./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label14.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_7d52b370-8c65-4e87-a57d-1bbca90790d9/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d52b370-8c65-4e87-a57d-1bbca90790d9/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_7d52b370-8c65-4e87-a57d-1bbca90790d9/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d52b370-8c65-4e87-a57d-1bbca90790d9/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label14.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d52b370-8c65-4e87-a57d-1bbca90790d9/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_7d52b370-8c65-4e87-a57d-1bbca90790d9/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 2076015a5908970d35728e852c46f824d2f96c99 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:28:23,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:28:23,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:28:24,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:28:24,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:28:24,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:28:24,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:28:24,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:28:24,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:28:24,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:28:24,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:28:24,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:28:24,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:28:24,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:28:24,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:28:24,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:28:24,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:28:24,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:28:24,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:28:24,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:28:24,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:28:24,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:28:24,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:28:24,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:28:24,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:28:24,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:28:24,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:28:24,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:28:24,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:28:24,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:28:24,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:28:24,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:28:24,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:28:24,086 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:28:24,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:28:24,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:28:24,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:28:24,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:28:24,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:28:24,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:28:24,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:28:24,093 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d52b370-8c65-4e87-a57d-1bbca90790d9/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:28:24,131 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:28:24,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:28:24,132 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:28:24,132 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:28:24,133 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:28:24,133 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:28:24,133 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:28:24,133 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:28:24,134 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:28:24,134 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:28:24,134 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:28:24,134 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:28:24,135 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:28:24,135 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:28:24,135 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:28:24,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:28:24,136 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:28:24,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:28:24,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:28:24,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:28:24,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:28:24,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:28:24,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:28:24,138 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:28:24,138 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:28:24,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:28:24,138 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:28:24,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:28:24,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:28:24,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:28:24,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:28:24,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:28:24,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:28:24,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:28:24,140 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:28:24,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:28:24,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:28:24,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:28:24,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:28:24,141 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_7d52b370-8c65-4e87-a57d-1bbca90790d9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d52b370-8c65-4e87-a57d-1bbca90790d9/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2076015a5908970d35728e852c46f824d2f96c99 [2021-10-11 02:28:24,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:28:24,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:28:24,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:28:24,432 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:28:24,433 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:28:24,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d52b370-8c65-4e87-a57d-1bbca90790d9/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem02_label14.c [2021-10-11 02:28:24,505 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d52b370-8c65-4e87-a57d-1bbca90790d9/bin/utaipan-WLngWcDbfI/data/a6b9248fc/ea060930dcc944828184ab480a0045a7/FLAG2f54b5217 [2021-10-11 02:28:25,048 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:28:25,049 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d52b370-8c65-4e87-a57d-1bbca90790d9/sv-benchmarks/c/eca-rers2012/Problem02_label14.c [2021-10-11 02:28:25,060 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d52b370-8c65-4e87-a57d-1bbca90790d9/bin/utaipan-WLngWcDbfI/data/a6b9248fc/ea060930dcc944828184ab480a0045a7/FLAG2f54b5217 [2021-10-11 02:28:25,312 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d52b370-8c65-4e87-a57d-1bbca90790d9/bin/utaipan-WLngWcDbfI/data/a6b9248fc/ea060930dcc944828184ab480a0045a7 [2021-10-11 02:28:25,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:28:25,316 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:28:25,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:25,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:28:25,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:28:25,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:25" (1/1) ... [2021-10-11 02:28:25,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44027534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:25, skipping insertion in model container [2021-10-11 02:28:25,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:25" (1/1) ... [2021-10-11 02:28:25,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:28:25,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:28:25,734 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_7d52b370-8c65-4e87-a57d-1bbca90790d9/sv-benchmarks/c/eca-rers2012/Problem02_label14.c[18715,18728] [2021-10-11 02:28:25,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:25,775 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:28:25,885 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_7d52b370-8c65-4e87-a57d-1bbca90790d9/sv-benchmarks/c/eca-rers2012/Problem02_label14.c[18715,18728] [2021-10-11 02:28:25,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:25,916 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:28:25,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:25 WrapperNode [2021-10-11 02:28:25,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:25,918 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:25,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:28:25,919 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:28:25,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:25" (1/1) ... [2021-10-11 02:28:25,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:25" (1/1) ... [2021-10-11 02:28:26,030 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:26,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:28:26,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:28:26,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:28:26,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:25" (1/1) ... [2021-10-11 02:28:26,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:25" (1/1) ... [2021-10-11 02:28:26,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:25" (1/1) ... [2021-10-11 02:28:26,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:25" (1/1) ... [2021-10-11 02:28:26,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:25" (1/1) ... [2021-10-11 02:28:26,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:25" (1/1) ... [2021-10-11 02:28:26,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:25" (1/1) ... [2021-10-11 02:28:26,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:28:26,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:28:26,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:28:26,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:28:26,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:25" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d52b370-8c65-4e87-a57d-1bbca90790d9/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 02:28:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:28:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:28:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:28:26,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:28:28,806 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:28:28,807 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:28:28,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:28 BoogieIcfgContainer [2021-10-11 02:28:28,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:28:28,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:28:28,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:28:28,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:28:28,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:28:25" (1/3) ... [2021-10-11 02:28:28,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad7ce13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:28, skipping insertion in model container [2021-10-11 02:28:28,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:25" (2/3) ... [2021-10-11 02:28:28,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad7ce13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:28, skipping insertion in model container [2021-10-11 02:28:28,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:28" (3/3) ... [2021-10-11 02:28:28,827 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label14.c [2021-10-11 02:28:28,849 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:28:28,853 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:28:28,867 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:28:28,911 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:28:28,913 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:28:28,914 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:28:28,914 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:28:28,914 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:28:28,915 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:28:28,915 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:28:28,915 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:28:28,935 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2021-10-11 02:28:28,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-11 02:28:28,950 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:28,951 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 02:28:28,952 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:28,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:28,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1497208880, now seen corresponding path program 1 times [2021-10-11 02:28:28,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:28,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607234080] [2021-10-11 02:28:28,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:29,509 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 02:28:29,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607234080] [2021-10-11 02:28:29,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:29,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:29,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019242720] [2021-10-11 02:28:29,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:29,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:29,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:29,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:29,539 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2021-10-11 02:28:30,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:30,252 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-11 02:28:30,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:30,254 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2021-10-11 02:28:30,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:30,279 INFO L225 Difference]: With dead ends: 251 [2021-10-11 02:28:30,279 INFO L226 Difference]: Without dead ends: 163 [2021-10-11 02:28:30,283 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 02:28:30,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-11 02:28:30,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-11 02:28:30,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-10-11 02:28:30,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 288 transitions. [2021-10-11 02:28:30,336 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 288 transitions. Word has length 80 [2021-10-11 02:28:30,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:30,337 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 288 transitions. [2021-10-11 02:28:30,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:30,337 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 288 transitions. [2021-10-11 02:28:30,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-11 02:28:30,342 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:30,342 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 02:28:30,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:28:30,343 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:30,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:30,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1174959759, now seen corresponding path program 1 times [2021-10-11 02:28:30,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:30,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350119802] [2021-10-11 02:28:30,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:30,422 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 02:28:30,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350119802] [2021-10-11 02:28:30,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:30,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:30,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899182440] [2021-10-11 02:28:30,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:30,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:30,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:30,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:30,426 INFO L87 Difference]: Start difference. First operand 163 states and 288 transitions. Second operand 3 states. [2021-10-11 02:28:30,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:30,989 INFO L93 Difference]: Finished difference Result 485 states and 861 transitions. [2021-10-11 02:28:30,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:30,989 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2021-10-11 02:28:30,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:30,998 INFO L225 Difference]: With dead ends: 485 [2021-10-11 02:28:30,998 INFO L226 Difference]: Without dead ends: 323 [2021-10-11 02:28:31,000 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 02:28:31,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-11 02:28:31,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-10-11 02:28:31,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2021-10-11 02:28:31,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 473 transitions. [2021-10-11 02:28:31,022 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 473 transitions. Word has length 98 [2021-10-11 02:28:31,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:31,022 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 473 transitions. [2021-10-11 02:28:31,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:31,022 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 473 transitions. [2021-10-11 02:28:31,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-10-11 02:28:31,028 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:31,028 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:28:31,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:28:31,029 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:31,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:31,030 INFO L82 PathProgramCache]: Analyzing trace with hash -2099185647, now seen corresponding path program 1 times [2021-10-11 02:28:31,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:31,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172889767] [2021-10-11 02:28:31,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:31,101 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:31,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172889767] [2021-10-11 02:28:31,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:31,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:31,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843600601] [2021-10-11 02:28:31,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:31,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:31,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:31,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:31,104 INFO L87 Difference]: Start difference. First operand 323 states and 473 transitions. Second operand 3 states. [2021-10-11 02:28:31,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:31,368 INFO L93 Difference]: Finished difference Result 645 states and 945 transitions. [2021-10-11 02:28:31,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:31,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2021-10-11 02:28:31,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:31,371 INFO L225 Difference]: With dead ends: 645 [2021-10-11 02:28:31,371 INFO L226 Difference]: Without dead ends: 323 [2021-10-11 02:28:31,373 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 02:28:31,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-11 02:28:31,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-10-11 02:28:31,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2021-10-11 02:28:31,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 433 transitions. [2021-10-11 02:28:31,392 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 433 transitions. Word has length 99 [2021-10-11 02:28:31,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:31,392 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 433 transitions. [2021-10-11 02:28:31,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:31,392 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 433 transitions. [2021-10-11 02:28:31,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-11 02:28:31,398 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:31,398 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 02:28:31,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:28:31,399 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:31,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:31,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1029755654, now seen corresponding path program 1 times [2021-10-11 02:28:31,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:31,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629780368] [2021-10-11 02:28:31,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:31,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:31,499 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 02:28:31,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629780368] [2021-10-11 02:28:31,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:31,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:31,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769589212] [2021-10-11 02:28:31,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:31,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:31,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:31,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:31,502 INFO L87 Difference]: Start difference. First operand 323 states and 433 transitions. Second operand 3 states. [2021-10-11 02:28:31,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:31,943 INFO L93 Difference]: Finished difference Result 725 states and 980 transitions. [2021-10-11 02:28:31,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:31,943 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2021-10-11 02:28:31,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:31,946 INFO L225 Difference]: With dead ends: 725 [2021-10-11 02:28:31,946 INFO L226 Difference]: Without dead ends: 403 [2021-10-11 02:28:31,947 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 02:28:31,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-10-11 02:28:31,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2021-10-11 02:28:31,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2021-10-11 02:28:31,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 528 transitions. [2021-10-11 02:28:31,964 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 528 transitions. Word has length 103 [2021-10-11 02:28:31,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:31,965 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 528 transitions. [2021-10-11 02:28:31,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:31,965 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 528 transitions. [2021-10-11 02:28:31,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-11 02:28:31,972 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:31,972 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 02:28:31,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:28:31,972 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:31,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:31,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1100246352, now seen corresponding path program 1 times [2021-10-11 02:28:31,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:31,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562549059] [2021-10-11 02:28:31,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:32,209 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 02:28:32,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562549059] [2021-10-11 02:28:32,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185940533] [2021-10-11 02:28:32,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d52b370-8c65-4e87-a57d-1bbca90790d9/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 02:28:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:32,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:28:32,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:32,616 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 02:28:32,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:32,732 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 02:28:32,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:28:32,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:28:32,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475846855] [2021-10-11 02:28:32,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:32,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:32,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:32,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:28:32,735 INFO L87 Difference]: Start difference. First operand 403 states and 528 transitions. Second operand 3 states. [2021-10-11 02:28:33,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:33,282 INFO L93 Difference]: Finished difference Result 965 states and 1291 transitions. [2021-10-11 02:28:33,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:33,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2021-10-11 02:28:33,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:33,286 INFO L225 Difference]: With dead ends: 965 [2021-10-11 02:28:33,286 INFO L226 Difference]: Without dead ends: 483 [2021-10-11 02:28:33,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:28:33,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-10-11 02:28:33,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2021-10-11 02:28:33,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2021-10-11 02:28:33,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 561 transitions. [2021-10-11 02:28:33,302 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 561 transitions. Word has length 107 [2021-10-11 02:28:33,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:33,303 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 561 transitions. [2021-10-11 02:28:33,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:33,303 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 561 transitions. [2021-10-11 02:28:33,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-10-11 02:28:33,316 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:33,316 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:28:33,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:33,541 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:33,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:33,542 INFO L82 PathProgramCache]: Analyzing trace with hash -356160973, now seen corresponding path program 1 times [2021-10-11 02:28:33,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:33,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333845931] [2021-10-11 02:28:33,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:33,706 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-11 02:28:33,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333845931] [2021-10-11 02:28:33,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:33,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:28:33,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325360699] [2021-10-11 02:28:33,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:28:33,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:33,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:28:33,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:33,710 INFO L87 Difference]: Start difference. First operand 483 states and 561 transitions. Second operand 5 states. [2021-10-11 02:28:34,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:34,536 INFO L93 Difference]: Finished difference Result 1066 states and 1226 transitions. [2021-10-11 02:28:34,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:28:34,537 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2021-10-11 02:28:34,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:34,542 INFO L225 Difference]: With dead ends: 1066 [2021-10-11 02:28:34,542 INFO L226 Difference]: Without dead ends: 584 [2021-10-11 02:28:34,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:28:34,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-10-11 02:28:34,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 483. [2021-10-11 02:28:34,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2021-10-11 02:28:34,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 557 transitions. [2021-10-11 02:28:34,561 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 557 transitions. Word has length 128 [2021-10-11 02:28:34,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:34,561 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 557 transitions. [2021-10-11 02:28:34,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:28:34,562 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 557 transitions. [2021-10-11 02:28:34,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-10-11 02:28:34,564 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:34,564 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:28:34,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:28:34,565 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:34,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:34,566 INFO L82 PathProgramCache]: Analyzing trace with hash -509347971, now seen corresponding path program 1 times [2021-10-11 02:28:34,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:34,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331955387] [2021-10-11 02:28:34,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:34,723 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-10-11 02:28:34,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331955387] [2021-10-11 02:28:34,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:34,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:34,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045127861] [2021-10-11 02:28:34,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:34,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:34,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:34,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:34,728 INFO L87 Difference]: Start difference. First operand 483 states and 557 transitions. Second operand 3 states. [2021-10-11 02:28:35,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:35,070 INFO L93 Difference]: Finished difference Result 1365 states and 1585 transitions. [2021-10-11 02:28:35,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:35,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2021-10-11 02:28:35,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:35,073 INFO L225 Difference]: With dead ends: 1365 [2021-10-11 02:28:35,074 INFO L226 Difference]: Without dead ends: 483 [2021-10-11 02:28:35,075 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 02:28:35,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-10-11 02:28:35,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2021-10-11 02:28:35,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2021-10-11 02:28:35,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 534 transitions. [2021-10-11 02:28:35,089 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 534 transitions. Word has length 170 [2021-10-11 02:28:35,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:35,090 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 534 transitions. [2021-10-11 02:28:35,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:35,090 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 534 transitions. [2021-10-11 02:28:35,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-10-11 02:28:35,092 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:35,092 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 02:28:35,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:28:35,093 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:35,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:35,093 INFO L82 PathProgramCache]: Analyzing trace with hash -313460315, now seen corresponding path program 1 times [2021-10-11 02:28:35,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:35,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059249844] [2021-10-11 02:28:35,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:35,388 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 02:28:35,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059249844] [2021-10-11 02:28:35,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248701247] [2021-10-11 02:28:35,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d52b370-8c65-4e87-a57d-1bbca90790d9/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 02:28:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:35,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:28:35,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:35,741 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 02:28:35,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:35,930 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 02:28:35,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:28:35,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:28:35,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311645404] [2021-10-11 02:28:35,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:35,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:35,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:35,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:28:35,939 INFO L87 Difference]: Start difference. First operand 483 states and 534 transitions. Second operand 3 states. [2021-10-11 02:28:36,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:36,277 INFO L93 Difference]: Finished difference Result 1205 states and 1328 transitions. [2021-10-11 02:28:36,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:36,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 178 [2021-10-11 02:28:36,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:36,283 INFO L225 Difference]: With dead ends: 1205 [2021-10-11 02:28:36,283 INFO L226 Difference]: Without dead ends: 563 [2021-10-11 02:28:36,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 354 SyntacticMatches, 0 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 02:28:36,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-10-11 02:28:36,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2021-10-11 02:28:36,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2021-10-11 02:28:36,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 612 transitions. [2021-10-11 02:28:36,310 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 612 transitions. Word has length 178 [2021-10-11 02:28:36,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:36,310 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 612 transitions. [2021-10-11 02:28:36,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:36,311 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 612 transitions. [2021-10-11 02:28:36,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-10-11 02:28:36,315 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:36,315 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-10-11 02:28:36,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:36,529 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:36,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:36,530 INFO L82 PathProgramCache]: Analyzing trace with hash -2007022978, now seen corresponding path program 1 times [2021-10-11 02:28:36,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:36,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437186390] [2021-10-11 02:28:36,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:36,674 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-10-11 02:28:36,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437186390] [2021-10-11 02:28:36,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:36,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:36,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263021648] [2021-10-11 02:28:36,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:36,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:36,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:36,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:36,677 INFO L87 Difference]: Start difference. First operand 563 states and 612 transitions. Second operand 3 states. [2021-10-11 02:28:37,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:37,033 INFO L93 Difference]: Finished difference Result 1205 states and 1325 transitions. [2021-10-11 02:28:37,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:37,033 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2021-10-11 02:28:37,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:37,037 INFO L225 Difference]: With dead ends: 1205 [2021-10-11 02:28:37,037 INFO L226 Difference]: Without dead ends: 643 [2021-10-11 02:28:37,039 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 02:28:37,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-10-11 02:28:37,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2021-10-11 02:28:37,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2021-10-11 02:28:37,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 693 transitions. [2021-10-11 02:28:37,059 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 693 transitions. Word has length 205 [2021-10-11 02:28:37,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:37,060 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 693 transitions. [2021-10-11 02:28:37,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:37,061 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 693 transitions. [2021-10-11 02:28:37,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-10-11 02:28:37,064 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:37,065 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:37,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:28:37,065 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:37,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:37,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1524022373, now seen corresponding path program 1 times [2021-10-11 02:28:37,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:37,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726452669] [2021-10-11 02:28:37,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:37,263 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-10-11 02:28:37,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726452669] [2021-10-11 02:28:37,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:37,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:37,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979964008] [2021-10-11 02:28:37,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:37,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:37,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:37,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:37,266 INFO L87 Difference]: Start difference. First operand 643 states and 693 transitions. Second operand 3 states. [2021-10-11 02:28:37,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:37,570 INFO L93 Difference]: Finished difference Result 643 states and 693 transitions. [2021-10-11 02:28:37,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:37,571 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 215 [2021-10-11 02:28:37,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:37,572 INFO L225 Difference]: With dead ends: 643 [2021-10-11 02:28:37,572 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:28:37,573 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 02:28:37,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:28:37,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:28:37,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:28:37,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:28:37,575 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 215 [2021-10-11 02:28:37,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:37,575 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:28:37,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:37,575 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:28:37,576 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:28:37,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:28:37,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:28:37,797 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2021-10-11 02:28:37,960 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2021-10-11 02:28:37,964 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-11 02:28:37,966 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-11 02:28:37,966 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-11 02:28:37,966 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-11 02:28:37,966 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-11 02:28:37,966 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-11 02:28:37,966 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-11 02:28:37,967 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-11 02:28:37,967 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-11 02:28:37,967 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-11 02:28:37,967 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-11 02:28:37,967 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-11 02:28:37,967 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-11 02:28:37,968 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-11 02:28:37,968 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-11 02:28:37,968 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-11 02:28:37,968 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-11 02:28:37,968 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-11 02:28:37,968 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-11 02:28:37,969 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-11 02:28:37,969 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-11 02:28:37,969 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-11 02:28:37,969 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-11 02:28:37,969 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-11 02:28:37,969 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-11 02:28:37,970 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-11 02:28:37,970 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:28:37,970 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-11 02:28:37,970 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-11 02:28:37,970 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-11 02:28:37,970 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-11 02:28:37,970 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-11 02:28:37,971 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-11 02:28:37,971 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-11 02:28:37,971 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-11 02:28:37,971 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-11 02:28:37,971 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 533) no Hoare annotation was computed. [2021-10-11 02:28:37,972 INFO L262 CegarLoopResult]: For program point L529-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 02:28:37,972 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-11 02:28:37,972 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-11 02:28:37,972 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-11 02:28:37,972 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-11 02:28:37,972 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-11 02:28:37,972 INFO L262 CegarLoopResult]: For program point L532-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 02:28:37,973 INFO L262 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2021-10-11 02:28:37,973 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-11 02:28:37,973 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-11 02:28:37,973 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-11 02:28:37,973 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-11 02:28:37,973 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-11 02:28:37,974 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-11 02:28:37,974 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-11 02:28:37,979 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-11 02:28:37,979 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-11 02:28:37,979 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-11 02:28:37,980 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-11 02:28:37,982 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse1 (<= ~a17~0 8)) (.cse2 (<= ~a28~0 10)) (.cse3 (= ~a19~0 1)) (.cse4 (= ~a21~0 1)) (.cse5 (= ~a17~0 8)) (.cse0 (= ~a25~0 1)) (.cse6 (not (= ~a11~0 1)))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5 .cse2) (and .cse6 .cse1 .cse2) (and (<= ~a28~0 7) .cse1) (and (<= 10 ~a28~0) .cse1 .cse2) (and .cse3 .cse4 .cse5 .cse0 .cse6 (= ~a28~0 11)))) [2021-10-11 02:28:37,982 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-11 02:28:37,982 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-11 02:28:37,982 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-11 02:28:37,983 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-11 02:28:37,983 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-11 02:28:37,983 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-11 02:28:37,983 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-11 02:28:37,983 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-11 02:28:37,984 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:28:37,984 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-11 02:28:37,985 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-11 02:28:37,985 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse1 (<= ~a17~0 8)) (.cse2 (<= ~a28~0 10)) (.cse3 (= ~a19~0 1)) (.cse4 (= ~a21~0 1)) (.cse5 (= ~a17~0 8)) (.cse0 (= ~a25~0 1)) (.cse6 (not (= ~a11~0 1)))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5 .cse2) (and .cse6 .cse1 .cse2) (and (<= ~a28~0 7) .cse1) (and (<= 10 ~a28~0) .cse1 .cse2) (and .cse3 .cse4 .cse5 .cse0 .cse6 (= ~a28~0 11)))) [2021-10-11 02:28:37,986 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-11 02:28:37,986 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-11 02:28:37,986 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-11 02:28:37,986 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-11 02:28:37,986 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-11 02:28:37,986 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-11 02:28:37,987 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-11 02:28:37,987 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-11 02:28:37,987 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-11 02:28:37,987 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-11 02:28:37,988 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-11 02:28:37,989 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-11 02:28:37,989 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-11 02:28:37,989 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-11 02:28:37,989 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-11 02:28:37,989 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-11 02:28:38,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:28:38 BoogieIcfgContainer [2021-10-11 02:28:38,034 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:28:38,035 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:28:38,035 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:28:38,036 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:28:38,037 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:28" (3/4) ... [2021-10-11 02:28:38,042 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:28:38,083 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2021-10-11 02:28:38,085 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-11 02:28:38,087 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:28:38,090 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:28:38,290 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d52b370-8c65-4e87-a57d-1bbca90790d9/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:28:38,290 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:28:38,292 INFO L168 Benchmark]: Toolchain (without parser) took 12974.71 ms. Allocated memory was 100.7 MB in the beginning and 268.4 MB in the end (delta: 167.8 MB). Free memory was 64.7 MB in the beginning and 150.5 MB in the end (delta: -85.8 MB). Peak memory consumption was 81.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:38,293 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 100.7 MB. Free memory was 54.8 MB in the beginning and 54.8 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:38,293 INFO L168 Benchmark]: CACSL2BoogieTranslator took 596.12 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 64.4 MB in the beginning and 80.9 MB in the end (delta: -16.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:38,294 INFO L168 Benchmark]: Boogie Procedure Inliner took 112.06 ms. Allocated memory is still 121.6 MB. Free memory was 80.9 MB in the beginning and 75.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:38,294 INFO L168 Benchmark]: Boogie Preprocessor took 80.41 ms. Allocated memory is still 121.6 MB. Free memory was 75.5 MB in the beginning and 70.7 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:38,295 INFO L168 Benchmark]: RCFGBuilder took 2701.67 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 70.7 MB in the beginning and 62.6 MB in the end (delta: 8.1 MB). Peak memory consumption was 45.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:38,295 INFO L168 Benchmark]: TraceAbstraction took 9216.42 ms. Allocated memory was 146.8 MB in the beginning and 268.4 MB in the end (delta: 121.6 MB). Free memory was 61.6 MB in the beginning and 166.2 MB in the end (delta: -104.6 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:38,296 INFO L168 Benchmark]: Witness Printer took 255.45 ms. Allocated memory is still 268.4 MB. Free memory was 166.2 MB in the beginning and 150.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:38,300 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 100.7 MB. Free memory was 54.8 MB in the beginning and 54.8 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 596.12 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 64.4 MB in the beginning and 80.9 MB in the end (delta: -16.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 112.06 ms. Allocated memory is still 121.6 MB. Free memory was 80.9 MB in the beginning and 75.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 80.41 ms. Allocated memory is still 121.6 MB. Free memory was 75.5 MB in the beginning and 70.7 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2701.67 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 70.7 MB in the beginning and 62.6 MB in the end (delta: 8.1 MB). Peak memory consumption was 45.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9216.42 ms. Allocated memory was 146.8 MB in the beginning and 268.4 MB in the end (delta: 121.6 MB). Free memory was 61.6 MB in the beginning and 166.2 MB in the end (delta: -104.6 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. * Witness Printer took 255.45 ms. Allocated memory is still 268.4 MB. Free memory was 166.2 MB in the beginning and 150.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 533]: 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: ((((((a25 == 1 && a17 <= 8) && a28 <= 10) || (((a19 == 1 && a21 == 1) && a17 == 8) && a28 <= 10)) || ((!(a11 == 1) && a17 <= 8) && a28 <= 10)) || (a28 <= 7 && a17 <= 8)) || ((10 <= a28 && a17 <= 8) && a28 <= 10)) || (((((a19 == 1 && a21 == 1) && a17 == 8) && a25 == 1) && !(a11 == 1)) && a28 == 11) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((a25 == 1 && a17 <= 8) && a28 <= 10) || (((a19 == 1 && a21 == 1) && a17 == 8) && a28 <= 10)) || ((!(a11 == 1) && a17 <= 8) && a28 <= 10)) || (a28 <= 7 && a17 <= 8)) || ((10 <= a28 && a17 <= 8) && a28 <= 10)) || (((((a19 == 1 && a21 == 1) && a17 == 8) && a25 == 1) && !(a11 == 1)) && a28 == 11) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.6s, OverallIterations: 10, TraceHistogramMax: 5, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 606 SDtfs, 643 SDslu, 60 SDs, 0 SdLazy, 2192 SolverSat, 472 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 598 GetRequests, 577 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=643occurred 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: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 101 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 39 NumberOfFragments, 145 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1182 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 88 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 1668 NumberOfCodeBlocks, 1668 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1939 ConstructedInterpolants, 0 QuantifiedInterpolants, 1090511 SizeOfPredicates, 0 NumberOfNonLiveVariables, 640 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 1173/1247 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...