./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc77dc-97b4-4a1c-855a-1cf3a1bf0982/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc77dc-97b4-4a1c-855a-1cf3a1bf0982/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc77dc-97b4-4a1c-855a-1cf3a1bf0982/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc77dc-97b4-4a1c-855a-1cf3a1bf0982/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc77dc-97b4-4a1c-855a-1cf3a1bf0982/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc77dc-97b4-4a1c-855a-1cf3a1bf0982/bin/utaipan-WLngWcDbfI --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 390f2eba6fdf8824b99921adcaaa6cdc728c2d2b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:21:34,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:21:34,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:21:34,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:21:34,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:21:34,873 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:21:34,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:21:34,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:21:34,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:21:34,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:21:34,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:21:34,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:21:34,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:21:34,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:21:34,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:21:34,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:21:34,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:21:34,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:21:34,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:21:34,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:21:34,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:21:34,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:21:34,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:21:34,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:21:34,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:21:34,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:21:34,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:21:34,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:21:34,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:21:34,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:21:34,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:21:34,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:21:34,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:21:34,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:21:34,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:21:34,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:21:34,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:21:34,958 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:21:34,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:21:34,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:21:34,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:21:34,961 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc77dc-97b4-4a1c-855a-1cf3a1bf0982/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:21:34,992 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:21:34,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:21:34,993 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:21:34,994 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:21:34,994 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:21:34,994 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:21:34,994 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:21:34,995 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:21:34,995 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:21:34,995 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:21:34,996 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:21:34,996 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:21:34,996 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:21:34,996 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:21:34,997 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:21:34,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:21:34,998 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:21:34,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:21:34,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:21:34,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:21:34,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:21:34,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:21:35,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:21:35,000 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:21:35,000 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:21:35,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:21:35,001 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:21:35,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:21:35,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:21:35,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:21:35,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:35,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:21:35,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:21:35,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:21:35,003 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:21:35,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:21:35,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:21:35,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:21:35,004 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:21:35,004 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_e9dc77dc-97b4-4a1c-855a-1cf3a1bf0982/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc77dc-97b4-4a1c-855a-1cf3a1bf0982/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 390f2eba6fdf8824b99921adcaaa6cdc728c2d2b [2021-10-11 02:21:35,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:21:35,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:21:35,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:21:35,366 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:21:35,367 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:21:35,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc77dc-97b4-4a1c-855a-1cf3a1bf0982/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c [2021-10-11 02:21:35,462 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc77dc-97b4-4a1c-855a-1cf3a1bf0982/bin/utaipan-WLngWcDbfI/data/b0f9bbde9/040aa2a4f4964679b7826612753bf8a1/FLAG35915c931 [2021-10-11 02:21:36,046 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:21:36,047 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc77dc-97b4-4a1c-855a-1cf3a1bf0982/sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c [2021-10-11 02:21:36,071 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc77dc-97b4-4a1c-855a-1cf3a1bf0982/bin/utaipan-WLngWcDbfI/data/b0f9bbde9/040aa2a4f4964679b7826612753bf8a1/FLAG35915c931 [2021-10-11 02:21:36,346 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc77dc-97b4-4a1c-855a-1cf3a1bf0982/bin/utaipan-WLngWcDbfI/data/b0f9bbde9/040aa2a4f4964679b7826612753bf8a1 [2021-10-11 02:21:36,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:21:36,353 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:21:36,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:36,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:21:36,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:21:36,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:36" (1/1) ... [2021-10-11 02:21:36,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@767f2f82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:36, skipping insertion in model container [2021-10-11 02:21:36,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:36" (1/1) ... [2021-10-11 02:21:36,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:21:36,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:21:36,817 WARN L226 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_e9dc77dc-97b4-4a1c-855a-1cf3a1bf0982/sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c[44554,44567] [2021-10-11 02:21:36,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:36,850 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:21:36,922 WARN L226 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_e9dc77dc-97b4-4a1c-855a-1cf3a1bf0982/sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c[44554,44567] [2021-10-11 02:21:36,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:36,945 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:21:36,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:36 WrapperNode [2021-10-11 02:21:36,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:36,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:36,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:21:36,948 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:21:36,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:36" (1/1) ... [2021-10-11 02:21:36,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:36" (1/1) ... [2021-10-11 02:21:37,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:37,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:21:37,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:21:37,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:21:37,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:36" (1/1) ... [2021-10-11 02:21:37,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:36" (1/1) ... [2021-10-11 02:21:37,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:36" (1/1) ... [2021-10-11 02:21:37,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:36" (1/1) ... [2021-10-11 02:21:37,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:36" (1/1) ... [2021-10-11 02:21:37,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:36" (1/1) ... [2021-10-11 02:21:37,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:36" (1/1) ... [2021-10-11 02:21:37,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:21:37,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:21:37,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:21:37,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:21:37,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:36" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc77dc-97b4-4a1c-855a-1cf3a1bf0982/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:37,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:21:37,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:21:37,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:21:37,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:21:37,387 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-11 02:21:38,185 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-11 02:21:38,185 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-11 02:21:38,578 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:21:38,578 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:21:38,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:38 BoogieIcfgContainer [2021-10-11 02:21:38,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:21:38,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:21:38,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:21:38,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:21:38,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:21:36" (1/3) ... [2021-10-11 02:21:38,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38452a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:38, skipping insertion in model container [2021-10-11 02:21:38,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:36" (2/3) ... [2021-10-11 02:21:38,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38452a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:38, skipping insertion in model container [2021-10-11 02:21:38,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:38" (3/3) ... [2021-10-11 02:21:38,590 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_13.cil.c [2021-10-11 02:21:38,608 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:21:38,612 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:21:38,623 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:21:38,655 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:21:38,655 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:21:38,655 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:21:38,656 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:21:38,656 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:21:38,656 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:21:38,656 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:21:38,656 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:21:38,677 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states. [2021-10-11 02:21:38,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 02:21:38,684 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:38,685 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:38,686 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:38,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:38,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1413221121, now seen corresponding path program 1 times [2021-10-11 02:21:38,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:38,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025264001] [2021-10-11 02:21:38,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:38,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:39,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:39,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025264001] [2021-10-11 02:21:39,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:39,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:39,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944056887] [2021-10-11 02:21:39,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:39,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:39,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:39,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:39,079 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 3 states. [2021-10-11 02:21:39,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:39,385 INFO L93 Difference]: Finished difference Result 247 states and 429 transitions. [2021-10-11 02:21:39,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:39,388 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2021-10-11 02:21:39,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:39,416 INFO L225 Difference]: With dead ends: 247 [2021-10-11 02:21:39,417 INFO L226 Difference]: Without dead ends: 129 [2021-10-11 02:21:39,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:39,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-11 02:21:39,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-10-11 02:21:39,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2021-10-11 02:21:39,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 194 transitions. [2021-10-11 02:21:39,509 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 194 transitions. Word has length 19 [2021-10-11 02:21:39,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:39,510 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 194 transitions. [2021-10-11 02:21:39,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:39,510 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 194 transitions. [2021-10-11 02:21:39,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 02:21:39,512 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:39,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:39,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:21:39,513 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:39,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:39,516 INFO L82 PathProgramCache]: Analyzing trace with hash 651610638, now seen corresponding path program 1 times [2021-10-11 02:21:39,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:39,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474275095] [2021-10-11 02:21:39,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:39,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:39,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474275095] [2021-10-11 02:21:39,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:39,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:39,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649938177] [2021-10-11 02:21:39,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:39,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:39,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:39,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:39,648 INFO L87 Difference]: Start difference. First operand 129 states and 194 transitions. Second operand 3 states. [2021-10-11 02:21:39,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:39,837 INFO L93 Difference]: Finished difference Result 265 states and 397 transitions. [2021-10-11 02:21:39,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:39,838 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-10-11 02:21:39,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:39,845 INFO L225 Difference]: With dead ends: 265 [2021-10-11 02:21:39,845 INFO L226 Difference]: Without dead ends: 138 [2021-10-11 02:21:39,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:39,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-11 02:21:39,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 130. [2021-10-11 02:21:39,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2021-10-11 02:21:39,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 195 transitions. [2021-10-11 02:21:39,874 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 195 transitions. Word has length 21 [2021-10-11 02:21:39,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:39,874 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 195 transitions. [2021-10-11 02:21:39,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:39,875 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 195 transitions. [2021-10-11 02:21:39,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 02:21:39,879 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:39,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:39,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:21:39,881 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:39,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:39,885 INFO L82 PathProgramCache]: Analyzing trace with hash 2002460673, now seen corresponding path program 1 times [2021-10-11 02:21:39,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:39,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864165720] [2021-10-11 02:21:39,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:40,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:40,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864165720] [2021-10-11 02:21:40,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:40,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:40,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199014293] [2021-10-11 02:21:40,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:40,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:40,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:40,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:40,012 INFO L87 Difference]: Start difference. First operand 130 states and 195 transitions. Second operand 3 states. [2021-10-11 02:21:40,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:40,196 INFO L93 Difference]: Finished difference Result 276 states and 415 transitions. [2021-10-11 02:21:40,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:40,197 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-10-11 02:21:40,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:40,199 INFO L225 Difference]: With dead ends: 276 [2021-10-11 02:21:40,200 INFO L226 Difference]: Without dead ends: 148 [2021-10-11 02:21:40,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:40,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-11 02:21:40,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2021-10-11 02:21:40,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2021-10-11 02:21:40,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 219 transitions. [2021-10-11 02:21:40,240 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 219 transitions. Word has length 21 [2021-10-11 02:21:40,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:40,240 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 219 transitions. [2021-10-11 02:21:40,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:40,241 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 219 transitions. [2021-10-11 02:21:40,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 02:21:40,242 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:40,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:40,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:21:40,243 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:40,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:40,243 INFO L82 PathProgramCache]: Analyzing trace with hash 308589360, now seen corresponding path program 1 times [2021-10-11 02:21:40,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:40,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58685007] [2021-10-11 02:21:40,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:40,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:40,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58685007] [2021-10-11 02:21:40,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:40,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:40,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665515174] [2021-10-11 02:21:40,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:40,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:40,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:40,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:40,341 INFO L87 Difference]: Start difference. First operand 146 states and 219 transitions. Second operand 3 states. [2021-10-11 02:21:40,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:40,503 INFO L93 Difference]: Finished difference Result 296 states and 448 transitions. [2021-10-11 02:21:40,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:40,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-10-11 02:21:40,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:40,506 INFO L225 Difference]: With dead ends: 296 [2021-10-11 02:21:40,507 INFO L226 Difference]: Without dead ends: 152 [2021-10-11 02:21:40,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:40,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-11 02:21:40,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-10-11 02:21:40,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2021-10-11 02:21:40,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 230 transitions. [2021-10-11 02:21:40,529 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 230 transitions. Word has length 21 [2021-10-11 02:21:40,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:40,529 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 230 transitions. [2021-10-11 02:21:40,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:40,530 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 230 transitions. [2021-10-11 02:21:40,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 02:21:40,539 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:40,539 INFO L422 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] [2021-10-11 02:21:40,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:21:40,539 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:40,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:40,542 INFO L82 PathProgramCache]: Analyzing trace with hash -617188369, now seen corresponding path program 1 times [2021-10-11 02:21:40,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:40,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656615727] [2021-10-11 02:21:40,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:40,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:40,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656615727] [2021-10-11 02:21:40,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:40,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:40,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265812823] [2021-10-11 02:21:40,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:40,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:40,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:40,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:40,623 INFO L87 Difference]: Start difference. First operand 152 states and 230 transitions. Second operand 3 states. [2021-10-11 02:21:40,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:40,803 INFO L93 Difference]: Finished difference Result 310 states and 467 transitions. [2021-10-11 02:21:40,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:40,804 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-10-11 02:21:40,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:40,806 INFO L225 Difference]: With dead ends: 310 [2021-10-11 02:21:40,806 INFO L226 Difference]: Without dead ends: 160 [2021-10-11 02:21:40,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:40,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-11 02:21:40,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 152. [2021-10-11 02:21:40,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2021-10-11 02:21:40,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 228 transitions. [2021-10-11 02:21:40,816 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 228 transitions. Word has length 22 [2021-10-11 02:21:40,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:40,817 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 228 transitions. [2021-10-11 02:21:40,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:40,817 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 228 transitions. [2021-10-11 02:21:40,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 02:21:40,818 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:40,819 INFO L422 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] [2021-10-11 02:21:40,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:21:40,819 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:40,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:40,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1723941666, now seen corresponding path program 1 times [2021-10-11 02:21:40,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:40,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334620522] [2021-10-11 02:21:40,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:40,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:40,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334620522] [2021-10-11 02:21:40,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:40,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:40,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900498198] [2021-10-11 02:21:40,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:40,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:40,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:40,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:40,860 INFO L87 Difference]: Start difference. First operand 152 states and 228 transitions. Second operand 3 states. [2021-10-11 02:21:41,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:41,045 INFO L93 Difference]: Finished difference Result 304 states and 456 transitions. [2021-10-11 02:21:41,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:41,046 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-10-11 02:21:41,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:41,047 INFO L225 Difference]: With dead ends: 304 [2021-10-11 02:21:41,048 INFO L226 Difference]: Without dead ends: 154 [2021-10-11 02:21:41,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:41,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-11 02:21:41,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2021-10-11 02:21:41,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2021-10-11 02:21:41,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 227 transitions. [2021-10-11 02:21:41,058 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 227 transitions. Word has length 22 [2021-10-11 02:21:41,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:41,059 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 227 transitions. [2021-10-11 02:21:41,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:41,059 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 227 transitions. [2021-10-11 02:21:41,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 02:21:41,060 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:41,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:41,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:21:41,061 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:41,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:41,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1176329267, now seen corresponding path program 1 times [2021-10-11 02:21:41,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:41,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083164822] [2021-10-11 02:21:41,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:41,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:41,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083164822] [2021-10-11 02:21:41,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:41,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:41,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956479324] [2021-10-11 02:21:41,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:41,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:41,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:41,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:41,098 INFO L87 Difference]: Start difference. First operand 152 states and 227 transitions. Second operand 3 states. [2021-10-11 02:21:41,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:41,281 INFO L93 Difference]: Finished difference Result 310 states and 461 transitions. [2021-10-11 02:21:41,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:41,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2021-10-11 02:21:41,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:41,284 INFO L225 Difference]: With dead ends: 310 [2021-10-11 02:21:41,284 INFO L226 Difference]: Without dead ends: 160 [2021-10-11 02:21:41,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:41,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-11 02:21:41,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 152. [2021-10-11 02:21:41,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2021-10-11 02:21:41,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 225 transitions. [2021-10-11 02:21:41,296 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 225 transitions. Word has length 23 [2021-10-11 02:21:41,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:41,297 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 225 transitions. [2021-10-11 02:21:41,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:41,297 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 225 transitions. [2021-10-11 02:21:41,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-11 02:21:41,298 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:41,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:41,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:21:41,299 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:41,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:41,300 INFO L82 PathProgramCache]: Analyzing trace with hash -882584972, now seen corresponding path program 1 times [2021-10-11 02:21:41,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:41,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749403479] [2021-10-11 02:21:41,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:41,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:41,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749403479] [2021-10-11 02:21:41,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:41,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:41,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167006398] [2021-10-11 02:21:41,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:41,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:41,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:41,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:41,338 INFO L87 Difference]: Start difference. First operand 152 states and 225 transitions. Second operand 3 states. [2021-10-11 02:21:41,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:41,519 INFO L93 Difference]: Finished difference Result 310 states and 457 transitions. [2021-10-11 02:21:41,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:41,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2021-10-11 02:21:41,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:41,522 INFO L225 Difference]: With dead ends: 310 [2021-10-11 02:21:41,522 INFO L226 Difference]: Without dead ends: 160 [2021-10-11 02:21:41,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:41,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-11 02:21:41,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 152. [2021-10-11 02:21:41,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2021-10-11 02:21:41,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 223 transitions. [2021-10-11 02:21:41,532 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 223 transitions. Word has length 24 [2021-10-11 02:21:41,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:41,532 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 223 transitions. [2021-10-11 02:21:41,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:41,532 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 223 transitions. [2021-10-11 02:21:41,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-11 02:21:41,533 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:41,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:41,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:21:41,534 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:41,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:41,534 INFO L82 PathProgramCache]: Analyzing trace with hash 505722867, now seen corresponding path program 1 times [2021-10-11 02:21:41,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:41,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076363852] [2021-10-11 02:21:41,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:41,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:41,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076363852] [2021-10-11 02:21:41,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:41,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:41,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459860417] [2021-10-11 02:21:41,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:41,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:41,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:41,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:41,582 INFO L87 Difference]: Start difference. First operand 152 states and 223 transitions. Second operand 4 states. [2021-10-11 02:21:41,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:41,912 INFO L93 Difference]: Finished difference Result 441 states and 647 transitions. [2021-10-11 02:21:41,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:21:41,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2021-10-11 02:21:41,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:41,915 INFO L225 Difference]: With dead ends: 441 [2021-10-11 02:21:41,915 INFO L226 Difference]: Without dead ends: 291 [2021-10-11 02:21:41,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:21:41,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-10-11 02:21:41,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 259. [2021-10-11 02:21:41,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2021-10-11 02:21:41,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 381 transitions. [2021-10-11 02:21:41,933 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 381 transitions. Word has length 24 [2021-10-11 02:21:41,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:41,934 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 381 transitions. [2021-10-11 02:21:41,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:41,934 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 381 transitions. [2021-10-11 02:21:41,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-11 02:21:41,935 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:41,935 INFO L422 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] [2021-10-11 02:21:41,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:21:41,936 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:41,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:41,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1845369516, now seen corresponding path program 1 times [2021-10-11 02:21:41,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:41,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39177305] [2021-10-11 02:21:41,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:41,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:41,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39177305] [2021-10-11 02:21:41,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:41,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:41,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093917373] [2021-10-11 02:21:41,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:41,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:41,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:41,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:41,977 INFO L87 Difference]: Start difference. First operand 259 states and 381 transitions. Second operand 3 states. [2021-10-11 02:21:42,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:42,173 INFO L93 Difference]: Finished difference Result 591 states and 881 transitions. [2021-10-11 02:21:42,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:42,174 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2021-10-11 02:21:42,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:42,177 INFO L225 Difference]: With dead ends: 591 [2021-10-11 02:21:42,178 INFO L226 Difference]: Without dead ends: 334 [2021-10-11 02:21:42,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:42,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-10-11 02:21:42,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 314. [2021-10-11 02:21:42,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2021-10-11 02:21:42,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 466 transitions. [2021-10-11 02:21:42,199 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 466 transitions. Word has length 28 [2021-10-11 02:21:42,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:42,200 INFO L481 AbstractCegarLoop]: Abstraction has 314 states and 466 transitions. [2021-10-11 02:21:42,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:42,200 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 466 transitions. [2021-10-11 02:21:42,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-11 02:21:42,201 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:42,201 INFO L422 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] [2021-10-11 02:21:42,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:21:42,202 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:42,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:42,203 INFO L82 PathProgramCache]: Analyzing trace with hash 396459179, now seen corresponding path program 1 times [2021-10-11 02:21:42,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:42,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132548202] [2021-10-11 02:21:42,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:42,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:42,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132548202] [2021-10-11 02:21:42,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:42,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:42,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476304921] [2021-10-11 02:21:42,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:42,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:42,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:42,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:42,238 INFO L87 Difference]: Start difference. First operand 314 states and 466 transitions. Second operand 3 states. [2021-10-11 02:21:42,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:42,449 INFO L93 Difference]: Finished difference Result 648 states and 967 transitions. [2021-10-11 02:21:42,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:42,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2021-10-11 02:21:42,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:42,453 INFO L225 Difference]: With dead ends: 648 [2021-10-11 02:21:42,453 INFO L226 Difference]: Without dead ends: 336 [2021-10-11 02:21:42,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:42,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-10-11 02:21:42,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 325. [2021-10-11 02:21:42,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2021-10-11 02:21:42,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 485 transitions. [2021-10-11 02:21:42,496 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 485 transitions. Word has length 29 [2021-10-11 02:21:42,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:42,497 INFO L481 AbstractCegarLoop]: Abstraction has 325 states and 485 transitions. [2021-10-11 02:21:42,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:42,497 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 485 transitions. [2021-10-11 02:21:42,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-11 02:21:42,498 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:42,499 INFO L422 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, 1, 1, 1, 1, 1] [2021-10-11 02:21:42,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 02:21:42,499 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:42,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:42,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1785662215, now seen corresponding path program 1 times [2021-10-11 02:21:42,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:42,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102444724] [2021-10-11 02:21:42,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:42,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:42,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102444724] [2021-10-11 02:21:42,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:42,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:42,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641182992] [2021-10-11 02:21:42,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:42,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:42,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:42,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:42,537 INFO L87 Difference]: Start difference. First operand 325 states and 485 transitions. Second operand 3 states. [2021-10-11 02:21:42,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:42,784 INFO L93 Difference]: Finished difference Result 709 states and 1064 transitions. [2021-10-11 02:21:42,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:42,785 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2021-10-11 02:21:42,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:42,789 INFO L225 Difference]: With dead ends: 709 [2021-10-11 02:21:42,789 INFO L226 Difference]: Without dead ends: 386 [2021-10-11 02:21:42,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:42,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-10-11 02:21:42,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 378. [2021-10-11 02:21:42,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2021-10-11 02:21:42,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 570 transitions. [2021-10-11 02:21:42,813 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 570 transitions. Word has length 35 [2021-10-11 02:21:42,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:42,814 INFO L481 AbstractCegarLoop]: Abstraction has 378 states and 570 transitions. [2021-10-11 02:21:42,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:42,814 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 570 transitions. [2021-10-11 02:21:42,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-11 02:21:42,815 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:42,816 INFO L422 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, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:42,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-11 02:21:42,816 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:42,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:42,817 INFO L82 PathProgramCache]: Analyzing trace with hash -486054621, now seen corresponding path program 1 times [2021-10-11 02:21:42,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:42,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331656553] [2021-10-11 02:21:42,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:42,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:42,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331656553] [2021-10-11 02:21:42,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:42,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:42,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27043775] [2021-10-11 02:21:42,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:42,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:42,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:42,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:42,862 INFO L87 Difference]: Start difference. First operand 378 states and 570 transitions. Second operand 3 states. [2021-10-11 02:21:43,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:43,104 INFO L93 Difference]: Finished difference Result 760 states and 1145 transitions. [2021-10-11 02:21:43,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:43,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2021-10-11 02:21:43,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:43,108 INFO L225 Difference]: With dead ends: 760 [2021-10-11 02:21:43,108 INFO L226 Difference]: Without dead ends: 384 [2021-10-11 02:21:43,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:43,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-10-11 02:21:43,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 379. [2021-10-11 02:21:43,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2021-10-11 02:21:43,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 570 transitions. [2021-10-11 02:21:43,153 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 570 transitions. Word has length 36 [2021-10-11 02:21:43,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:43,154 INFO L481 AbstractCegarLoop]: Abstraction has 379 states and 570 transitions. [2021-10-11 02:21:43,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:43,154 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 570 transitions. [2021-10-11 02:21:43,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-11 02:21:43,155 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:43,156 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:43,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-11 02:21:43,156 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:43,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:43,157 INFO L82 PathProgramCache]: Analyzing trace with hash 501846159, now seen corresponding path program 1 times [2021-10-11 02:21:43,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:43,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590772431] [2021-10-11 02:21:43,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:43,215 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:43,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590772431] [2021-10-11 02:21:43,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:43,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:43,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456978336] [2021-10-11 02:21:43,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:43,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:43,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:43,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:43,218 INFO L87 Difference]: Start difference. First operand 379 states and 570 transitions. Second operand 3 states. [2021-10-11 02:21:43,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:43,435 INFO L93 Difference]: Finished difference Result 752 states and 1132 transitions. [2021-10-11 02:21:43,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:43,436 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2021-10-11 02:21:43,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:43,439 INFO L225 Difference]: With dead ends: 752 [2021-10-11 02:21:43,440 INFO L226 Difference]: Without dead ends: 375 [2021-10-11 02:21:43,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:43,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-10-11 02:21:43,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 365. [2021-10-11 02:21:43,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2021-10-11 02:21:43,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 544 transitions. [2021-10-11 02:21:43,463 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 544 transitions. Word has length 54 [2021-10-11 02:21:43,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:43,464 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 544 transitions. [2021-10-11 02:21:43,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:43,464 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 544 transitions. [2021-10-11 02:21:43,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-11 02:21:43,466 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:43,466 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:43,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-11 02:21:43,466 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:43,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:43,467 INFO L82 PathProgramCache]: Analyzing trace with hash -943857641, now seen corresponding path program 1 times [2021-10-11 02:21:43,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:43,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984202539] [2021-10-11 02:21:43,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:43,504 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:21:43,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984202539] [2021-10-11 02:21:43,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:43,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:43,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528183237] [2021-10-11 02:21:43,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:43,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:43,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:43,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:43,507 INFO L87 Difference]: Start difference. First operand 365 states and 544 transitions. Second operand 3 states. [2021-10-11 02:21:43,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:43,699 INFO L93 Difference]: Finished difference Result 764 states and 1136 transitions. [2021-10-11 02:21:43,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:43,700 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2021-10-11 02:21:43,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:43,703 INFO L225 Difference]: With dead ends: 764 [2021-10-11 02:21:43,703 INFO L226 Difference]: Without dead ends: 401 [2021-10-11 02:21:43,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:43,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-10-11 02:21:43,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 393. [2021-10-11 02:21:43,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2021-10-11 02:21:43,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 580 transitions. [2021-10-11 02:21:43,726 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 580 transitions. Word has length 55 [2021-10-11 02:21:43,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:43,726 INFO L481 AbstractCegarLoop]: Abstraction has 393 states and 580 transitions. [2021-10-11 02:21:43,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:43,746 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 580 transitions. [2021-10-11 02:21:43,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-11 02:21:43,747 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:43,748 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:43,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-11 02:21:43,748 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:43,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:43,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1277153928, now seen corresponding path program 1 times [2021-10-11 02:21:43,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:43,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459996783] [2021-10-11 02:21:43,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:43,809 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:21:43,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459996783] [2021-10-11 02:21:43,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:43,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:43,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467857035] [2021-10-11 02:21:43,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:43,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:43,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:43,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:43,815 INFO L87 Difference]: Start difference. First operand 393 states and 580 transitions. Second operand 3 states. [2021-10-11 02:21:44,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:44,045 INFO L93 Difference]: Finished difference Result 788 states and 1163 transitions. [2021-10-11 02:21:44,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:44,046 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2021-10-11 02:21:44,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:44,050 INFO L225 Difference]: With dead ends: 788 [2021-10-11 02:21:44,051 INFO L226 Difference]: Without dead ends: 397 [2021-10-11 02:21:44,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:44,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-10-11 02:21:44,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 393. [2021-10-11 02:21:44,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2021-10-11 02:21:44,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 576 transitions. [2021-10-11 02:21:44,077 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 576 transitions. Word has length 56 [2021-10-11 02:21:44,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:44,078 INFO L481 AbstractCegarLoop]: Abstraction has 393 states and 576 transitions. [2021-10-11 02:21:44,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:44,078 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 576 transitions. [2021-10-11 02:21:44,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-11 02:21:44,079 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:44,080 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:44,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-11 02:21:44,080 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:44,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:44,081 INFO L82 PathProgramCache]: Analyzing trace with hash -589018603, now seen corresponding path program 1 times [2021-10-11 02:21:44,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:44,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530050090] [2021-10-11 02:21:44,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:44,131 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:44,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530050090] [2021-10-11 02:21:44,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:44,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:44,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91291722] [2021-10-11 02:21:44,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:44,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:44,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:44,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:44,134 INFO L87 Difference]: Start difference. First operand 393 states and 576 transitions. Second operand 3 states. [2021-10-11 02:21:44,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:44,368 INFO L93 Difference]: Finished difference Result 820 states and 1200 transitions. [2021-10-11 02:21:44,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:44,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2021-10-11 02:21:44,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:44,372 INFO L225 Difference]: With dead ends: 820 [2021-10-11 02:21:44,373 INFO L226 Difference]: Without dead ends: 429 [2021-10-11 02:21:44,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:44,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-10-11 02:21:44,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2021-10-11 02:21:44,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2021-10-11 02:21:44,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 623 transitions. [2021-10-11 02:21:44,399 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 623 transitions. Word has length 56 [2021-10-11 02:21:44,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:44,399 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 623 transitions. [2021-10-11 02:21:44,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:44,399 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 623 transitions. [2021-10-11 02:21:44,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-11 02:21:44,401 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:44,401 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:44,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-11 02:21:44,401 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:44,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:44,402 INFO L82 PathProgramCache]: Analyzing trace with hash 2065178124, now seen corresponding path program 1 times [2021-10-11 02:21:44,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:44,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912217631] [2021-10-11 02:21:44,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:44,435 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:44,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912217631] [2021-10-11 02:21:44,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:44,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:44,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741883573] [2021-10-11 02:21:44,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:44,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:44,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:44,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:44,438 INFO L87 Difference]: Start difference. First operand 429 states and 623 transitions. Second operand 3 states. [2021-10-11 02:21:44,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:44,666 INFO L93 Difference]: Finished difference Result 901 states and 1307 transitions. [2021-10-11 02:21:44,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:44,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2021-10-11 02:21:44,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:44,670 INFO L225 Difference]: With dead ends: 901 [2021-10-11 02:21:44,670 INFO L226 Difference]: Without dead ends: 474 [2021-10-11 02:21:44,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:44,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-10-11 02:21:44,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 470. [2021-10-11 02:21:44,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2021-10-11 02:21:44,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 679 transitions. [2021-10-11 02:21:44,697 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 679 transitions. Word has length 68 [2021-10-11 02:21:44,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:44,698 INFO L481 AbstractCegarLoop]: Abstraction has 470 states and 679 transitions. [2021-10-11 02:21:44,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:44,698 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 679 transitions. [2021-10-11 02:21:44,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-11 02:21:44,699 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:44,699 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:44,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-11 02:21:44,700 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:44,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:44,700 INFO L82 PathProgramCache]: Analyzing trace with hash 117982928, now seen corresponding path program 1 times [2021-10-11 02:21:44,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:44,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853566464] [2021-10-11 02:21:44,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:44,732 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:44,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853566464] [2021-10-11 02:21:44,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:44,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:44,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978675799] [2021-10-11 02:21:44,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:44,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:44,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:44,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:44,735 INFO L87 Difference]: Start difference. First operand 470 states and 679 transitions. Second operand 3 states. [2021-10-11 02:21:44,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:44,934 INFO L93 Difference]: Finished difference Result 940 states and 1358 transitions. [2021-10-11 02:21:44,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:44,935 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2021-10-11 02:21:44,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:44,938 INFO L225 Difference]: With dead ends: 940 [2021-10-11 02:21:44,938 INFO L226 Difference]: Without dead ends: 472 [2021-10-11 02:21:44,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:44,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-10-11 02:21:44,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 470. [2021-10-11 02:21:44,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2021-10-11 02:21:44,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 676 transitions. [2021-10-11 02:21:44,965 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 676 transitions. Word has length 69 [2021-10-11 02:21:44,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:44,965 INFO L481 AbstractCegarLoop]: Abstraction has 470 states and 676 transitions. [2021-10-11 02:21:44,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:44,965 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 676 transitions. [2021-10-11 02:21:44,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-10-11 02:21:44,966 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:44,967 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:21:44,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-11 02:21:44,967 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:44,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:44,968 INFO L82 PathProgramCache]: Analyzing trace with hash 69292448, now seen corresponding path program 1 times [2021-10-11 02:21:44,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:44,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098470187] [2021-10-11 02:21:44,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:44,995 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-11 02:21:44,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098470187] [2021-10-11 02:21:44,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:44,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:44,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452861132] [2021-10-11 02:21:44,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:44,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:44,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:44,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:44,997 INFO L87 Difference]: Start difference. First operand 470 states and 676 transitions. Second operand 3 states. [2021-10-11 02:21:45,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:45,162 INFO L93 Difference]: Finished difference Result 968 states and 1390 transitions. [2021-10-11 02:21:45,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:45,163 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2021-10-11 02:21:45,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:45,166 INFO L225 Difference]: With dead ends: 968 [2021-10-11 02:21:45,166 INFO L226 Difference]: Without dead ends: 500 [2021-10-11 02:21:45,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:45,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-10-11 02:21:45,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 496. [2021-10-11 02:21:45,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2021-10-11 02:21:45,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 705 transitions. [2021-10-11 02:21:45,193 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 705 transitions. Word has length 73 [2021-10-11 02:21:45,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:45,193 INFO L481 AbstractCegarLoop]: Abstraction has 496 states and 705 transitions. [2021-10-11 02:21:45,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:45,194 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 705 transitions. [2021-10-11 02:21:45,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-11 02:21:45,195 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:45,195 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:45,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-11 02:21:45,195 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:45,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:45,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1674328031, now seen corresponding path program 1 times [2021-10-11 02:21:45,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:45,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329717269] [2021-10-11 02:21:45,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:45,223 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-11 02:21:45,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329717269] [2021-10-11 02:21:45,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:45,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:45,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118526013] [2021-10-11 02:21:45,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:45,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:45,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:45,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:45,225 INFO L87 Difference]: Start difference. First operand 496 states and 705 transitions. Second operand 3 states. [2021-10-11 02:21:45,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:45,417 INFO L93 Difference]: Finished difference Result 992 states and 1410 transitions. [2021-10-11 02:21:45,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:45,417 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2021-10-11 02:21:45,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:45,421 INFO L225 Difference]: With dead ends: 992 [2021-10-11 02:21:45,421 INFO L226 Difference]: Without dead ends: 498 [2021-10-11 02:21:45,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:45,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2021-10-11 02:21:45,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 496. [2021-10-11 02:21:45,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2021-10-11 02:21:45,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 698 transitions. [2021-10-11 02:21:45,452 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 698 transitions. Word has length 74 [2021-10-11 02:21:45,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:45,453 INFO L481 AbstractCegarLoop]: Abstraction has 496 states and 698 transitions. [2021-10-11 02:21:45,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:45,453 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 698 transitions. [2021-10-11 02:21:45,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-10-11 02:21:45,454 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:45,455 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:45,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-11 02:21:45,455 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:45,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:45,456 INFO L82 PathProgramCache]: Analyzing trace with hash 2146679968, now seen corresponding path program 1 times [2021-10-11 02:21:45,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:45,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666116439] [2021-10-11 02:21:45,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:45,497 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-11 02:21:45,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666116439] [2021-10-11 02:21:45,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:45,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:45,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283436310] [2021-10-11 02:21:45,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:45,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:45,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:45,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:45,499 INFO L87 Difference]: Start difference. First operand 496 states and 698 transitions. Second operand 3 states. [2021-10-11 02:21:45,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:45,696 INFO L93 Difference]: Finished difference Result 1028 states and 1442 transitions. [2021-10-11 02:21:45,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:45,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2021-10-11 02:21:45,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:45,700 INFO L225 Difference]: With dead ends: 1028 [2021-10-11 02:21:45,700 INFO L226 Difference]: Without dead ends: 534 [2021-10-11 02:21:45,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:45,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-10-11 02:21:45,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 530. [2021-10-11 02:21:45,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2021-10-11 02:21:45,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 737 transitions. [2021-10-11 02:21:45,729 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 737 transitions. Word has length 82 [2021-10-11 02:21:45,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:45,729 INFO L481 AbstractCegarLoop]: Abstraction has 530 states and 737 transitions. [2021-10-11 02:21:45,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:45,729 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 737 transitions. [2021-10-11 02:21:45,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-11 02:21:45,731 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:45,731 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:45,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-11 02:21:45,731 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:45,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:45,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1828428609, now seen corresponding path program 1 times [2021-10-11 02:21:45,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:45,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345917543] [2021-10-11 02:21:45,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:45,761 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-11 02:21:45,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345917543] [2021-10-11 02:21:45,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:45,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:45,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962625086] [2021-10-11 02:21:45,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:45,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:45,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:45,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:45,763 INFO L87 Difference]: Start difference. First operand 530 states and 737 transitions. Second operand 3 states. [2021-10-11 02:21:45,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:45,941 INFO L93 Difference]: Finished difference Result 1060 states and 1474 transitions. [2021-10-11 02:21:45,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:45,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2021-10-11 02:21:45,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:45,945 INFO L225 Difference]: With dead ends: 1060 [2021-10-11 02:21:45,945 INFO L226 Difference]: Without dead ends: 532 [2021-10-11 02:21:45,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:45,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-10-11 02:21:45,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 530. [2021-10-11 02:21:45,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2021-10-11 02:21:45,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 732 transitions. [2021-10-11 02:21:45,974 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 732 transitions. Word has length 83 [2021-10-11 02:21:45,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:45,975 INFO L481 AbstractCegarLoop]: Abstraction has 530 states and 732 transitions. [2021-10-11 02:21:45,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:45,975 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 732 transitions. [2021-10-11 02:21:45,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-11 02:21:45,976 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:45,976 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:45,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-11 02:21:45,977 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:45,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:45,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1636560132, now seen corresponding path program 1 times [2021-10-11 02:21:45,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:45,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646516663] [2021-10-11 02:21:45,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:21:46,015 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:21:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:21:46,047 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:21:46,107 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:21:46,108 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:21:46,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-11 02:21:46,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:21:46 BoogieIcfgContainer [2021-10-11 02:21:46,250 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:21:46,250 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:21:46,250 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:21:46,251 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:21:46,251 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:38" (3/4) ... [2021-10-11 02:21:46,253 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:21:46,344 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9dc77dc-97b4-4a1c-855a-1cf3a1bf0982/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:21:46,345 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:21:46,347 INFO L168 Benchmark]: Toolchain (without parser) took 9993.03 ms. Allocated memory was 88.1 MB in the beginning and 243.3 MB in the end (delta: 155.2 MB). Free memory was 53.6 MB in the beginning and 197.8 MB in the end (delta: -144.2 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:46,347 INFO L168 Benchmark]: CDTParser took 1.13 ms. Allocated memory is still 88.1 MB. Free memory was 60.6 MB in the beginning and 60.6 MB in the end (delta: 23.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:46,348 INFO L168 Benchmark]: CACSL2BoogieTranslator took 590.99 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 53.5 MB in the beginning and 79.0 MB in the end (delta: -25.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:46,348 INFO L168 Benchmark]: Boogie Procedure Inliner took 115.51 ms. Allocated memory is still 107.0 MB. Free memory was 79.0 MB in the beginning and 75.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:46,349 INFO L168 Benchmark]: Boogie Preprocessor took 45.42 ms. Allocated memory is still 107.0 MB. Free memory was 75.9 MB in the beginning and 73.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:46,349 INFO L168 Benchmark]: RCFGBuilder took 1470.75 ms. Allocated memory was 107.0 MB in the beginning and 138.4 MB in the end (delta: 31.5 MB). Free memory was 73.8 MB in the beginning and 95.6 MB in the end (delta: -21.8 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:46,350 INFO L168 Benchmark]: TraceAbstraction took 7667.13 ms. Allocated memory was 138.4 MB in the beginning and 243.3 MB in the end (delta: 104.9 MB). Free memory was 95.1 MB in the beginning and 210.4 MB in the end (delta: -115.3 MB). Peak memory consumption was 101.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:46,350 INFO L168 Benchmark]: Witness Printer took 94.57 ms. Allocated memory is still 243.3 MB. Free memory was 210.4 MB in the beginning and 197.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:46,353 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.13 ms. Allocated memory is still 88.1 MB. Free memory was 60.6 MB in the beginning and 60.6 MB in the end (delta: 23.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 590.99 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 53.5 MB in the beginning and 79.0 MB in the end (delta: -25.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 115.51 ms. Allocated memory is still 107.0 MB. Free memory was 79.0 MB in the beginning and 75.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.42 ms. Allocated memory is still 107.0 MB. Free memory was 75.9 MB in the beginning and 73.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1470.75 ms. Allocated memory was 107.0 MB in the beginning and 138.4 MB in the end (delta: 31.5 MB). Free memory was 73.8 MB in the beginning and 95.6 MB in the end (delta: -21.8 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7667.13 ms. Allocated memory was 138.4 MB in the beginning and 243.3 MB in the end (delta: 104.9 MB). Free memory was 95.1 MB in the beginning and 210.4 MB in the end (delta: -115.3 MB). Peak memory consumption was 101.0 MB. Max. memory is 16.1 GB. * Witness Printer took 94.57 ms. Allocated memory is still 243.3 MB. Free memory was 210.4 MB in the beginning and 197.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 644]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L649] int s ; [L650] int tmp ; [L654] s = 8464 [L13] int s__info_callback = __VERIFIER_nondet_int() ; [L14] int s__in_handshake = __VERIFIER_nondet_int() ; [L15] int s__state ; [L16] int s__new_session ; [L17] int s__server ; [L18] int s__version = __VERIFIER_nondet_int() ; [L19] int s__type ; [L20] int s__init_num ; [L21] int s__hit = __VERIFIER_nondet_int() ; [L22] int s__rwstate ; [L23] int s__init_buf___0 = 1; [L24] int s__debug = __VERIFIER_nondet_int() ; [L25] int s__shutdown ; [L26] int s__cert = __VERIFIER_nondet_int() ; [L27] int s__options = __VERIFIER_nondet_int() ; [L28] int s__verify_mode = __VERIFIER_nondet_int() ; [L29] int s__session__peer = __VERIFIER_nondet_int() ; [L30] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L31] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L33] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L34] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L35] int s__s3__tmp__cert_request ; [L36] int s__s3__tmp__reuse_message ; [L37] int s__s3__tmp__use_rsa_tmp ; [L38] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L39] int s__s3__tmp__new_cipher__algorithms ; [L40] int s__s3__tmp__next_state___0 ; [L41] int s__s3__tmp__new_cipher__algo_strength ; [L42] int s__session__cipher ; [L43] int buf ; [L44] unsigned long l ; [L45] unsigned long Time ; [L46] unsigned long tmp ; [L47] int cb ; [L48] long num1 = __VERIFIER_nondet_long() ; [L49] int ret ; [L50] int new_state ; [L51] int state ; [L52] int skip ; [L53] int got_new_session ; [L54] int tmp___1 = __VERIFIER_nondet_int() ; [L55] int tmp___2 = __VERIFIER_nondet_int() ; [L56] int tmp___3 = __VERIFIER_nondet_int() ; [L57] int tmp___4 = __VERIFIER_nondet_int() ; [L58] int tmp___5 = __VERIFIER_nondet_int() ; [L59] int tmp___6 = __VERIFIER_nondet_int() ; [L60] int tmp___7 = __VERIFIER_nondet_int() ; [L61] long tmp___8 = __VERIFIER_nondet_long() ; [L62] int tmp___9 = __VERIFIER_nondet_int() ; [L63] int tmp___10 = __VERIFIER_nondet_int() ; [L64] int blastFlag ; [L65] int __cil_tmp55 ; [L66] unsigned long __cil_tmp56 ; [L67] unsigned long __cil_tmp57 ; [L68] unsigned long __cil_tmp58 ; [L69] unsigned long __cil_tmp59 ; [L70] int __cil_tmp60 ; [L71] unsigned long __cil_tmp61 ; [L74] s__state = initial_state [L75] blastFlag = 0 [L76] tmp = __VERIFIER_nondet_int() [L77] Time = tmp [L78] cb = 0 [L79] ret = -1 [L80] skip = 0 [L81] got_new_session = 0 [L82] COND FALSE !(s__info_callback != 0) [L85] COND FALSE !(s__ctx__info_callback != 0) [L89] s__in_handshake ++ [L90] COND TRUE tmp___1 + 12288 [L91] COND FALSE !(tmp___2 + 16384) [L95] COND FALSE !(s__cert == 0) [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND TRUE s__state == 8464 [L272] s__shutdown = 0 [L273] ret = __VERIFIER_nondet_int() [L274] COND TRUE blastFlag == 0 [L275] blastFlag = 1 [L277] COND FALSE !(ret <= 0) [L280] got_new_session = 1 [L281] s__state = 8496 [L282] s__init_num = 0 [L601] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L602] COND FALSE !(! s__s3__tmp__reuse_message) [L633] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND TRUE s__state == 8496 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L290] COND FALSE !(ret <= 0) [L293] COND FALSE !(\read(s__hit)) [L296] s__state = 8512 [L298] s__init_num = 0 [L601] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L602] COND FALSE !(! s__s3__tmp__reuse_message) [L633] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND TRUE s__state == 8512 [L303] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L304] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L305] COND TRUE __cil_tmp56 + 256UL [L306] skip = 1 [L317] s__state = 8528 [L318] s__init_num = 0 [L601] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L602] COND FALSE !(! s__s3__tmp__reuse_message) [L633] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND TRUE s__state == 8528 [L322] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L323] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L325] __cil_tmp57 = (unsigned long )s__options [L326] COND TRUE __cil_tmp57 + 2097152UL [L327] s__s3__tmp__use_rsa_tmp = 1 [L332] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L359] ret = __VERIFIER_nondet_int() [L360] COND FALSE !(blastFlag == 6) [L363] COND FALSE !(ret <= 0) [L380] s__state = 8544 [L381] s__init_num = 0 [L601] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L602] COND TRUE ! s__s3__tmp__reuse_message [L603] COND TRUE ! skip [L604] COND TRUE state == 8528 [L605] COND TRUE s__state == 8544 [L606] COND TRUE tmp___7 != 1024 [L607] COND TRUE tmp___7 != 512 [L608] COND TRUE __cil_tmp58 != 4294967294 [L609] COND TRUE l != 4294967266 [L644] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 114 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.4s, OverallIterations: 24, TraceHistogramMax: 4, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2461 SDtfs, 3105 SDslu, 525 SDs, 0 SdLazy, 2013 SolverSat, 862 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=530occurred in iteration=22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 23 MinimizatonAttempts, 152 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 1083 NumberOfCodeBlocks, 1083 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 972 ConstructedInterpolants, 0 QuantifiedInterpolants, 108490 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 23 PerfectInterpolantSequences, 352/352 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...