./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4082b2bd-a1fc-41b9-a4ae-98b610c750ec/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4082b2bd-a1fc-41b9-a4ae-98b610c750ec/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4082b2bd-a1fc-41b9-a4ae-98b610c750ec/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4082b2bd-a1fc-41b9-a4ae-98b610c750ec/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label03.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4082b2bd-a1fc-41b9-a4ae-98b610c750ec/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4082b2bd-a1fc-41b9-a4ae-98b610c750ec/bin/utaipan --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 9cd4142a6e7abbee29b4d6d57e38649ee7b6cc45 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:07:16,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:07:16,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:07:16,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:07:16,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:07:16,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:07:16,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:07:16,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:07:16,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:07:17,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:07:17,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:07:17,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:07:17,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:07:17,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:07:17,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:07:17,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:07:17,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:07:17,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:07:17,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:07:17,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:07:17,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:07:17,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:07:17,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:07:17,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:07:17,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:07:17,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:07:17,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:07:17,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:07:17,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:07:17,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:07:17,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:07:17,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:07:17,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:07:17,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:07:17,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:07:17,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:07:17,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:07:17,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:07:17,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:07:17,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:07:17,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:07:17,076 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4082b2bd-a1fc-41b9-a4ae-98b610c750ec/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:07:17,123 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:07:17,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:07:17,125 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:07:17,126 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:07:17,126 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:07:17,126 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:07:17,127 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:07:17,127 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:07:17,127 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:07:17,128 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:07:17,129 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:07:17,129 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:07:17,130 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:07:17,130 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:07:17,130 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:07:17,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:07:17,131 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:07:17,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:07:17,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:07:17,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:07:17,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:07:17,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:07:17,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:07:17,143 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:07:17,143 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:07:17,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:07:17,145 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:07:17,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:07:17,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:07:17,146 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:07:17,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:07:17,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:07:17,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:07:17,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:07:17,148 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:07:17,148 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:07:17,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:07:17,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:07:17,149 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:07:17,149 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:07:17,149 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-vcloud-master/worker/run_dir_4082b2bd-a1fc-41b9-a4ae-98b610c750ec/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4082b2bd-a1fc-41b9-a4ae-98b610c750ec/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cd4142a6e7abbee29b4d6d57e38649ee7b6cc45 [2020-11-22 13:07:17,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:07:17,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:07:17,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:07:17,457 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:07:17,458 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:07:17,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4082b2bd-a1fc-41b9-a4ae-98b610c750ec/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label03.c [2020-11-22 13:07:17,537 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4082b2bd-a1fc-41b9-a4ae-98b610c750ec/bin/utaipan/data/451250bb3/8be838ebaac743db9d6f3ce678c6c6db/FLAG856b1bad6 [2020-11-22 13:07:18,118 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:07:18,119 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4082b2bd-a1fc-41b9-a4ae-98b610c750ec/sv-benchmarks/c/eca-rers2012/Problem01_label03.c [2020-11-22 13:07:18,145 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4082b2bd-a1fc-41b9-a4ae-98b610c750ec/bin/utaipan/data/451250bb3/8be838ebaac743db9d6f3ce678c6c6db/FLAG856b1bad6 [2020-11-22 13:07:18,396 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4082b2bd-a1fc-41b9-a4ae-98b610c750ec/bin/utaipan/data/451250bb3/8be838ebaac743db9d6f3ce678c6c6db [2020-11-22 13:07:18,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:07:18,400 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:07:18,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:07:18,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:07:18,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:07:18,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:07:18" (1/1) ... [2020-11-22 13:07:18,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@448e629a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:18, skipping insertion in model container [2020-11-22 13:07:18,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:07:18" (1/1) ... [2020-11-22 13:07:18,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:07:18,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:07:19,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:07:19,040 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:07:19,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:07:19,220 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:07:19,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:19 WrapperNode [2020-11-22 13:07:19,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:07:19,222 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:07:19,222 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:07:19,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:07:19,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:19" (1/1) ... [2020-11-22 13:07:19,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:19" (1/1) ... [2020-11-22 13:07:19,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:07:19,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:07:19,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:07:19,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:07:19,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:19" (1/1) ... [2020-11-22 13:07:19,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:19" (1/1) ... [2020-11-22 13:07:19,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:19" (1/1) ... [2020-11-22 13:07:19,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:19" (1/1) ... [2020-11-22 13:07:19,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:19" (1/1) ... [2020-11-22 13:07:19,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:19" (1/1) ... [2020-11-22 13:07:19,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:19" (1/1) ... [2020-11-22 13:07:19,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:07:19,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:07:19,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:07:19,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:07:19,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4082b2bd-a1fc-41b9-a4ae-98b610c750ec/bin/utaipan/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 [2020-11-22 13:07:19,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:07:19,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:07:19,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:07:19,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:07:22,232 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:07:22,233 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 13:07:22,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:07:22 BoogieIcfgContainer [2020-11-22 13:07:22,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:07:22,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:07:22,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:07:22,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:07:22,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:07:18" (1/3) ... [2020-11-22 13:07:22,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26af1803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:07:22, skipping insertion in model container [2020-11-22 13:07:22,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:19" (2/3) ... [2020-11-22 13:07:22,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26af1803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:07:22, skipping insertion in model container [2020-11-22 13:07:22,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:07:22" (3/3) ... [2020-11-22 13:07:22,244 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label03.c [2020-11-22 13:07:22,255 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:07:22,259 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:07:22,271 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:07:22,305 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:07:22,305 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:07:22,305 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:07:22,305 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:07:22,306 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:07:22,306 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:07:22,306 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:07:22,306 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:07:22,327 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-22 13:07:22,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-22 13:07:22,341 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:22,342 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] [2020-11-22 13:07:22,342 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:22,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:22,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1520714861, now seen corresponding path program 1 times [2020-11-22 13:07:22,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:22,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040756121] [2020-11-22 13:07:22,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:22,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:22,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040756121] [2020-11-22 13:07:22,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:22,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:07:22,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655451964] [2020-11-22 13:07:22,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:07:22,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:23,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:07:23,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:23,014 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2020-11-22 13:07:24,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:24,188 INFO L93 Difference]: Finished difference Result 297 states and 569 transitions. [2020-11-22 13:07:24,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:07:24,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-11-22 13:07:24,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:24,215 INFO L225 Difference]: With dead ends: 297 [2020-11-22 13:07:24,219 INFO L226 Difference]: Without dead ends: 216 [2020-11-22 13:07:24,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:07:24,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-11-22 13:07:24,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-11-22 13:07:24,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-22 13:07:24,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 336 transitions. [2020-11-22 13:07:24,321 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 336 transitions. Word has length 71 [2020-11-22 13:07:24,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:24,323 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 336 transitions. [2020-11-22 13:07:24,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:07:24,324 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 336 transitions. [2020-11-22 13:07:24,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-22 13:07:24,339 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:24,339 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:24,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:07:24,340 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:24,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:24,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1832083908, now seen corresponding path program 1 times [2020-11-22 13:07:24,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:24,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545387074] [2020-11-22 13:07:24,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:24,629 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:24,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545387074] [2020-11-22 13:07:24,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:24,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:07:24,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383397740] [2020-11-22 13:07:24,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:07:24,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:24,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:07:24,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:24,636 INFO L87 Difference]: Start difference. First operand 216 states and 336 transitions. Second operand 4 states. [2020-11-22 13:07:25,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:25,410 INFO L93 Difference]: Finished difference Result 500 states and 848 transitions. [2020-11-22 13:07:25,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:07:25,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-11-22 13:07:25,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:25,414 INFO L225 Difference]: With dead ends: 500 [2020-11-22 13:07:25,414 INFO L226 Difference]: Without dead ends: 287 [2020-11-22 13:07:25,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:25,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-11-22 13:07:25,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 216. [2020-11-22 13:07:25,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-22 13:07:25,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 293 transitions. [2020-11-22 13:07:25,440 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 293 transitions. Word has length 78 [2020-11-22 13:07:25,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:25,445 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 293 transitions. [2020-11-22 13:07:25,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:07:25,446 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 293 transitions. [2020-11-22 13:07:25,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-22 13:07:25,447 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:25,448 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:25,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:07:25,452 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:25,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:25,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1009057864, now seen corresponding path program 1 times [2020-11-22 13:07:25,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:25,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831012054] [2020-11-22 13:07:25,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:25,565 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:25,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831012054] [2020-11-22 13:07:25,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:25,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:07:25,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71376794] [2020-11-22 13:07:25,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:07:25,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:25,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:07:25,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:25,567 INFO L87 Difference]: Start difference. First operand 216 states and 293 transitions. Second operand 4 states. [2020-11-22 13:07:26,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:26,108 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2020-11-22 13:07:26,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:07:26,109 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-11-22 13:07:26,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:26,112 INFO L225 Difference]: With dead ends: 573 [2020-11-22 13:07:26,112 INFO L226 Difference]: Without dead ends: 358 [2020-11-22 13:07:26,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:26,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-11-22 13:07:26,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-11-22 13:07:26,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-11-22 13:07:26,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 483 transitions. [2020-11-22 13:07:26,141 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 483 transitions. Word has length 86 [2020-11-22 13:07:26,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:26,142 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 483 transitions. [2020-11-22 13:07:26,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:07:26,142 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 483 transitions. [2020-11-22 13:07:26,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-22 13:07:26,145 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:26,145 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:26,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:07:26,146 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:26,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:26,146 INFO L82 PathProgramCache]: Analyzing trace with hash 554923966, now seen corresponding path program 1 times [2020-11-22 13:07:26,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:26,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711338657] [2020-11-22 13:07:26,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:26,260 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-11-22 13:07:26,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711338657] [2020-11-22 13:07:26,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:26,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:07:26,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220993009] [2020-11-22 13:07:26,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:07:26,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:26,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:07:26,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:26,265 INFO L87 Difference]: Start difference. First operand 358 states and 483 transitions. Second operand 3 states. [2020-11-22 13:07:26,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:26,719 INFO L93 Difference]: Finished difference Result 999 states and 1339 transitions. [2020-11-22 13:07:26,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:07:26,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-11-22 13:07:26,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:26,724 INFO L225 Difference]: With dead ends: 999 [2020-11-22 13:07:26,724 INFO L226 Difference]: Without dead ends: 642 [2020-11-22 13:07:26,725 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 [2020-11-22 13:07:26,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-11-22 13:07:26,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2020-11-22 13:07:26,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-11-22 13:07:26,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 779 transitions. [2020-11-22 13:07:26,755 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 779 transitions. Word has length 111 [2020-11-22 13:07:26,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:26,755 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 779 transitions. [2020-11-22 13:07:26,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:07:26,755 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 779 transitions. [2020-11-22 13:07:26,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-11-22 13:07:26,758 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:26,758 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2020-11-22 13:07:26,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 13:07:26,758 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:26,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:26,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1659119571, now seen corresponding path program 1 times [2020-11-22 13:07:26,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:26,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961713494] [2020-11-22 13:07:26,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:26,947 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-22 13:07:26,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961713494] [2020-11-22 13:07:26,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:26,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:07:26,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376541594] [2020-11-22 13:07:26,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:07:26,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:26,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:07:26,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:26,949 INFO L87 Difference]: Start difference. First operand 571 states and 779 transitions. Second operand 4 states. [2020-11-22 13:07:27,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:27,541 INFO L93 Difference]: Finished difference Result 1283 states and 1754 transitions. [2020-11-22 13:07:27,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:07:27,541 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-11-22 13:07:27,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:27,546 INFO L225 Difference]: With dead ends: 1283 [2020-11-22 13:07:27,546 INFO L226 Difference]: Without dead ends: 713 [2020-11-22 13:07:27,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:27,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-11-22 13:07:27,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 642. [2020-11-22 13:07:27,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-11-22 13:07:27,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 858 transitions. [2020-11-22 13:07:27,571 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 858 transitions. Word has length 117 [2020-11-22 13:07:27,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:27,571 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 858 transitions. [2020-11-22 13:07:27,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:07:27,572 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 858 transitions. [2020-11-22 13:07:27,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-22 13:07:27,574 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:27,574 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-11-22 13:07:27,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 13:07:27,575 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:27,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:27,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1221455152, now seen corresponding path program 1 times [2020-11-22 13:07:27,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:27,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186387794] [2020-11-22 13:07:27,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:27,714 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-11-22 13:07:27,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186387794] [2020-11-22 13:07:27,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:27,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:07:27,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122388699] [2020-11-22 13:07:27,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:07:27,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:27,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:07:27,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:27,717 INFO L87 Difference]: Start difference. First operand 642 states and 858 transitions. Second operand 4 states. [2020-11-22 13:07:28,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:28,385 INFO L93 Difference]: Finished difference Result 1496 states and 1977 transitions. [2020-11-22 13:07:28,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:07:28,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-11-22 13:07:28,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:28,395 INFO L225 Difference]: With dead ends: 1496 [2020-11-22 13:07:28,395 INFO L226 Difference]: Without dead ends: 855 [2020-11-22 13:07:28,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:28,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-11-22 13:07:28,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2020-11-22 13:07:28,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-11-22 13:07:28,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1022 transitions. [2020-11-22 13:07:28,423 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1022 transitions. Word has length 131 [2020-11-22 13:07:28,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:28,423 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1022 transitions. [2020-11-22 13:07:28,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:07:28,429 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1022 transitions. [2020-11-22 13:07:28,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-11-22 13:07:28,432 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:28,432 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:28,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 13:07:28,433 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:28,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:28,434 INFO L82 PathProgramCache]: Analyzing trace with hash -175178109, now seen corresponding path program 1 times [2020-11-22 13:07:28,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:28,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136298091] [2020-11-22 13:07:28,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:28,616 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-22 13:07:28,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136298091] [2020-11-22 13:07:28,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:28,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:07:28,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142506962] [2020-11-22 13:07:28,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:07:28,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:28,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:07:28,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:28,619 INFO L87 Difference]: Start difference. First operand 784 states and 1022 transitions. Second operand 3 states. [2020-11-22 13:07:29,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:29,069 INFO L93 Difference]: Finished difference Result 1709 states and 2196 transitions. [2020-11-22 13:07:29,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:07:29,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-11-22 13:07:29,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:29,076 INFO L225 Difference]: With dead ends: 1709 [2020-11-22 13:07:29,077 INFO L226 Difference]: Without dead ends: 926 [2020-11-22 13:07:29,080 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 [2020-11-22 13:07:29,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-11-22 13:07:29,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 784. [2020-11-22 13:07:29,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-11-22 13:07:29,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1016 transitions. [2020-11-22 13:07:29,110 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1016 transitions. Word has length 148 [2020-11-22 13:07:29,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:29,112 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1016 transitions. [2020-11-22 13:07:29,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:07:29,113 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1016 transitions. [2020-11-22 13:07:29,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-11-22 13:07:29,116 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:29,117 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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, 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] [2020-11-22 13:07:29,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 13:07:29,117 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:29,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:29,118 INFO L82 PathProgramCache]: Analyzing trace with hash 316521451, now seen corresponding path program 1 times [2020-11-22 13:07:29,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:29,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878323850] [2020-11-22 13:07:29,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:29,418 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-22 13:07:29,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878323850] [2020-11-22 13:07:29,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:29,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:07:29,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659215052] [2020-11-22 13:07:29,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:07:29,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:29,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:07:29,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:29,421 INFO L87 Difference]: Start difference. First operand 784 states and 1016 transitions. Second operand 4 states. [2020-11-22 13:07:29,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:29,958 INFO L93 Difference]: Finished difference Result 1733 states and 2208 transitions. [2020-11-22 13:07:29,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:07:29,959 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2020-11-22 13:07:29,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:29,965 INFO L225 Difference]: With dead ends: 1733 [2020-11-22 13:07:29,966 INFO L226 Difference]: Without dead ends: 950 [2020-11-22 13:07:29,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:29,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2020-11-22 13:07:29,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 855. [2020-11-22 13:07:29,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-11-22 13:07:29,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1055 transitions. [2020-11-22 13:07:29,997 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1055 transitions. Word has length 191 [2020-11-22 13:07:29,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:29,999 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1055 transitions. [2020-11-22 13:07:29,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:07:29,999 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1055 transitions. [2020-11-22 13:07:30,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-11-22 13:07:30,003 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:30,004 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 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, 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] [2020-11-22 13:07:30,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 13:07:30,006 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:30,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:30,007 INFO L82 PathProgramCache]: Analyzing trace with hash -942294812, now seen corresponding path program 1 times [2020-11-22 13:07:30,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:30,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108099223] [2020-11-22 13:07:30,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:30,167 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-11-22 13:07:30,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108099223] [2020-11-22 13:07:30,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:30,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:07:30,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040849597] [2020-11-22 13:07:30,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:07:30,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:30,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:07:30,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:30,176 INFO L87 Difference]: Start difference. First operand 855 states and 1055 transitions. Second operand 3 states. [2020-11-22 13:07:30,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:30,572 INFO L93 Difference]: Finished difference Result 1851 states and 2332 transitions. [2020-11-22 13:07:30,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:07:30,573 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2020-11-22 13:07:30,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:30,579 INFO L225 Difference]: With dead ends: 1851 [2020-11-22 13:07:30,579 INFO L226 Difference]: Without dead ends: 997 [2020-11-22 13:07:30,581 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 [2020-11-22 13:07:30,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-11-22 13:07:30,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2020-11-22 13:07:30,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-11-22 13:07:30,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1230 transitions. [2020-11-22 13:07:30,612 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1230 transitions. Word has length 204 [2020-11-22 13:07:30,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:30,613 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1230 transitions. [2020-11-22 13:07:30,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:07:30,613 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1230 transitions. [2020-11-22 13:07:30,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-11-22 13:07:30,620 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:30,621 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-11-22 13:07:30,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-22 13:07:30,621 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:30,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:30,622 INFO L82 PathProgramCache]: Analyzing trace with hash 413840402, now seen corresponding path program 1 times [2020-11-22 13:07:30,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:30,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657629014] [2020-11-22 13:07:30,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:31,036 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 143 proven. 86 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-11-22 13:07:31,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657629014] [2020-11-22 13:07:31,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436944285] [2020-11-22 13:07:31,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4082b2bd-a1fc-41b9-a4ae-98b610c750ec/bin/utaipan/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 [2020-11-22 13:07:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:31,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:07:31,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:07:31,402 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-11-22 13:07:31,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:07:31,492 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-11-22 13:07:31,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 13:07:31,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-22 13:07:31,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807883415] [2020-11-22 13:07:31,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:07:31,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:31,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:07:31,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:07:31,494 INFO L87 Difference]: Start difference. First operand 997 states and 1230 transitions. Second operand 3 states. [2020-11-22 13:07:31,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:31,951 INFO L93 Difference]: Finished difference Result 2277 states and 2817 transitions. [2020-11-22 13:07:31,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:07:31,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 216 [2020-11-22 13:07:31,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:31,961 INFO L225 Difference]: With dead ends: 2277 [2020-11-22 13:07:31,961 INFO L226 Difference]: Without dead ends: 1281 [2020-11-22 13:07:31,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 430 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:07:31,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-11-22 13:07:32,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1068. [2020-11-22 13:07:32,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-11-22 13:07:32,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1322 transitions. [2020-11-22 13:07:32,008 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1322 transitions. Word has length 216 [2020-11-22 13:07:32,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:32,009 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1322 transitions. [2020-11-22 13:07:32,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:07:32,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1322 transitions. [2020-11-22 13:07:32,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-11-22 13:07:32,014 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:32,014 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 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, 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] [2020-11-22 13:07:32,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-22 13:07:32,241 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:32,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:32,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1182837770, now seen corresponding path program 1 times [2020-11-22 13:07:32,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:32,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851230960] [2020-11-22 13:07:32,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:32,612 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 62 proven. 221 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-22 13:07:32,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851230960] [2020-11-22 13:07:32,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771270872] [2020-11-22 13:07:32,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4082b2bd-a1fc-41b9-a4ae-98b610c750ec/bin/utaipan/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 [2020-11-22 13:07:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:32,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:07:32,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:07:32,911 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-11-22 13:07:32,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:07:32,973 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-11-22 13:07:32,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 13:07:32,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2020-11-22 13:07:32,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370042972] [2020-11-22 13:07:32,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:07:32,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:32,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:07:32,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:07:32,977 INFO L87 Difference]: Start difference. First operand 1068 states and 1322 transitions. Second operand 3 states. [2020-11-22 13:07:33,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:33,480 INFO L93 Difference]: Finished difference Result 2133 states and 2642 transitions. [2020-11-22 13:07:33,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:07:33,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 222 [2020-11-22 13:07:33,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:33,482 INFO L225 Difference]: With dead ends: 2133 [2020-11-22 13:07:33,482 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:07:33,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 442 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:07:33,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:07:33,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:07:33,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:07:33,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:07:33,485 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 222 [2020-11-22 13:07:33,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:33,485 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:07:33,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:07:33,486 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:07:33,486 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:07:33,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:07:33,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:07:33,975 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2020-11-22 13:07:34,110 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2020-11-22 13:07:34,113 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-22 13:07:34,113 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-22 13:07:34,113 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-22 13:07:34,114 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-22 13:07:34,114 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-22 13:07:34,114 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-22 13:07:34,114 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-22 13:07:34,114 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-22 13:07:34,114 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-22 13:07:34,114 INFO L274 CegarLoopResult]: For program point L569-1(lines 40 585) no Hoare annotation was computed. [2020-11-22 13:07:34,114 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-22 13:07:34,114 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-22 13:07:34,114 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-22 13:07:34,114 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-22 13:07:34,114 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-22 13:07:34,114 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-22 13:07:34,114 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-22 13:07:34,114 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-22 13:07:34,115 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-22 13:07:34,115 INFO L274 CegarLoopResult]: For program point L572-1(lines 40 585) no Hoare annotation was computed. [2020-11-22 13:07:34,115 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-22 13:07:34,115 INFO L274 CegarLoopResult]: For program point L573(line 573) no Hoare annotation was computed. [2020-11-22 13:07:34,115 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-22 13:07:34,115 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-22 13:07:34,115 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-22 13:07:34,115 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-22 13:07:34,115 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-22 13:07:34,115 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-22 13:07:34,115 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-22 13:07:34,115 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-22 13:07:34,115 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-22 13:07:34,115 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-22 13:07:34,115 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-22 13:07:34,115 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-22 13:07:34,116 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-22 13:07:34,116 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-22 13:07:34,116 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-22 13:07:34,116 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-22 13:07:34,116 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-22 13:07:34,116 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:07:34,116 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-22 13:07:34,116 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-22 13:07:34,116 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-22 13:07:34,117 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (<= 14 ~a8~0)) (.cse3 (= ~a20~0 1)) (.cse1 (= ~a16~0 6)) (.cse2 (not (= ~a7~0 1))) (.cse4 (<= ~a16~0 5)) (.cse5 (<= ~a21~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse2) (and .cse0 .cse4) (and (= ~a21~0 1) (= ~a12~0 8) (= ~a8~0 13) .cse3 (= ~a16~0 4) (= ~a17~0 1)) (and .cse1 .cse5) (and .cse4 .cse2) (and .cse4 .cse5))) [2020-11-22 13:07:34,117 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-22 13:07:34,117 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-22 13:07:34,117 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-22 13:07:34,117 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-22 13:07:34,117 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-22 13:07:34,117 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-22 13:07:34,117 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-22 13:07:34,117 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:07:34,117 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-22 13:07:34,117 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-22 13:07:34,117 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-22 13:07:34,117 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-22 13:07:34,117 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-22 13:07:34,118 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-22 13:07:34,118 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-22 13:07:34,118 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-22 13:07:34,118 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-22 13:07:34,118 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-22 13:07:34,118 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-22 13:07:34,118 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-22 13:07:34,118 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-22 13:07:34,118 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-22 13:07:34,118 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-22 13:07:34,118 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (<= 14 ~a8~0)) (.cse3 (= ~a20~0 1)) (.cse1 (= ~a16~0 6)) (.cse2 (not (= ~a7~0 1))) (.cse4 (<= ~a16~0 5)) (.cse5 (<= ~a21~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse2) (and .cse0 .cse4) (and (= ~a21~0 1) (= ~a12~0 8) (= ~a8~0 13) .cse3 (= ~a16~0 4) (= ~a17~0 1)) (and .cse1 .cse5) (and .cse4 .cse2) (and .cse4 .cse5))) [2020-11-22 13:07:34,118 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-22 13:07:34,119 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 13:07:34,119 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-22 13:07:34,119 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-22 13:07:34,119 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-22 13:07:34,119 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-22 13:07:34,119 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-22 13:07:34,119 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-22 13:07:34,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:07:34 BoogieIcfgContainer [2020-11-22 13:07:34,145 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:07:34,146 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:07:34,146 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:07:34,146 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:07:34,147 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:07:22" (3/4) ... [2020-11-22 13:07:34,149 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:07:34,169 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-11-22 13:07:34,171 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2020-11-22 13:07:34,173 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-22 13:07:34,174 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-22 13:07:34,292 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4082b2bd-a1fc-41b9-a4ae-98b610c750ec/bin/utaipan/witness.graphml [2020-11-22 13:07:34,292 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:07:34,293 INFO L168 Benchmark]: Toolchain (without parser) took 15892.30 ms. Allocated memory was 102.8 MB in the beginning and 364.9 MB in the end (delta: 262.1 MB). Free memory was 71.1 MB in the beginning and 284.5 MB in the end (delta: -213.3 MB). Peak memory consumption was 47.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:34,293 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 102.8 MB. Free memory was 62.2 MB in the beginning and 62.2 MB in the end (delta: 61.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:07:34,293 INFO L168 Benchmark]: CACSL2BoogieTranslator took 819.18 ms. Allocated memory is still 102.8 MB. Free memory was 70.8 MB in the beginning and 62.2 MB in the end (delta: 8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:34,294 INFO L168 Benchmark]: Boogie Procedure Inliner took 129.69 ms. Allocated memory is still 102.8 MB. Free memory was 62.2 MB in the beginning and 56.4 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:34,294 INFO L168 Benchmark]: Boogie Preprocessor took 123.72 ms. Allocated memory is still 102.8 MB. Free memory was 56.4 MB in the beginning and 52.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:34,295 INFO L168 Benchmark]: RCFGBuilder took 2758.07 ms. Allocated memory was 102.8 MB in the beginning and 125.8 MB in the end (delta: 23.1 MB). Free memory was 52.2 MB in the beginning and 59.7 MB in the end (delta: -7.5 MB). Peak memory consumption was 40.9 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:34,295 INFO L168 Benchmark]: TraceAbstraction took 11908.85 ms. Allocated memory was 125.8 MB in the beginning and 364.9 MB in the end (delta: 239.1 MB). Free memory was 59.7 MB in the beginning and 300.2 MB in the end (delta: -240.4 MB). Peak memory consumption was 181.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:34,295 INFO L168 Benchmark]: Witness Printer took 145.90 ms. Allocated memory is still 364.9 MB. Free memory was 300.2 MB in the beginning and 284.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:34,297 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 102.8 MB. Free memory was 62.2 MB in the beginning and 62.2 MB in the end (delta: 61.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 819.18 ms. Allocated memory is still 102.8 MB. Free memory was 70.8 MB in the beginning and 62.2 MB in the end (delta: 8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 129.69 ms. Allocated memory is still 102.8 MB. Free memory was 62.2 MB in the beginning and 56.4 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 123.72 ms. Allocated memory is still 102.8 MB. Free memory was 56.4 MB in the beginning and 52.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2758.07 ms. Allocated memory was 102.8 MB in the beginning and 125.8 MB in the end (delta: 23.1 MB). Free memory was 52.2 MB in the beginning and 59.7 MB in the end (delta: -7.5 MB). Peak memory consumption was 40.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11908.85 ms. Allocated memory was 125.8 MB in the beginning and 364.9 MB in the end (delta: 239.1 MB). Free memory was 59.7 MB in the beginning and 300.2 MB in the end (delta: -240.4 MB). Peak memory consumption was 181.1 MB. Max. memory is 16.1 GB. * Witness Printer took 145.90 ms. Allocated memory is still 364.9 MB. Free memory was 300.2 MB in the beginning and 284.5 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: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((14 <= a8 && a16 == 6) && !(a7 == 1)) || (a20 == 1 && !(a7 == 1))) || (14 <= a8 && a16 <= 5)) || (((((a21 == 1 && a12 == 8) && a8 == 13) && a20 == 1) && a16 == 4) && a17 == 1)) || (a16 == 6 && a21 <= 0)) || (a16 <= 5 && !(a7 == 1))) || (a16 <= 5 && a21 <= 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((14 <= a8 && a16 == 6) && !(a7 == 1)) || (a20 == 1 && !(a7 == 1))) || (14 <= a8 && a16 <= 5)) || (((((a21 == 1 && a12 == 8) && a8 == 13) && a20 == 1) && a16 == 4) && a17 == 1)) || (a16 == 6 && a21 <= 0)) || (a16 <= 5 && !(a7 == 1))) || (a16 <= 5 && a21 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.3s, OverallIterations: 11, TraceHistogramMax: 7, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 569 SDtfs, 1033 SDslu, 68 SDs, 0 SdLazy, 2845 SolverSat, 748 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 913 GetRequests, 886 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 734 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 38 NumberOfFragments, 137 HoareAnnotationTreeSize, 3 FomulaSimplifications, 6832 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 2013 NumberOfCodeBlocks, 2013 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2436 ConstructedInterpolants, 0 QuantifiedInterpolants, 1743077 SizeOfPredicates, 2 NumberOfNonLiveVariables, 990 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 2421/2728 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...