./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.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_c5737c28-f525-408d-87e0-3eeebd0d9feb/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c5737c28-f525-408d-87e0-3eeebd0d9feb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c5737c28-f525-408d-87e0-3eeebd0d9feb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c5737c28-f525-408d-87e0-3eeebd0d9feb/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c5737c28-f525-408d-87e0-3eeebd0d9feb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c5737c28-f525-408d-87e0-3eeebd0d9feb/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 4b3c25b2e1855c4c0a30872aa894c42326e9c019 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:29:47,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:29:47,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:29:47,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:29:47,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:29:47,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:29:47,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:29:47,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:29:47,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:29:47,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:29:47,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:29:47,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:29:47,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:29:47,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:29:47,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:29:47,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:29:47,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:29:47,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:29:47,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:29:47,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:29:47,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:29:47,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:29:47,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:29:47,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:29:47,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:29:47,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:29:47,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:29:47,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:29:47,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:29:47,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:29:47,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:29:47,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:29:47,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:29:47,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:29:47,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:29:47,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:29:47,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:29:47,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:29:47,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:29:47,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:29:47,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:29:47,190 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c5737c28-f525-408d-87e0-3eeebd0d9feb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:29:47,236 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:29:47,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:29:47,238 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:29:47,238 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:29:47,239 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:29:47,239 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:29:47,239 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:29:47,240 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:29:47,240 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:29:47,240 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:29:47,241 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:29:47,242 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:29:47,242 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:29:47,242 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:29:47,242 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:29:47,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:29:47,244 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:29:47,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:29:47,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:29:47,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:29:47,245 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:29:47,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:29:47,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:29:47,245 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:29:47,246 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:29:47,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:29:47,246 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:29:47,246 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:29:47,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:29:47,247 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:29:47,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:29:47,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:29:47,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:29:47,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:29:47,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:29:47,249 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:29:47,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:29:47,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:29:47,250 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:29:47,250 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:29:47,250 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_c5737c28-f525-408d-87e0-3eeebd0d9feb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c5737c28-f525-408d-87e0-3eeebd0d9feb/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b3c25b2e1855c4c0a30872aa894c42326e9c019 [2020-11-28 07:29:47,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:29:47,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:29:47,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:29:47,572 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:29:47,573 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:29:47,574 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c5737c28-f525-408d-87e0-3eeebd0d9feb/bin/utaipan/../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-11-28 07:29:47,641 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c5737c28-f525-408d-87e0-3eeebd0d9feb/bin/utaipan/data/cf0946b90/7b5f91685c794f3d850fae50979da5c7/FLAG199d13e0e [2020-11-28 07:29:48,204 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:29:48,210 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c5737c28-f525-408d-87e0-3eeebd0d9feb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-11-28 07:29:48,220 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c5737c28-f525-408d-87e0-3eeebd0d9feb/bin/utaipan/data/cf0946b90/7b5f91685c794f3d850fae50979da5c7/FLAG199d13e0e [2020-11-28 07:29:48,500 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c5737c28-f525-408d-87e0-3eeebd0d9feb/bin/utaipan/data/cf0946b90/7b5f91685c794f3d850fae50979da5c7 [2020-11-28 07:29:48,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:29:48,504 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:29:48,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:29:48,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:29:48,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:29:48,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:29:48" (1/1) ... [2020-11-28 07:29:48,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6673e28a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:48, skipping insertion in model container [2020-11-28 07:29:48,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:29:48" (1/1) ... [2020-11-28 07:29:48,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:29:48,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:29:48,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:29:48,884 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:29:49,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:29:49,035 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:29:49,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:49 WrapperNode [2020-11-28 07:29:49,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:29:49,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:29:49,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:29:49,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:29:49,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:49" (1/1) ... [2020-11-28 07:29:49,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:49" (1/1) ... [2020-11-28 07:29:49,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:29:49,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:29:49,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:29:49,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:29:49,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:49" (1/1) ... [2020-11-28 07:29:49,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:49" (1/1) ... [2020-11-28 07:29:49,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:49" (1/1) ... [2020-11-28 07:29:49,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:49" (1/1) ... [2020-11-28 07:29:49,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:49" (1/1) ... [2020-11-28 07:29:49,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:49" (1/1) ... [2020-11-28 07:29:49,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:49" (1/1) ... [2020-11-28 07:29:49,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:29:49,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:29:49,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:29:49,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:29:49,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5737c28-f525-408d-87e0-3eeebd0d9feb/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 [2020-11-28 07:29:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:29:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:29:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:29:49,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:29:50,314 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:29:50,314 INFO L298 CfgBuilder]: Removed 36 assume(true) statements. [2020-11-28 07:29:50,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:29:50 BoogieIcfgContainer [2020-11-28 07:29:50,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:29:50,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:29:50,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:29:50,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:29:50,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:29:48" (1/3) ... [2020-11-28 07:29:50,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d305f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:29:50, skipping insertion in model container [2020-11-28 07:29:50,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:49" (2/3) ... [2020-11-28 07:29:50,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d305f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:29:50, skipping insertion in model container [2020-11-28 07:29:50,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:29:50" (3/3) ... [2020-11-28 07:29:50,325 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.p+lhb-reducer.c [2020-11-28 07:29:50,336 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:29:50,341 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-11-28 07:29:50,353 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-11-28 07:29:50,378 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:29:50,379 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:29:50,379 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:29:50,379 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:29:50,379 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:29:50,379 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:29:50,380 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:29:50,380 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:29:50,400 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states. [2020-11-28 07:29:50,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:29:50,405 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:50,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:29:50,406 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:50,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:50,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1720831082, now seen corresponding path program 1 times [2020-11-28 07:29:50,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:50,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522550577] [2020-11-28 07:29:50,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:50,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:50,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522550577] [2020-11-28 07:29:50,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:50,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:29:50,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088772313] [2020-11-28 07:29:50,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:29:50,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:50,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:29:50,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:29:50,714 INFO L87 Difference]: Start difference. First operand 118 states. Second operand 4 states. [2020-11-28 07:29:51,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:51,106 INFO L93 Difference]: Finished difference Result 126 states and 200 transitions. [2020-11-28 07:29:51,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:29:51,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-28 07:29:51,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:51,131 INFO L225 Difference]: With dead ends: 126 [2020-11-28 07:29:51,136 INFO L226 Difference]: Without dead ends: 113 [2020-11-28 07:29:51,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:29:51,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-11-28 07:29:51,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-11-28 07:29:51,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-28 07:29:51,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 134 transitions. [2020-11-28 07:29:51,218 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 134 transitions. Word has length 6 [2020-11-28 07:29:51,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:51,220 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 134 transitions. [2020-11-28 07:29:51,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:29:51,220 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 134 transitions. [2020-11-28 07:29:51,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:29:51,221 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:51,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:51,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:29:51,222 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:51,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:51,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1806162027, now seen corresponding path program 1 times [2020-11-28 07:29:51,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:51,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392775850] [2020-11-28 07:29:51,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:51,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:51,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392775850] [2020-11-28 07:29:51,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:51,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:29:51,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247229900] [2020-11-28 07:29:51,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:29:51,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:51,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:29:51,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:29:51,354 INFO L87 Difference]: Start difference. First operand 113 states and 134 transitions. Second operand 5 states. [2020-11-28 07:29:51,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:51,714 INFO L93 Difference]: Finished difference Result 116 states and 137 transitions. [2020-11-28 07:29:51,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:29:51,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-11-28 07:29:51,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:51,717 INFO L225 Difference]: With dead ends: 116 [2020-11-28 07:29:51,717 INFO L226 Difference]: Without dead ends: 108 [2020-11-28 07:29:51,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:29:51,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-11-28 07:29:51,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-11-28 07:29:51,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-11-28 07:29:51,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 120 transitions. [2020-11-28 07:29:51,730 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 120 transitions. Word has length 7 [2020-11-28 07:29:51,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:51,731 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 120 transitions. [2020-11-28 07:29:51,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:29:51,731 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 120 transitions. [2020-11-28 07:29:51,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:29:51,732 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:51,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:51,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:29:51,732 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:51,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:51,733 INFO L82 PathProgramCache]: Analyzing trace with hash 236410579, now seen corresponding path program 1 times [2020-11-28 07:29:51,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:51,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44120559] [2020-11-28 07:29:51,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:51,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:51,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44120559] [2020-11-28 07:29:51,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:51,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:29:51,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925677001] [2020-11-28 07:29:51,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:29:51,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:51,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:29:51,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:29:51,835 INFO L87 Difference]: Start difference. First operand 108 states and 120 transitions. Second operand 5 states. [2020-11-28 07:29:52,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:52,144 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2020-11-28 07:29:52,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:29:52,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 07:29:52,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:52,146 INFO L225 Difference]: With dead ends: 108 [2020-11-28 07:29:52,146 INFO L226 Difference]: Without dead ends: 106 [2020-11-28 07:29:52,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:29:52,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-11-28 07:29:52,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-11-28 07:29:52,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-11-28 07:29:52,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 118 transitions. [2020-11-28 07:29:52,155 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 118 transitions. Word has length 10 [2020-11-28 07:29:52,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:52,155 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 118 transitions. [2020-11-28 07:29:52,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:29:52,155 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 118 transitions. [2020-11-28 07:29:52,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:29:52,156 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:52,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:52,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:29:52,157 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:52,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:52,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1261200566, now seen corresponding path program 1 times [2020-11-28 07:29:52,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:52,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659432140] [2020-11-28 07:29:52,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:52,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:52,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659432140] [2020-11-28 07:29:52,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:52,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:29:52,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468148496] [2020-11-28 07:29:52,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:29:52,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:52,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:29:52,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:29:52,205 INFO L87 Difference]: Start difference. First operand 106 states and 118 transitions. Second operand 4 states. [2020-11-28 07:29:52,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:52,401 INFO L93 Difference]: Finished difference Result 106 states and 118 transitions. [2020-11-28 07:29:52,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:29:52,402 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 07:29:52,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:52,403 INFO L225 Difference]: With dead ends: 106 [2020-11-28 07:29:52,403 INFO L226 Difference]: Without dead ends: 102 [2020-11-28 07:29:52,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:29:52,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-11-28 07:29:52,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-11-28 07:29:52,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-11-28 07:29:52,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2020-11-28 07:29:52,413 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 11 [2020-11-28 07:29:52,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:52,414 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2020-11-28 07:29:52,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:29:52,414 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2020-11-28 07:29:52,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:29:52,415 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:52,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:52,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:29:52,416 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:52,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:52,416 INFO L82 PathProgramCache]: Analyzing trace with hash -423610358, now seen corresponding path program 1 times [2020-11-28 07:29:52,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:52,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620375366] [2020-11-28 07:29:52,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:52,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:52,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620375366] [2020-11-28 07:29:52,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:52,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:29:52,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266096189] [2020-11-28 07:29:52,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:29:52,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:52,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:29:52,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:29:52,522 INFO L87 Difference]: Start difference. First operand 102 states and 114 transitions. Second operand 5 states. [2020-11-28 07:29:52,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:52,888 INFO L93 Difference]: Finished difference Result 120 states and 134 transitions. [2020-11-28 07:29:52,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:29:52,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 07:29:52,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:52,890 INFO L225 Difference]: With dead ends: 120 [2020-11-28 07:29:52,890 INFO L226 Difference]: Without dead ends: 118 [2020-11-28 07:29:52,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:29:52,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-11-28 07:29:52,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 100. [2020-11-28 07:29:52,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-11-28 07:29:52,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2020-11-28 07:29:52,898 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 12 [2020-11-28 07:29:52,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:52,898 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2020-11-28 07:29:52,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:29:52,898 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2020-11-28 07:29:52,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:29:52,899 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:52,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:52,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:29:52,899 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:52,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:52,900 INFO L82 PathProgramCache]: Analyzing trace with hash -421517046, now seen corresponding path program 1 times [2020-11-28 07:29:52,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:52,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243945960] [2020-11-28 07:29:52,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:52,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:52,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243945960] [2020-11-28 07:29:52,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:52,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:29:52,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044879406] [2020-11-28 07:29:52,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:29:52,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:52,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:29:52,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:29:52,989 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand 5 states. [2020-11-28 07:29:53,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:53,282 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2020-11-28 07:29:53,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:29:53,282 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 07:29:53,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:53,284 INFO L225 Difference]: With dead ends: 100 [2020-11-28 07:29:53,284 INFO L226 Difference]: Without dead ends: 98 [2020-11-28 07:29:53,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:29:53,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-28 07:29:53,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-11-28 07:29:53,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-11-28 07:29:53,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 110 transitions. [2020-11-28 07:29:53,299 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 110 transitions. Word has length 12 [2020-11-28 07:29:53,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:53,300 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 110 transitions. [2020-11-28 07:29:53,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:29:53,300 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 110 transitions. [2020-11-28 07:29:53,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:29:53,307 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:53,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:53,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:29:53,308 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:53,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:53,309 INFO L82 PathProgramCache]: Analyzing trace with hash -245102512, now seen corresponding path program 1 times [2020-11-28 07:29:53,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:53,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854331746] [2020-11-28 07:29:53,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:53,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:53,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854331746] [2020-11-28 07:29:53,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:53,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:29:53,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879301562] [2020-11-28 07:29:53,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:29:53,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:53,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:29:53,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:29:53,387 INFO L87 Difference]: Start difference. First operand 98 states and 110 transitions. Second operand 5 states. [2020-11-28 07:29:53,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:53,696 INFO L93 Difference]: Finished difference Result 119 states and 133 transitions. [2020-11-28 07:29:53,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:29:53,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 07:29:53,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:53,698 INFO L225 Difference]: With dead ends: 119 [2020-11-28 07:29:53,699 INFO L226 Difference]: Without dead ends: 117 [2020-11-28 07:29:53,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:29:53,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-11-28 07:29:53,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 96. [2020-11-28 07:29:53,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-28 07:29:53,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 108 transitions. [2020-11-28 07:29:53,707 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 108 transitions. Word has length 13 [2020-11-28 07:29:53,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:53,707 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 108 transitions. [2020-11-28 07:29:53,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:29:53,707 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 108 transitions. [2020-11-28 07:29:53,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:29:53,708 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:53,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:53,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:29:53,708 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:53,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:53,709 INFO L82 PathProgramCache]: Analyzing trace with hash -247013107, now seen corresponding path program 1 times [2020-11-28 07:29:53,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:53,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394456214] [2020-11-28 07:29:53,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:53,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:53,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394456214] [2020-11-28 07:29:53,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:53,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:29:53,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782624385] [2020-11-28 07:29:53,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:29:53,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:53,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:29:53,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:29:53,899 INFO L87 Difference]: Start difference. First operand 96 states and 108 transitions. Second operand 6 states. [2020-11-28 07:29:54,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:54,176 INFO L93 Difference]: Finished difference Result 129 states and 145 transitions. [2020-11-28 07:29:54,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:29:54,178 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-28 07:29:54,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:54,179 INFO L225 Difference]: With dead ends: 129 [2020-11-28 07:29:54,179 INFO L226 Difference]: Without dead ends: 127 [2020-11-28 07:29:54,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:29:54,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-11-28 07:29:54,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 102. [2020-11-28 07:29:54,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-11-28 07:29:54,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 116 transitions. [2020-11-28 07:29:54,185 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 116 transitions. Word has length 13 [2020-11-28 07:29:54,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:54,185 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 116 transitions. [2020-11-28 07:29:54,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:29:54,186 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 116 transitions. [2020-11-28 07:29:54,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:29:54,186 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:54,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:54,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:29:54,187 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:54,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:54,187 INFO L82 PathProgramCache]: Analyzing trace with hash -182120367, now seen corresponding path program 1 times [2020-11-28 07:29:54,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:54,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525936399] [2020-11-28 07:29:54,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:54,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:54,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525936399] [2020-11-28 07:29:54,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:54,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:29:54,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165798979] [2020-11-28 07:29:54,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:29:54,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:54,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:29:54,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:29:54,367 INFO L87 Difference]: Start difference. First operand 102 states and 116 transitions. Second operand 6 states. [2020-11-28 07:29:54,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:54,675 INFO L93 Difference]: Finished difference Result 112 states and 126 transitions. [2020-11-28 07:29:54,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:29:54,675 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-28 07:29:54,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:54,676 INFO L225 Difference]: With dead ends: 112 [2020-11-28 07:29:54,676 INFO L226 Difference]: Without dead ends: 108 [2020-11-28 07:29:54,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:29:54,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-11-28 07:29:54,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 103. [2020-11-28 07:29:54,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-11-28 07:29:54,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 117 transitions. [2020-11-28 07:29:54,682 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 117 transitions. Word has length 13 [2020-11-28 07:29:54,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:54,683 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 117 transitions. [2020-11-28 07:29:54,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:29:54,683 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 117 transitions. [2020-11-28 07:29:54,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 07:29:54,684 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:54,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:54,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:29:54,684 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:54,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:54,685 INFO L82 PathProgramCache]: Analyzing trace with hash 991762866, now seen corresponding path program 1 times [2020-11-28 07:29:54,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:54,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286336353] [2020-11-28 07:29:54,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:54,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:54,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286336353] [2020-11-28 07:29:54,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:54,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:29:54,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748131147] [2020-11-28 07:29:54,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:29:54,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:54,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:29:54,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:29:54,824 INFO L87 Difference]: Start difference. First operand 103 states and 117 transitions. Second operand 6 states. [2020-11-28 07:29:55,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:55,086 INFO L93 Difference]: Finished difference Result 130 states and 146 transitions. [2020-11-28 07:29:55,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:29:55,086 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-28 07:29:55,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:55,087 INFO L225 Difference]: With dead ends: 130 [2020-11-28 07:29:55,087 INFO L226 Difference]: Without dead ends: 128 [2020-11-28 07:29:55,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:29:55,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-11-28 07:29:55,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 106. [2020-11-28 07:29:55,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-11-28 07:29:55,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2020-11-28 07:29:55,091 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 14 [2020-11-28 07:29:55,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:55,091 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2020-11-28 07:29:55,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:29:55,091 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2020-11-28 07:29:55,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 07:29:55,092 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:55,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:55,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 07:29:55,093 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:55,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:55,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1156204912, now seen corresponding path program 1 times [2020-11-28 07:29:55,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:55,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017403102] [2020-11-28 07:29:55,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:55,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:55,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017403102] [2020-11-28 07:29:55,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:55,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:29:55,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834737680] [2020-11-28 07:29:55,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:29:55,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:55,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:29:55,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:29:55,159 INFO L87 Difference]: Start difference. First operand 106 states and 120 transitions. Second operand 4 states. [2020-11-28 07:29:55,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:55,300 INFO L93 Difference]: Finished difference Result 106 states and 120 transitions. [2020-11-28 07:29:55,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:29:55,300 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-28 07:29:55,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:55,301 INFO L225 Difference]: With dead ends: 106 [2020-11-28 07:29:55,301 INFO L226 Difference]: Without dead ends: 104 [2020-11-28 07:29:55,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:29:55,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-11-28 07:29:55,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-11-28 07:29:55,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-11-28 07:29:55,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 118 transitions. [2020-11-28 07:29:55,305 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 118 transitions. Word has length 15 [2020-11-28 07:29:55,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:55,305 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 118 transitions. [2020-11-28 07:29:55,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:29:55,305 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 118 transitions. [2020-11-28 07:29:55,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 07:29:55,306 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:55,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:55,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 07:29:55,306 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:55,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:55,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1482607780, now seen corresponding path program 1 times [2020-11-28 07:29:55,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:55,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357084897] [2020-11-28 07:29:55,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:55,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:55,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357084897] [2020-11-28 07:29:55,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:55,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:29:55,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090733708] [2020-11-28 07:29:55,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:29:55,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:55,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:29:55,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:29:55,373 INFO L87 Difference]: Start difference. First operand 104 states and 118 transitions. Second operand 4 states. [2020-11-28 07:29:55,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:55,544 INFO L93 Difference]: Finished difference Result 104 states and 118 transitions. [2020-11-28 07:29:55,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:29:55,545 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-28 07:29:55,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:55,546 INFO L225 Difference]: With dead ends: 104 [2020-11-28 07:29:55,546 INFO L226 Difference]: Without dead ends: 100 [2020-11-28 07:29:55,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:29:55,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-11-28 07:29:55,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-11-28 07:29:55,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-11-28 07:29:55,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-11-28 07:29:55,551 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 16 [2020-11-28 07:29:55,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:55,551 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-11-28 07:29:55,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:29:55,551 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-11-28 07:29:55,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 07:29:55,552 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:55,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:55,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-28 07:29:55,552 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:55,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:55,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1302675821, now seen corresponding path program 1 times [2020-11-28 07:29:55,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:55,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955541641] [2020-11-28 07:29:55,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:55,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:55,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955541641] [2020-11-28 07:29:55,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:55,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:29:55,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583382718] [2020-11-28 07:29:55,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:29:55,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:55,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:29:55,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:29:55,650 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 6 states. [2020-11-28 07:29:55,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:55,935 INFO L93 Difference]: Finished difference Result 116 states and 132 transitions. [2020-11-28 07:29:55,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:29:55,935 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-28 07:29:55,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:55,936 INFO L225 Difference]: With dead ends: 116 [2020-11-28 07:29:55,937 INFO L226 Difference]: Without dead ends: 114 [2020-11-28 07:29:55,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:29:55,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-11-28 07:29:55,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 95. [2020-11-28 07:29:55,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-11-28 07:29:55,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2020-11-28 07:29:55,942 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 17 [2020-11-28 07:29:55,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:55,943 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2020-11-28 07:29:55,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:29:55,943 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2020-11-28 07:29:55,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 07:29:55,945 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:55,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:55,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-28 07:29:55,945 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:55,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:55,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1565723134, now seen corresponding path program 1 times [2020-11-28 07:29:55,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:55,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269203918] [2020-11-28 07:29:55,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:56,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:56,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269203918] [2020-11-28 07:29:56,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:56,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:29:56,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414599052] [2020-11-28 07:29:56,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:29:56,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:56,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:29:56,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:29:56,083 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand 6 states. [2020-11-28 07:29:56,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:56,389 INFO L93 Difference]: Finished difference Result 108 states and 124 transitions. [2020-11-28 07:29:56,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:29:56,390 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-28 07:29:56,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:56,391 INFO L225 Difference]: With dead ends: 108 [2020-11-28 07:29:56,391 INFO L226 Difference]: Without dead ends: 106 [2020-11-28 07:29:56,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:29:56,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-11-28 07:29:56,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 90. [2020-11-28 07:29:56,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-11-28 07:29:56,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2020-11-28 07:29:56,395 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 17 [2020-11-28 07:29:56,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:56,395 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2020-11-28 07:29:56,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:29:56,395 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2020-11-28 07:29:56,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 07:29:56,396 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:56,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:56,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-28 07:29:56,397 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:56,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:56,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1500830394, now seen corresponding path program 1 times [2020-11-28 07:29:56,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:56,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289974466] [2020-11-28 07:29:56,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:56,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:56,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289974466] [2020-11-28 07:29:56,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:56,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:29:56,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244977309] [2020-11-28 07:29:56,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:29:56,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:56,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:29:56,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:29:56,524 INFO L87 Difference]: Start difference. First operand 90 states and 103 transitions. Second operand 6 states. [2020-11-28 07:29:56,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:56,814 INFO L93 Difference]: Finished difference Result 90 states and 103 transitions. [2020-11-28 07:29:56,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:29:56,815 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-28 07:29:56,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:56,816 INFO L225 Difference]: With dead ends: 90 [2020-11-28 07:29:56,816 INFO L226 Difference]: Without dead ends: 53 [2020-11-28 07:29:56,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:29:56,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-28 07:29:56,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-11-28 07:29:56,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-28 07:29:56,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2020-11-28 07:29:56,818 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 17 [2020-11-28 07:29:56,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:56,819 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2020-11-28 07:29:56,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:29:56,819 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2020-11-28 07:29:56,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-28 07:29:56,820 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:56,820 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] [2020-11-28 07:29:56,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-28 07:29:56,821 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:56,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:56,821 INFO L82 PathProgramCache]: Analyzing trace with hash -989602732, now seen corresponding path program 1 times [2020-11-28 07:29:56,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:56,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111060044] [2020-11-28 07:29:56,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:57,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:57,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111060044] [2020-11-28 07:29:57,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:57,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-28 07:29:57,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305387935] [2020-11-28 07:29:57,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 07:29:57,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:57,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 07:29:57,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-11-28 07:29:57,021 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 13 states. [2020-11-28 07:29:57,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:57,253 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2020-11-28 07:29:57,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 07:29:57,254 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-11-28 07:29:57,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:57,255 INFO L225 Difference]: With dead ends: 53 [2020-11-28 07:29:57,255 INFO L226 Difference]: Without dead ends: 51 [2020-11-28 07:29:57,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-11-28 07:29:57,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-28 07:29:57,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-28 07:29:57,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-28 07:29:57,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2020-11-28 07:29:57,258 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 43 [2020-11-28 07:29:57,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:57,259 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2020-11-28 07:29:57,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 07:29:57,259 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2020-11-28 07:29:57,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-28 07:29:57,265 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:57,266 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] [2020-11-28 07:29:57,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-28 07:29:57,266 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:57,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:57,267 INFO L82 PathProgramCache]: Analyzing trace with hash -989582872, now seen corresponding path program 1 times [2020-11-28 07:29:57,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:57,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977403726] [2020-11-28 07:29:57,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:57,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:57,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977403726] [2020-11-28 07:29:57,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:57,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-28 07:29:57,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604362098] [2020-11-28 07:29:57,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 07:29:57,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:57,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 07:29:57,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-11-28 07:29:57,525 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 13 states. [2020-11-28 07:29:57,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:57,726 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2020-11-28 07:29:57,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 07:29:57,726 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-11-28 07:29:57,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:57,727 INFO L225 Difference]: With dead ends: 58 [2020-11-28 07:29:57,727 INFO L226 Difference]: Without dead ends: 56 [2020-11-28 07:29:57,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-11-28 07:29:57,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-28 07:29:57,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2020-11-28 07:29:57,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-28 07:29:57,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2020-11-28 07:29:57,729 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 43 [2020-11-28 07:29:57,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:57,730 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2020-11-28 07:29:57,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 07:29:57,730 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2020-11-28 07:29:57,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-28 07:29:57,731 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:57,731 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] [2020-11-28 07:29:57,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-28 07:29:57,731 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:57,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:57,732 INFO L82 PathProgramCache]: Analyzing trace with hash -612907167, now seen corresponding path program 1 times [2020-11-28 07:29:57,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:57,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814816530] [2020-11-28 07:29:57,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:57,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:57,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814816530] [2020-11-28 07:29:57,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:57,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 07:29:57,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745628675] [2020-11-28 07:29:57,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:29:57,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:57,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:29:57,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:29:57,940 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 7 states. [2020-11-28 07:29:58,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:58,076 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-11-28 07:29:58,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:29:58,077 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-11-28 07:29:58,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:58,078 INFO L225 Difference]: With dead ends: 49 [2020-11-28 07:29:58,078 INFO L226 Difference]: Without dead ends: 45 [2020-11-28 07:29:58,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:29:58,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-28 07:29:58,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-11-28 07:29:58,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-28 07:29:58,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2020-11-28 07:29:58,080 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 44 [2020-11-28 07:29:58,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:58,080 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2020-11-28 07:29:58,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:29:58,081 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2020-11-28 07:29:58,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-28 07:29:58,081 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:58,081 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] [2020-11-28 07:29:58,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-28 07:29:58,083 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:58,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:58,084 INFO L82 PathProgramCache]: Analyzing trace with hash -612291487, now seen corresponding path program 1 times [2020-11-28 07:29:58,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:58,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095158118] [2020-11-28 07:29:58,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:58,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:58,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095158118] [2020-11-28 07:29:58,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:58,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 07:29:58,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699824100] [2020-11-28 07:29:58,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:29:58,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:58,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:29:58,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:29:58,277 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 7 states. [2020-11-28 07:29:58,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:58,405 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-11-28 07:29:58,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:29:58,406 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-11-28 07:29:58,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:58,406 INFO L225 Difference]: With dead ends: 49 [2020-11-28 07:29:58,406 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:29:58,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:29:58,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:29:58,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:29:58,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:29:58,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:29:58,407 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2020-11-28 07:29:58,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:58,407 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:29:58,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:29:58,407 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:29:58,408 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:29:58,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-28 07:29:58,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:29:58,609 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,609 INFO L274 CegarLoopResult]: For program point L597(lines 597 969) no Hoare annotation was computed. [2020-11-28 07:29:58,610 INFO L274 CegarLoopResult]: For program point L366(lines 366 991) no Hoare annotation was computed. [2020-11-28 07:29:58,610 INFO L274 CegarLoopResult]: For program point L267(lines 267 275) no Hoare annotation was computed. [2020-11-28 07:29:58,610 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,610 INFO L274 CegarLoopResult]: For program point L400(lines 400 424) no Hoare annotation was computed. [2020-11-28 07:29:58,610 INFO L274 CegarLoopResult]: For program point L136(lines 136 242) no Hoare annotation was computed. [2020-11-28 07:29:58,610 INFO L274 CegarLoopResult]: For program point L103(lines 103 125) no Hoare annotation was computed. [2020-11-28 07:29:58,610 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,610 INFO L274 CegarLoopResult]: For program point L4-2(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,610 INFO L274 CegarLoopResult]: For program point L929(lines 929 941) no Hoare annotation was computed. [2020-11-28 07:29:58,610 INFO L274 CegarLoopResult]: For program point L4-4(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,610 INFO L274 CegarLoopResult]: For program point L4-6(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,610 INFO L274 CegarLoopResult]: For program point L4-8(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,610 INFO L274 CegarLoopResult]: For program point L4-10(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,610 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,610 INFO L274 CegarLoopResult]: For program point L665(lines 665 963) no Hoare annotation was computed. [2020-11-28 07:29:58,611 INFO L274 CegarLoopResult]: For program point L4-12(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,611 INFO L274 CegarLoopResult]: For program point L4-14(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,611 INFO L274 CegarLoopResult]: For program point L4-16(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,611 INFO L274 CegarLoopResult]: For program point L4-18(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,611 INFO L274 CegarLoopResult]: For program point L434(lines 434 985) no Hoare annotation was computed. [2020-11-28 07:29:58,611 INFO L274 CegarLoopResult]: For program point L4-20(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,611 INFO L274 CegarLoopResult]: For program point L4-22(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,611 INFO L274 CegarLoopResult]: For program point L4-24(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,611 INFO L274 CegarLoopResult]: For program point L4-26(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,611 INFO L274 CegarLoopResult]: For program point L4-28(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,611 INFO L274 CegarLoopResult]: For program point L4-30(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,611 INFO L274 CegarLoopResult]: For program point L468(lines 468 492) no Hoare annotation was computed. [2020-11-28 07:29:58,611 INFO L274 CegarLoopResult]: For program point L171(lines 171 193) no Hoare annotation was computed. [2020-11-28 07:29:58,611 INFO L274 CegarLoopResult]: For program point L72(lines 72 288) no Hoare annotation was computed. [2020-11-28 07:29:58,611 INFO L274 CegarLoopResult]: For program point L733(lines 733 957) no Hoare annotation was computed. [2020-11-28 07:29:58,611 INFO L274 CegarLoopResult]: For program point L502(lines 502 979) no Hoare annotation was computed. [2020-11-28 07:29:58,612 INFO L274 CegarLoopResult]: For program point L205(lines 205 231) no Hoare annotation was computed. [2020-11-28 07:29:58,612 INFO L277 CegarLoopResult]: At program point L932(lines 17 1006) the Hoare annotation is: true [2020-11-28 07:29:58,612 INFO L274 CegarLoopResult]: For program point L866(lines 866 946) no Hoare annotation was computed. [2020-11-28 07:29:58,612 INFO L274 CegarLoopResult]: For program point L536(lines 536 560) no Hoare annotation was computed. [2020-11-28 07:29:58,612 INFO L274 CegarLoopResult]: For program point L801(lines 801 951) no Hoare annotation was computed. [2020-11-28 07:29:58,612 INFO L274 CegarLoopResult]: For program point L570(lines 570 973) no Hoare annotation was computed. [2020-11-28 07:29:58,612 INFO L270 CegarLoopResult]: At program point L868(lines 26 1000) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~main__t~0) (<= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0)) [2020-11-28 07:29:58,612 INFO L274 CegarLoopResult]: For program point L604(lines 604 628) no Hoare annotation was computed. [2020-11-28 07:29:58,612 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,612 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,612 INFO L274 CegarLoopResult]: For program point L638(lines 638 967) no Hoare annotation was computed. [2020-11-28 07:29:58,612 INFO L274 CegarLoopResult]: For program point L143(lines 143 236) no Hoare annotation was computed. [2020-11-28 07:29:58,613 INFO L274 CegarLoopResult]: For program point L672(lines 672 696) no Hoare annotation was computed. [2020-11-28 07:29:58,613 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,613 INFO L274 CegarLoopResult]: For program point L309(lines 309 995) no Hoare annotation was computed. [2020-11-28 07:29:58,613 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,613 INFO L270 CegarLoopResult]: At program point L904(lines 65 999) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~main__t~0) (<= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0)) [2020-11-28 07:29:58,613 INFO L274 CegarLoopResult]: For program point L706(lines 706 961) no Hoare annotation was computed. [2020-11-28 07:29:58,613 INFO L274 CegarLoopResult]: For program point L343(lines 343 354) no Hoare annotation was computed. [2020-11-28 07:29:58,613 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,613 INFO L274 CegarLoopResult]: For program point L46(lines 46 56) no Hoare annotation was computed. [2020-11-28 07:29:58,613 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,613 INFO L277 CegarLoopResult]: At program point L1004(lines 22 1005) the Hoare annotation is: true [2020-11-28 07:29:58,613 INFO L274 CegarLoopResult]: For program point L740(lines 740 764) no Hoare annotation was computed. [2020-11-28 07:29:58,613 INFO L274 CegarLoopResult]: For program point L377(lines 377 989) no Hoare annotation was computed. [2020-11-28 07:29:58,613 INFO L274 CegarLoopResult]: For program point L774(lines 774 955) no Hoare annotation was computed. [2020-11-28 07:29:58,615 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,616 INFO L274 CegarLoopResult]: For program point L411(lines 411 422) no Hoare annotation was computed. [2020-11-28 07:29:58,616 INFO L270 CegarLoopResult]: At program point L940(lines 858 947) the Hoare annotation is: (and (<= 9 ULTIMATE.start_main_~main__t~0) (<= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0)) [2020-11-28 07:29:58,616 INFO L274 CegarLoopResult]: For program point L874(lines 874 945) no Hoare annotation was computed. [2020-11-28 07:29:58,616 INFO L274 CegarLoopResult]: For program point L808(lines 808 832) no Hoare annotation was computed. [2020-11-28 07:29:58,616 INFO L274 CegarLoopResult]: For program point L445(lines 445 983) no Hoare annotation was computed. [2020-11-28 07:29:58,616 INFO L274 CegarLoopResult]: For program point L115(lines 115 123) no Hoare annotation was computed. [2020-11-28 07:29:58,616 INFO L274 CegarLoopResult]: For program point L842(lines 842 949) no Hoare annotation was computed. [2020-11-28 07:29:58,616 INFO L274 CegarLoopResult]: For program point L479(lines 479 490) no Hoare annotation was computed. [2020-11-28 07:29:58,616 INFO L274 CegarLoopResult]: For program point L248(lines 248 283) no Hoare annotation was computed. [2020-11-28 07:29:58,616 INFO L274 CegarLoopResult]: For program point L83(lines 83 286) no Hoare annotation was computed. [2020-11-28 07:29:58,616 INFO L274 CegarLoopResult]: For program point L513(lines 513 977) no Hoare annotation was computed. [2020-11-28 07:29:58,616 INFO L270 CegarLoopResult]: At program point L282(lines 132 284) the Hoare annotation is: (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (<= 1 ULTIMATE.start_main_~main__t~0)) [2020-11-28 07:29:58,616 INFO L274 CegarLoopResult]: For program point L183(lines 183 191) no Hoare annotation was computed. [2020-11-28 07:29:58,616 INFO L274 CegarLoopResult]: For program point L547(lines 547 558) no Hoare annotation was computed. [2020-11-28 07:29:58,617 INFO L274 CegarLoopResult]: For program point L217(lines 217 229) no Hoare annotation was computed. [2020-11-28 07:29:58,617 INFO L274 CegarLoopResult]: For program point L581(lines 581 971) no Hoare annotation was computed. [2020-11-28 07:29:58,617 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:29:58,617 INFO L274 CegarLoopResult]: For program point L317(lines 317 994) no Hoare annotation was computed. [2020-11-28 07:29:58,617 INFO L274 CegarLoopResult]: For program point L615(lines 615 626) no Hoare annotation was computed. [2020-11-28 07:29:58,617 INFO L274 CegarLoopResult]: For program point L649(lines 649 965) no Hoare annotation was computed. [2020-11-28 07:29:58,617 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,617 INFO L274 CegarLoopResult]: For program point L385(lines 385 988) no Hoare annotation was computed. [2020-11-28 07:29:58,617 INFO L274 CegarLoopResult]: For program point L22(lines 22 1005) no Hoare annotation was computed. [2020-11-28 07:29:58,617 INFO L274 CegarLoopResult]: For program point L881(lines 881 907) no Hoare annotation was computed. [2020-11-28 07:29:58,617 INFO L274 CegarLoopResult]: For program point L683(lines 683 694) no Hoare annotation was computed. [2020-11-28 07:29:58,617 INFO L274 CegarLoopResult]: For program point L155(lines 155 234) no Hoare annotation was computed. [2020-11-28 07:29:58,617 INFO L274 CegarLoopResult]: For program point L717(lines 717 959) no Hoare annotation was computed. [2020-11-28 07:29:58,617 INFO L274 CegarLoopResult]: For program point L453(lines 453 982) no Hoare annotation was computed. [2020-11-28 07:29:58,617 INFO L274 CegarLoopResult]: For program point L255(lines 255 277) no Hoare annotation was computed. [2020-11-28 07:29:58,617 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,617 INFO L274 CegarLoopResult]: For program point L751(lines 751 762) no Hoare annotation was computed. [2020-11-28 07:29:58,618 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:29:58,618 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,618 INFO L274 CegarLoopResult]: For program point L917(lines 917 943) no Hoare annotation was computed. [2020-11-28 07:29:58,618 INFO L274 CegarLoopResult]: For program point L785(lines 785 953) no Hoare annotation was computed. [2020-11-28 07:29:58,618 INFO L274 CegarLoopResult]: For program point L521(lines 521 976) no Hoare annotation was computed. [2020-11-28 07:29:58,618 INFO L274 CegarLoopResult]: For program point L26(lines 26 1000) no Hoare annotation was computed. [2020-11-28 07:29:58,618 INFO L274 CegarLoopResult]: For program point L819(lines 819 830) no Hoare annotation was computed. [2020-11-28 07:29:58,618 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,618 INFO L274 CegarLoopResult]: For program point L853(lines 853 947) no Hoare annotation was computed. [2020-11-28 07:29:58,618 INFO L274 CegarLoopResult]: For program point L589(lines 589 970) no Hoare annotation was computed. [2020-11-28 07:29:58,618 INFO L274 CegarLoopResult]: For program point L325(lines 325 993) no Hoare annotation was computed. [2020-11-28 07:29:58,618 INFO L274 CegarLoopResult]: For program point L657(lines 657 964) no Hoare annotation was computed. [2020-11-28 07:29:58,619 INFO L274 CegarLoopResult]: For program point L393(lines 393 987) no Hoare annotation was computed. [2020-11-28 07:29:58,619 INFO L274 CegarLoopResult]: For program point L96(lines 96 285) no Hoare annotation was computed. [2020-11-28 07:29:58,619 INFO L274 CegarLoopResult]: For program point L725(lines 725 958) no Hoare annotation was computed. [2020-11-28 07:29:58,619 INFO L274 CegarLoopResult]: For program point L461(lines 461 981) no Hoare annotation was computed. [2020-11-28 07:29:58,619 INFO L274 CegarLoopResult]: For program point L164(lines 164 233) no Hoare annotation was computed. [2020-11-28 07:29:58,619 INFO L274 CegarLoopResult]: For program point L65(lines 65 999) no Hoare annotation was computed. [2020-11-28 07:29:58,619 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,619 INFO L274 CegarLoopResult]: For program point L132(lines 132 284) no Hoare annotation was computed. [2020-11-28 07:29:58,619 INFO L274 CegarLoopResult]: For program point L793(lines 793 952) no Hoare annotation was computed. [2020-11-28 07:29:58,619 INFO L274 CegarLoopResult]: For program point L529(lines 529 975) no Hoare annotation was computed. [2020-11-28 07:29:58,619 INFO L274 CegarLoopResult]: For program point L298(lines 298 997) no Hoare annotation was computed. [2020-11-28 07:29:58,619 INFO L274 CegarLoopResult]: For program point L34(lines 34 58) no Hoare annotation was computed. [2020-11-28 07:29:58,619 INFO L274 CegarLoopResult]: For program point L893(lines 893 905) no Hoare annotation was computed. [2020-11-28 07:29:58,619 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:29:58,619 INFO L274 CegarLoopResult]: For program point L332(lines 332 356) no Hoare annotation was computed. [2020-11-28 07:29:58,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:29:58 BoogieIcfgContainer [2020-11-28 07:29:58,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:29:58,642 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:29:58,642 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:29:58,642 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:29:58,643 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:29:50" (3/4) ... [2020-11-28 07:29:58,646 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:29:58,671 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-28 07:29:58,673 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 07:29:58,674 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:29:58,675 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:29:58,826 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c5737c28-f525-408d-87e0-3eeebd0d9feb/bin/utaipan/witness.graphml [2020-11-28 07:29:58,826 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:29:58,828 INFO L168 Benchmark]: Toolchain (without parser) took 10322.96 ms. Allocated memory was 111.1 MB in the beginning and 218.1 MB in the end (delta: 107.0 MB). Free memory was 86.5 MB in the beginning and 128.5 MB in the end (delta: -42.0 MB). Peak memory consumption was 63.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:58,829 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 111.1 MB. Free memory was 69.7 MB in the beginning and 69.7 MB in the end (delta: 55.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:29:58,829 INFO L168 Benchmark]: CACSL2BoogieTranslator took 529.90 ms. Allocated memory is still 111.1 MB. Free memory was 86.2 MB in the beginning and 81.8 MB in the end (delta: 4.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:58,830 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.77 ms. Allocated memory is still 111.1 MB. Free memory was 81.6 MB in the beginning and 78.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:58,830 INFO L168 Benchmark]: Boogie Preprocessor took 41.03 ms. Allocated memory is still 111.1 MB. Free memory was 78.5 MB in the beginning and 76.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:58,831 INFO L168 Benchmark]: RCFGBuilder took 1177.41 ms. Allocated memory was 111.1 MB in the beginning and 142.6 MB in the end (delta: 31.5 MB). Free memory was 76.1 MB in the beginning and 87.2 MB in the end (delta: -11.0 MB). Peak memory consumption was 30.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:58,831 INFO L168 Benchmark]: TraceAbstraction took 8323.60 ms. Allocated memory was 142.6 MB in the beginning and 218.1 MB in the end (delta: 75.5 MB). Free memory was 86.6 MB in the beginning and 141.1 MB in the end (delta: -54.5 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:58,831 INFO L168 Benchmark]: Witness Printer took 184.57 ms. Allocated memory is still 218.1 MB. Free memory was 141.1 MB in the beginning and 128.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:58,833 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 111.1 MB. Free memory was 69.7 MB in the beginning and 69.7 MB in the end (delta: 55.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 529.90 ms. Allocated memory is still 111.1 MB. Free memory was 86.2 MB in the beginning and 81.8 MB in the end (delta: 4.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.77 ms. Allocated memory is still 111.1 MB. Free memory was 81.6 MB in the beginning and 78.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.03 ms. Allocated memory is still 111.1 MB. Free memory was 78.5 MB in the beginning and 76.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1177.41 ms. Allocated memory was 111.1 MB in the beginning and 142.6 MB in the end (delta: 31.5 MB). Free memory was 76.1 MB in the beginning and 87.2 MB in the end (delta: -11.0 MB). Peak memory consumption was 30.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8323.60 ms. Allocated memory was 142.6 MB in the beginning and 218.1 MB in the end (delta: 75.5 MB). Free memory was 86.6 MB in the beginning and 141.1 MB in the end (delta: -54.5 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. * Witness Printer took 184.57 ms. Allocated memory is still 218.1 MB. Free memory was 141.1 MB in the beginning and 128.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 0 <= main__t && main__t <= main__tagbuf_len - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 132]: Loop Invariant Derived loop invariant: main__t < main__tagbuf_len && 1 <= main__t - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: 1 <= main__t && main__t <= main__tagbuf_len - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 858]: Loop Invariant Derived loop invariant: 9 <= main__t && main__t <= main__tagbuf_len - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 118 locations, 16 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.0s, OverallIterations: 19, TraceHistogramMax: 1, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1016 SDtfs, 1875 SDslu, 1359 SDs, 0 SdLazy, 3476 SolverSat, 402 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 174 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 19 MinimizatonAttempts, 133 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 14 NumberOfFragments, 30 HoareAnnotationTreeSize, 6 FomulaSimplifications, 4287 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 257 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 367 NumberOfCodeBlocks, 367 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 348 ConstructedInterpolants, 0 QuantifiedInterpolants, 28920 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 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...