./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label21.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_00c7b391-ce1a-4a35-91cd-10f302597db6/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c7b391-ce1a-4a35-91cd-10f302597db6/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_00c7b391-ce1a-4a35-91cd-10f302597db6/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c7b391-ce1a-4a35-91cd-10f302597db6/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label21.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c7b391-ce1a-4a35-91cd-10f302597db6/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_00c7b391-ce1a-4a35-91cd-10f302597db6/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 e28adbc418ee4960546fd54a6ea808ccba29f67f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:21:33,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:21:33,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:21:33,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:21:33,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:21:33,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:21:33,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:21:33,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:21:33,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:21:33,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:21:33,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:21:33,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:21:33,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:21:33,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:21:33,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:21:33,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:21:34,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:21:34,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:21:34,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:21:34,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:21:34,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:21:34,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:21:34,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:21:34,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:21:34,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:21:34,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:21:34,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:21:34,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:21:34,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:21:34,020 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:21:34,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:21:34,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:21:34,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:21:34,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:21:34,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:21:34,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:21:34,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:21:34,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:21:34,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:21:34,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:21:34,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:21:34,031 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c7b391-ce1a-4a35-91cd-10f302597db6/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:21:34,084 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:21:34,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:21:34,085 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:21:34,086 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:21:34,086 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:21:34,087 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:21:34,087 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:21:34,087 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:21:34,087 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:21:34,088 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:21:34,089 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:21:34,089 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:21:34,090 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:21:34,090 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:21:34,090 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:21:34,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:21:34,091 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:21:34,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:21:34,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:21:34,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:21:34,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:21:34,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:21:34,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:21:34,093 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:21:34,093 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:21:34,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:21:34,094 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:21:34,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:21:34,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:21:34,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:21:34,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:34,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:21:34,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:21:34,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:21:34,098 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:21:34,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:21:34,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:21:34,099 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:21:34,099 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:21:34,099 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_00c7b391-ce1a-4a35-91cd-10f302597db6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c7b391-ce1a-4a35-91cd-10f302597db6/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e28adbc418ee4960546fd54a6ea808ccba29f67f [2021-10-11 02:21:34,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:21:34,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:21:34,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:21:34,441 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:21:34,441 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:21:34,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c7b391-ce1a-4a35-91cd-10f302597db6/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem02_label21.c [2021-10-11 02:21:34,515 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c7b391-ce1a-4a35-91cd-10f302597db6/bin/utaipan-WLngWcDbfI/data/46eccc37f/7a8bb7006a3b496381c309340d5a21f1/FLAGb89f4b7d1 [2021-10-11 02:21:35,123 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:21:35,124 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c7b391-ce1a-4a35-91cd-10f302597db6/sv-benchmarks/c/eca-rers2012/Problem02_label21.c [2021-10-11 02:21:35,137 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c7b391-ce1a-4a35-91cd-10f302597db6/bin/utaipan-WLngWcDbfI/data/46eccc37f/7a8bb7006a3b496381c309340d5a21f1/FLAGb89f4b7d1 [2021-10-11 02:21:35,352 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c7b391-ce1a-4a35-91cd-10f302597db6/bin/utaipan-WLngWcDbfI/data/46eccc37f/7a8bb7006a3b496381c309340d5a21f1 [2021-10-11 02:21:35,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:21:35,357 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:21:35,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:35,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:21:35,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:21:35,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:35" (1/1) ... [2021-10-11 02:21:35,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a6cc2ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:35, skipping insertion in model container [2021-10-11 02:21:35,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:35" (1/1) ... [2021-10-11 02:21:35,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:21:35,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:21:35,823 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_00c7b391-ce1a-4a35-91cd-10f302597db6/sv-benchmarks/c/eca-rers2012/Problem02_label21.c[16331,16344] [2021-10-11 02:21:35,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:35,905 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:21:36,046 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_00c7b391-ce1a-4a35-91cd-10f302597db6/sv-benchmarks/c/eca-rers2012/Problem02_label21.c[16331,16344] [2021-10-11 02:21:36,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:36,081 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:21:36,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:36 WrapperNode [2021-10-11 02:21:36,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:36,083 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:36,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:21:36,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:21:36,093 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 02:21:36,125 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 02:21:36,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:36,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:21:36,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:21:36,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:21:36,193 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 02:21:36,193 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 02:21:36,199 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 02:21:36,199 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 02:21:36,221 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 02:21:36,241 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 02:21:36,247 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 02:21:36,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:21:36,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:21:36,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:21:36,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:21:36,264 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_00c7b391-ce1a-4a35-91cd-10f302597db6/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 02:21:36,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:21:36,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:21:36,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:21:36,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:21:38,954 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:21:38,955 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:21:38,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:38 BoogieIcfgContainer [2021-10-11 02:21:38,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:21:38,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:21:38,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:21:38,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:21:38,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:21:35" (1/3) ... [2021-10-11 02:21:38,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a9b9be 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 02:21:38,971 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 02:21:38,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a9b9be 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 02:21:38,971 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 02:21:38,974 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label21.c [2021-10-11 02:21:38,991 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:21:38,996 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:21:39,013 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:21:39,056 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:21:39,056 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:21:39,057 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:21:39,057 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:21:39,057 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:21:39,057 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:21:39,058 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:21:39,058 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:21:39,077 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2021-10-11 02:21:39,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-11 02:21:39,093 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:39,094 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:39,094 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:39,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:39,101 INFO L82 PathProgramCache]: Analyzing trace with hash 925943622, now seen corresponding path program 1 times [2021-10-11 02:21:39,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:39,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319488816] [2021-10-11 02:21:39,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:39,565 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 02:21:39,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319488816] [2021-10-11 02:21:39,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:39,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:39,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569653675] [2021-10-11 02:21:39,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:39,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:39,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:39,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:39,590 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2021-10-11 02:21:40,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:40,151 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-11 02:21:40,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:40,153 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2021-10-11 02:21:40,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:40,168 INFO L225 Difference]: With dead ends: 251 [2021-10-11 02:21:40,168 INFO L226 Difference]: Without dead ends: 163 [2021-10-11 02:21:40,172 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 02:21:40,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-11 02:21:40,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-11 02:21:40,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-10-11 02:21:40,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2021-10-11 02:21:40,231 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2021-10-11 02:21:40,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:40,232 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2021-10-11 02:21:40,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:40,233 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2021-10-11 02:21:40,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-11 02:21:40,238 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:40,238 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:40,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:21:40,239 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:40,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:40,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1427753586, now seen corresponding path program 1 times [2021-10-11 02:21:40,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:40,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113831498] [2021-10-11 02:21:40,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:40,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:40,327 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:40,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113831498] [2021-10-11 02:21:40,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:40,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:40,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952798028] [2021-10-11 02:21:40,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:40,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:40,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:40,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:40,335 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand 3 states. [2021-10-11 02:21:40,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:40,631 INFO L93 Difference]: Finished difference Result 325 states and 625 transitions. [2021-10-11 02:21:40,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:40,631 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2021-10-11 02:21:40,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:40,637 INFO L225 Difference]: With dead ends: 325 [2021-10-11 02:21:40,638 INFO L226 Difference]: Without dead ends: 163 [2021-10-11 02:21:40,640 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 02:21:40,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-11 02:21:40,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-11 02:21:40,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-10-11 02:21:40,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 283 transitions. [2021-10-11 02:21:40,663 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 283 transitions. Word has length 91 [2021-10-11 02:21:40,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:40,663 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 283 transitions. [2021-10-11 02:21:40,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:40,664 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 283 transitions. [2021-10-11 02:21:40,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-11 02:21:40,676 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:40,677 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:40,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:21:40,677 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:40,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:40,678 INFO L82 PathProgramCache]: Analyzing trace with hash 221744101, now seen corresponding path program 1 times [2021-10-11 02:21:40,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:40,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358481664] [2021-10-11 02:21:40,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:40,839 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:40,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358481664] [2021-10-11 02:21:40,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:40,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:40,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198862280] [2021-10-11 02:21:40,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:40,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:40,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:40,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:40,848 INFO L87 Difference]: Start difference. First operand 163 states and 283 transitions. Second operand 3 states. [2021-10-11 02:21:41,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:41,296 INFO L93 Difference]: Finished difference Result 485 states and 846 transitions. [2021-10-11 02:21:41,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:41,297 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2021-10-11 02:21:41,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:41,299 INFO L225 Difference]: With dead ends: 485 [2021-10-11 02:21:41,300 INFO L226 Difference]: Without dead ends: 323 [2021-10-11 02:21:41,301 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 02:21:41,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-11 02:21:41,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 243. [2021-10-11 02:21:41,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2021-10-11 02:21:41,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 373 transitions. [2021-10-11 02:21:41,316 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 373 transitions. Word has length 98 [2021-10-11 02:21:41,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:41,316 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 373 transitions. [2021-10-11 02:21:41,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:41,317 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 373 transitions. [2021-10-11 02:21:41,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-11 02:21:41,336 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:41,336 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:21:41,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:21:41,336 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:41,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:41,337 INFO L82 PathProgramCache]: Analyzing trace with hash -2134439042, now seen corresponding path program 1 times [2021-10-11 02:21:41,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:41,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877769540] [2021-10-11 02:21:41,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:41,422 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:41,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877769540] [2021-10-11 02:21:41,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:41,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:41,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244287026] [2021-10-11 02:21:41,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:41,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:41,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:41,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:41,425 INFO L87 Difference]: Start difference. First operand 243 states and 373 transitions. Second operand 3 states. [2021-10-11 02:21:41,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:41,888 INFO L93 Difference]: Finished difference Result 565 states and 885 transitions. [2021-10-11 02:21:41,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:41,888 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2021-10-11 02:21:41,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:41,894 INFO L225 Difference]: With dead ends: 565 [2021-10-11 02:21:41,894 INFO L226 Difference]: Without dead ends: 323 [2021-10-11 02:21:41,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 02:21:41,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-11 02:21:41,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-10-11 02:21:41,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2021-10-11 02:21:41,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 493 transitions. [2021-10-11 02:21:41,910 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 493 transitions. Word has length 103 [2021-10-11 02:21:41,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:41,910 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 493 transitions. [2021-10-11 02:21:41,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:41,911 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 493 transitions. [2021-10-11 02:21:41,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-11 02:21:41,912 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:41,912 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:21:41,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:21:41,913 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:41,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:41,913 INFO L82 PathProgramCache]: Analyzing trace with hash -2118181560, now seen corresponding path program 1 times [2021-10-11 02:21:41,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:41,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005262763] [2021-10-11 02:21:41,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:42,154 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:42,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005262763] [2021-10-11 02:21:42,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234332094] [2021-10-11 02:21:42,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c7b391-ce1a-4a35-91cd-10f302597db6/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:21:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:42,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:21:42,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:42,449 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:21:42,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:21:42,670 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:21:42,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:21:42,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:21:42,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105641713] [2021-10-11 02:21:42,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:42,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:42,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:42,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:21:42,674 INFO L87 Difference]: Start difference. First operand 323 states and 493 transitions. Second operand 3 states. [2021-10-11 02:21:43,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:43,222 INFO L93 Difference]: Finished difference Result 885 states and 1336 transitions. [2021-10-11 02:21:43,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:43,222 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2021-10-11 02:21:43,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:43,229 INFO L225 Difference]: With dead ends: 885 [2021-10-11 02:21:43,229 INFO L226 Difference]: Without dead ends: 563 [2021-10-11 02:21:43,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:21:43,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-10-11 02:21:43,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2021-10-11 02:21:43,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2021-10-11 02:21:43,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 703 transitions. [2021-10-11 02:21:43,263 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 703 transitions. Word has length 107 [2021-10-11 02:21:43,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:43,264 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 703 transitions. [2021-10-11 02:21:43,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:43,265 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 703 transitions. [2021-10-11 02:21:43,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-11 02:21:43,267 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:43,268 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:43,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:21:43,482 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:43,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:43,482 INFO L82 PathProgramCache]: Analyzing trace with hash -440310638, now seen corresponding path program 1 times [2021-10-11 02:21:43,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:43,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385918157] [2021-10-11 02:21:43,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:43,555 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 02:21:43,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385918157] [2021-10-11 02:21:43,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:43,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:43,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835988011] [2021-10-11 02:21:43,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:43,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:43,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:43,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:43,558 INFO L87 Difference]: Start difference. First operand 483 states and 703 transitions. Second operand 3 states. [2021-10-11 02:21:43,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:43,984 INFO L93 Difference]: Finished difference Result 1285 states and 1835 transitions. [2021-10-11 02:21:43,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:43,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2021-10-11 02:21:43,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:43,996 INFO L225 Difference]: With dead ends: 1285 [2021-10-11 02:21:43,996 INFO L226 Difference]: Without dead ends: 803 [2021-10-11 02:21:43,998 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 02:21:43,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2021-10-11 02:21:44,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2021-10-11 02:21:44,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2021-10-11 02:21:44,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1053 transitions. [2021-10-11 02:21:44,029 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1053 transitions. Word has length 111 [2021-10-11 02:21:44,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:44,030 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 1053 transitions. [2021-10-11 02:21:44,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:44,030 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1053 transitions. [2021-10-11 02:21:44,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-10-11 02:21:44,033 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:44,033 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:21:44,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:21:44,034 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:44,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:44,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1534360197, now seen corresponding path program 1 times [2021-10-11 02:21:44,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:44,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284007732] [2021-10-11 02:21:44,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:44,191 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:21:44,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284007732] [2021-10-11 02:21:44,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:44,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:44,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828045279] [2021-10-11 02:21:44,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:44,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:44,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:44,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:44,197 INFO L87 Difference]: Start difference. First operand 803 states and 1053 transitions. Second operand 3 states. [2021-10-11 02:21:44,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:44,659 INFO L93 Difference]: Finished difference Result 1845 states and 2475 transitions. [2021-10-11 02:21:44,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:44,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2021-10-11 02:21:44,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:44,666 INFO L225 Difference]: With dead ends: 1845 [2021-10-11 02:21:44,666 INFO L226 Difference]: Without dead ends: 963 [2021-10-11 02:21:44,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 963 states. [2021-10-11 02:21:44,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2021-10-11 02:21:44,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2021-10-11 02:21:44,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1131 transitions. [2021-10-11 02:21:44,699 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1131 transitions. Word has length 133 [2021-10-11 02:21:44,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:44,699 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1131 transitions. [2021-10-11 02:21:44,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:44,699 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1131 transitions. [2021-10-11 02:21:44,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-10-11 02:21:44,703 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:44,703 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:21:44,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:21:44,704 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:44,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:44,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1274103748, now seen corresponding path program 1 times [2021-10-11 02:21:44,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:44,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761962714] [2021-10-11 02:21:44,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:44,849 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-10-11 02:21:44,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761962714] [2021-10-11 02:21:44,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:44,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:44,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017120909] [2021-10-11 02:21:44,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:44,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:44,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:44,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:44,853 INFO L87 Difference]: Start difference. First operand 963 states and 1131 transitions. Second operand 3 states. [2021-10-11 02:21:45,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:45,203 INFO L93 Difference]: Finished difference Result 1765 states and 2062 transitions. [2021-10-11 02:21:45,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:45,204 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2021-10-11 02:21:45,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:45,209 INFO L225 Difference]: With dead ends: 1765 [2021-10-11 02:21:45,209 INFO L226 Difference]: Without dead ends: 803 [2021-10-11 02:21:45,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 02:21:45,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2021-10-11 02:21:45,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2021-10-11 02:21:45,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2021-10-11 02:21:45,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 887 transitions. [2021-10-11 02:21:45,232 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 887 transitions. Word has length 154 [2021-10-11 02:21:45,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:45,232 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 887 transitions. [2021-10-11 02:21:45,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:45,233 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 887 transitions. [2021-10-11 02:21:45,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-10-11 02:21:45,236 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:45,236 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:45,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:21:45,237 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:45,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:45,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1296467717, now seen corresponding path program 1 times [2021-10-11 02:21:45,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:45,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738265669] [2021-10-11 02:21:45,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:45,611 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 68 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:45,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738265669] [2021-10-11 02:21:45,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178023878] [2021-10-11 02:21:45,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c7b391-ce1a-4a35-91cd-10f302597db6/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:21:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:45,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:21:45,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-11 02:21:46,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:21:46,180 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-11 02:21:46,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:21:46,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:21:46,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138348390] [2021-10-11 02:21:46,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:46,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:46,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:46,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:21:46,184 INFO L87 Difference]: Start difference. First operand 803 states and 887 transitions. Second operand 3 states. [2021-10-11 02:21:46,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:46,548 INFO L93 Difference]: Finished difference Result 1845 states and 2063 transitions. [2021-10-11 02:21:46,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:46,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 178 [2021-10-11 02:21:46,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:46,555 INFO L225 Difference]: With dead ends: 1845 [2021-10-11 02:21:46,556 INFO L226 Difference]: Without dead ends: 1123 [2021-10-11 02:21:46,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 353 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:21:46,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2021-10-11 02:21:46,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1043. [2021-10-11 02:21:46,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2021-10-11 02:21:46,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1150 transitions. [2021-10-11 02:21:46,590 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1150 transitions. Word has length 178 [2021-10-11 02:21:46,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:46,591 INFO L481 AbstractCegarLoop]: Abstraction has 1043 states and 1150 transitions. [2021-10-11 02:21:46,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:46,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1150 transitions. [2021-10-11 02:21:46,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-10-11 02:21:46,596 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:46,596 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 02:21:46,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:21:46,809 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:46,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:46,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1071023686, now seen corresponding path program 1 times [2021-10-11 02:21:46,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:46,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868314922] [2021-10-11 02:21:46,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:46,932 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-11 02:21:46,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868314922] [2021-10-11 02:21:46,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:46,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:46,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205288352] [2021-10-11 02:21:46,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:46,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:46,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:46,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:46,935 INFO L87 Difference]: Start difference. First operand 1043 states and 1150 transitions. Second operand 3 states. [2021-10-11 02:21:47,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:47,279 INFO L93 Difference]: Finished difference Result 2243 states and 2475 transitions. [2021-10-11 02:21:47,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:47,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2021-10-11 02:21:47,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:47,280 INFO L225 Difference]: With dead ends: 2243 [2021-10-11 02:21:47,280 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:21:47,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 02:21:47,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:21:47,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:21:47,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:21:47,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:21:47,286 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 196 [2021-10-11 02:21:47,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:47,286 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:21:47,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:47,286 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:21:47,286 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:21:47,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:21:47,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:21:47,513 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2021-10-11 02:21:47,650 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2021-10-11 02:21:47,653 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-11 02:21:47,654 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-11 02:21:47,654 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-11 02:21:47,654 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-11 02:21:47,654 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-11 02:21:47,654 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-11 02:21:47,654 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-11 02:21:47,654 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-11 02:21:47,655 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-11 02:21:47,655 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-11 02:21:47,655 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-11 02:21:47,655 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-11 02:21:47,655 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-11 02:21:47,655 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-11 02:21:47,655 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-11 02:21:47,656 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-11 02:21:47,656 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-11 02:21:47,656 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-11 02:21:47,656 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-11 02:21:47,656 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-11 02:21:47,656 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-11 02:21:47,656 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-11 02:21:47,657 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-11 02:21:47,657 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-11 02:21:47,657 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-11 02:21:47,657 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-11 02:21:47,657 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:21:47,657 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-11 02:21:47,657 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-11 02:21:47,657 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-11 02:21:47,658 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-11 02:21:47,658 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-11 02:21:47,658 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-11 02:21:47,658 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-11 02:21:47,658 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-11 02:21:47,658 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-11 02:21:47,658 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 470) no Hoare annotation was computed. [2021-10-11 02:21:47,659 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-11 02:21:47,659 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-11 02:21:47,659 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-11 02:21:47,659 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-11 02:21:47,659 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-11 02:21:47,659 INFO L262 CegarLoopResult]: For program point L466-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 02:21:47,659 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-11 02:21:47,660 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-11 02:21:47,660 INFO L262 CegarLoopResult]: For program point L469-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 02:21:47,660 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-11 02:21:47,660 INFO L262 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2021-10-11 02:21:47,660 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-11 02:21:47,660 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-11 02:21:47,660 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-11 02:21:47,660 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-11 02:21:47,661 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-11 02:21:47,661 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-11 02:21:47,661 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-11 02:21:47,661 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-11 02:21:47,661 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse2 (= ~a25~0 1)) (.cse5 (= ~a19~0 1)) (.cse3 (<= 10 ~a28~0)) (.cse4 (<= 8 ~a17~0)) (.cse0 (<= ~a17~0 8)) (.cse1 (<= ~a28~0 10))) (or (and .cse0 (<= ~a25~0 0) .cse1) (and .cse2 (<= ~a28~0 7) .cse0) (and .cse2 (= ~a11~0 1) .cse0 .cse1) (and .cse3 .cse4 .cse2 .cse0 .cse1) (and .cse5 .cse4 .cse2 .cse0) (and .cse5 .cse3 .cse4 .cse0 .cse1))) [2021-10-11 02:21:47,662 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-11 02:21:47,662 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-11 02:21:47,662 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-11 02:21:47,662 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-11 02:21:47,662 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-11 02:21:47,662 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-11 02:21:47,662 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-11 02:21:47,663 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-11 02:21:47,663 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:21:47,663 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-11 02:21:47,663 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-11 02:21:47,663 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse2 (= ~a25~0 1)) (.cse5 (= ~a19~0 1)) (.cse3 (<= 10 ~a28~0)) (.cse4 (<= 8 ~a17~0)) (.cse0 (<= ~a17~0 8)) (.cse1 (<= ~a28~0 10))) (or (and .cse0 (<= ~a25~0 0) .cse1) (and .cse2 (<= ~a28~0 7) .cse0) (and .cse2 (= ~a11~0 1) .cse0 .cse1) (and .cse3 .cse4 .cse2 .cse0 .cse1) (and .cse5 .cse4 .cse2 .cse0) (and .cse5 .cse3 .cse4 .cse0 .cse1))) [2021-10-11 02:21:47,663 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-11 02:21:47,663 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-11 02:21:47,664 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-11 02:21:47,664 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-11 02:21:47,664 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-11 02:21:47,664 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-11 02:21:47,664 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-11 02:21:47,664 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-11 02:21:47,664 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-11 02:21:47,664 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-11 02:21:47,665 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-11 02:21:47,665 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-11 02:21:47,665 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-11 02:21:47,665 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-11 02:21:47,665 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-11 02:21:47,665 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-11 02:21:47,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:21:47 BoogieIcfgContainer [2021-10-11 02:21:47,687 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:21:47,687 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:21:47,687 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:21:47,688 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:21:47,688 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 02:21:47,692 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:21:47,713 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2021-10-11 02:21:47,715 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:21:47,717 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:21:47,719 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:21:47,838 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c7b391-ce1a-4a35-91cd-10f302597db6/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:21:47,838 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:21:47,839 INFO L168 Benchmark]: Toolchain (without parser) took 12482.38 ms. Allocated memory was 100.7 MB in the beginning and 281.0 MB in the end (delta: 180.4 MB). Free memory was 57.0 MB in the beginning and 204.5 MB in the end (delta: -147.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:47,840 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 100.7 MB. Free memory is still 75.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:47,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 723.49 ms. Allocated memory is still 100.7 MB. Free memory was 56.8 MB in the beginning and 59.2 MB in the end (delta: -2.4 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:47,841 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.15 ms. Allocated memory is still 100.7 MB. Free memory was 59.2 MB in the beginning and 53.7 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:47,841 INFO L168 Benchmark]: Boogie Preprocessor took 78.70 ms. Allocated memory is still 100.7 MB. Free memory was 53.7 MB in the beginning and 48.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:47,842 INFO L168 Benchmark]: RCFGBuilder took 2698.04 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 48.8 MB in the beginning and 60.5 MB in the end (delta: -11.7 MB). Peak memory consumption was 38.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:47,842 INFO L168 Benchmark]: TraceAbstraction took 8723.39 ms. Allocated memory was 146.8 MB in the beginning and 281.0 MB in the end (delta: 134.2 MB). Free memory was 60.5 MB in the beginning and 220.2 MB in the end (delta: -159.8 MB). Peak memory consumption was 110.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:47,843 INFO L168 Benchmark]: Witness Printer took 151.22 ms. Allocated memory is still 281.0 MB. Free memory was 220.2 MB in the beginning and 204.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:47,845 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 100.7 MB. Free memory is still 75.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 723.49 ms. Allocated memory is still 100.7 MB. Free memory was 56.8 MB in the beginning and 59.2 MB in the end (delta: -2.4 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 99.15 ms. Allocated memory is still 100.7 MB. Free memory was 59.2 MB in the beginning and 53.7 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 78.70 ms. Allocated memory is still 100.7 MB. Free memory was 53.7 MB in the beginning and 48.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2698.04 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 48.8 MB in the beginning and 60.5 MB in the end (delta: -11.7 MB). Peak memory consumption was 38.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8723.39 ms. Allocated memory was 146.8 MB in the beginning and 281.0 MB in the end (delta: 134.2 MB). Free memory was 60.5 MB in the beginning and 220.2 MB in the end (delta: -159.8 MB). Peak memory consumption was 110.8 MB. Max. memory is 16.1 GB. * Witness Printer took 151.22 ms. Allocated memory is still 281.0 MB. Free memory was 220.2 MB in the beginning and 204.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 470]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((a17 <= 8 && a25 <= 0) && a28 <= 10) || ((a25 == 1 && a28 <= 7) && a17 <= 8)) || (((a25 == 1 && a11 == 1) && a17 <= 8) && a28 <= 10)) || ((((10 <= a28 && 8 <= a17) && a25 == 1) && a17 <= 8) && a28 <= 10)) || (((a19 == 1 && 8 <= a17) && a25 == 1) && a17 <= 8)) || ((((a19 == 1 && 10 <= a28) && 8 <= a17) && a17 <= 8) && a28 <= 10) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((a17 <= 8 && a25 <= 0) && a28 <= 10) || ((a25 == 1 && a28 <= 7) && a17 <= 8)) || (((a25 == 1 && a11 == 1) && a17 <= 8) && a28 <= 10)) || ((((10 <= a28 && 8 <= a17) && a25 == 1) && a17 <= 8) && a28 <= 10)) || (((a19 == 1 && 8 <= a17) && a25 == 1) && a17 <= 8)) || ((((a19 == 1 && 10 <= a28) && 8 <= a17) && a17 <= 8) && a28 <= 10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.2s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 620 SDtfs, 599 SDslu, 54 SDs, 0 SdLazy, 1995 SolverSat, 500 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 594 GetRequests, 576 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1043occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 240 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 159 HoareAnnotationTreeSize, 3 FomulaSimplifications, 632 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 160 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 1536 NumberOfCodeBlocks, 1536 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1807 ConstructedInterpolants, 0 QuantifiedInterpolants, 894305 SizeOfPredicates, 0 NumberOfNonLiveVariables, 600 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 984/1058 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 correct! Received shutdown request...