./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-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_ba975ab6-ae64-4073-9a4a-31406c84aa40/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ba975ab6-ae64-4073-9a4a-31406c84aa40/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ba975ab6-ae64-4073-9a4a-31406c84aa40/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ba975ab6-ae64-4073-9a4a-31406c84aa40/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ba975ab6-ae64-4073-9a4a-31406c84aa40/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ba975ab6-ae64-4073-9a4a-31406c84aa40/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 e45e933f699aab7bcc9592c7af081e2fbc1238f5 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:57:34,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:57:34,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:57:34,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:57:34,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:57:34,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:57:34,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:57:34,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:57:34,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:57:34,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:57:34,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:57:34,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:57:34,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:57:34,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:57:34,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:57:34,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:57:34,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:57:34,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:57:34,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:57:34,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:57:34,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:57:34,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:57:34,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:57:34,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:57:34,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:57:34,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:57:34,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:57:34,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:57:34,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:57:34,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:57:34,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:57:34,327 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:57:34,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:57:34,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:57:34,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:57:34,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:57:34,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:57:34,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:57:34,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:57:34,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:57:34,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:57:34,340 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ba975ab6-ae64-4073-9a4a-31406c84aa40/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:57:34,392 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:57:34,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:57:34,394 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:57:34,394 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:57:34,394 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:57:34,395 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:57:34,395 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:57:34,395 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:57:34,395 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:57:34,395 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:57:34,397 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:57:34,397 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:57:34,397 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:57:34,398 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:57:34,398 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:57:34,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:57:34,399 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:57:34,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:57:34,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:57:34,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:57:34,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:57:34,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:57:34,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:57:34,401 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:57:34,401 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:57:34,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:57:34,401 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:57:34,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:57:34,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:57:34,403 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:57:34,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:57:34,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:57:34,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:57:34,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:57:34,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:57:34,405 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:57:34,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:57:34,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:57:34,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:57:34,406 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:57:34,406 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_ba975ab6-ae64-4073-9a4a-31406c84aa40/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ba975ab6-ae64-4073-9a4a-31406c84aa40/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e45e933f699aab7bcc9592c7af081e2fbc1238f5 [2020-11-30 02:57:34,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:57:34,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:57:34,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:57:34,753 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:57:34,754 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:57:34,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ba975ab6-ae64-4073-9a4a-31406c84aa40/bin/utaipan/../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2020-11-30 02:57:34,843 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ba975ab6-ae64-4073-9a4a-31406c84aa40/bin/utaipan/data/c795d8d27/8c124eaa66144c85b9828b13e0c64b1c/FLAG238b1febf [2020-11-30 02:57:35,339 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:57:35,339 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ba975ab6-ae64-4073-9a4a-31406c84aa40/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2020-11-30 02:57:35,348 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ba975ab6-ae64-4073-9a4a-31406c84aa40/bin/utaipan/data/c795d8d27/8c124eaa66144c85b9828b13e0c64b1c/FLAG238b1febf [2020-11-30 02:57:35,696 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ba975ab6-ae64-4073-9a4a-31406c84aa40/bin/utaipan/data/c795d8d27/8c124eaa66144c85b9828b13e0c64b1c [2020-11-30 02:57:35,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:57:35,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:57:35,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:57:35,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:57:35,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:57:35,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:57:35" (1/1) ... [2020-11-30 02:57:35,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a25bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:57:35, skipping insertion in model container [2020-11-30 02:57:35,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:57:35" (1/1) ... [2020-11-30 02:57:35,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:57:35,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:57:35,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:57:36,000 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:57:36,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:57:36,060 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:57:36,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:57:36 WrapperNode [2020-11-30 02:57:36,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:57:36,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:57:36,062 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:57:36,063 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:57:36,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:57:36" (1/1) ... [2020-11-30 02:57:36,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:57:36" (1/1) ... [2020-11-30 02:57:36,111 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:57:36,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:57:36,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:57:36,112 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:57:36,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:57:36" (1/1) ... [2020-11-30 02:57:36,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:57:36" (1/1) ... [2020-11-30 02:57:36,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:57:36" (1/1) ... [2020-11-30 02:57:36,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:57:36" (1/1) ... [2020-11-30 02:57:36,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:57:36" (1/1) ... [2020-11-30 02:57:36,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:57:36" (1/1) ... [2020-11-30 02:57:36,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:57:36" (1/1) ... [2020-11-30 02:57:36,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:57:36,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:57:36,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:57:36,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:57:36,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:57:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba975ab6-ae64-4073-9a4a-31406c84aa40/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 [2020-11-30 02:57:36,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:57:36,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:57:36,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:57:36,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:57:37,047 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:57:37,047 INFO L298 CfgBuilder]: Removed 40 assume(true) statements. [2020-11-30 02:57:37,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:57:37 BoogieIcfgContainer [2020-11-30 02:57:37,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:57:37,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:57:37,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:57:37,062 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:57:37,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:57:35" (1/3) ... [2020-11-30 02:57:37,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf6f7f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:57:37, skipping insertion in model container [2020-11-30 02:57:37,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:57:36" (2/3) ... [2020-11-30 02:57:37,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf6f7f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:57:37, skipping insertion in model container [2020-11-30 02:57:37,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:57:37" (3/3) ... [2020-11-30 02:57:37,065 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.i.v+cfa-reducer.c [2020-11-30 02:57:37,076 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:57:37,082 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 18 error locations. [2020-11-30 02:57:37,093 INFO L253 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2020-11-30 02:57:37,133 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:57:37,133 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:57:37,133 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:57:37,133 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:57:37,134 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:57:37,134 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:57:37,134 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:57:37,134 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:57:37,148 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-11-30 02:57:37,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 02:57:37,153 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:57:37,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:57:37,154 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_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]=== [2020-11-30 02:57:37,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:57:37,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1928330847, now seen corresponding path program 1 times [2020-11-30 02:57:37,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:57:37,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141445118] [2020-11-30 02:57:37,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:57:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:57:37,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:57:37,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141445118] [2020-11-30 02:57:37,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:57:37,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:57:37,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746739309] [2020-11-30 02:57:37,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:57:37,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:57:37,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:57:37,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:57:37,467 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 3 states. [2020-11-30 02:57:37,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:57:37,516 INFO L93 Difference]: Finished difference Result 84 states and 119 transitions. [2020-11-30 02:57:37,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:57:37,518 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-11-30 02:57:37,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:57:37,531 INFO L225 Difference]: With dead ends: 84 [2020-11-30 02:57:37,531 INFO L226 Difference]: Without dead ends: 75 [2020-11-30 02:57:37,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:57:37,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-30 02:57:37,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-11-30 02:57:37,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-30 02:57:37,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2020-11-30 02:57:37,601 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 14 [2020-11-30 02:57:37,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:57:37,603 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2020-11-30 02:57:37,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:57:37,604 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2020-11-30 02:57:37,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 02:57:37,605 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:57:37,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:57:37,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:57:37,606 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_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]=== [2020-11-30 02:57:37,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:57:37,609 INFO L82 PathProgramCache]: Analyzing trace with hash -351279809, now seen corresponding path program 1 times [2020-11-30 02:57:37,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:57:37,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964697839] [2020-11-30 02:57:37,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:57:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:57:37,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:57:37,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964697839] [2020-11-30 02:57:37,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:57:37,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 02:57:37,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380438386] [2020-11-30 02:57:37,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:57:37,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:57:37,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:57:37,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:57:37,757 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand 6 states. [2020-11-30 02:57:37,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:57:37,924 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2020-11-30 02:57:37,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:57:37,925 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-30 02:57:37,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:57:37,927 INFO L225 Difference]: With dead ends: 75 [2020-11-30 02:57:37,927 INFO L226 Difference]: Without dead ends: 73 [2020-11-30 02:57:37,928 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 [2020-11-30 02:57:37,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-30 02:57:37,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-11-30 02:57:37,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-30 02:57:37,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2020-11-30 02:57:37,950 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 15 [2020-11-30 02:57:37,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:57:37,951 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2020-11-30 02:57:37,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:57:37,951 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2020-11-30 02:57:37,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 02:57:37,953 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:57:37,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:57:37,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:57:37,954 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_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]=== [2020-11-30 02:57:37,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:57:37,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1722708770, now seen corresponding path program 1 times [2020-11-30 02:57:37,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:57:37,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032823103] [2020-11-30 02:57:37,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:57:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:57:38,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:57:38,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032823103] [2020-11-30 02:57:38,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:57:38,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:57:38,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710554383] [2020-11-30 02:57:38,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:57:38,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:57:38,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:57:38,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:57:38,060 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand 4 states. [2020-11-30 02:57:38,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:57:38,209 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2020-11-30 02:57:38,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:57:38,211 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-30 02:57:38,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:57:38,212 INFO L225 Difference]: With dead ends: 96 [2020-11-30 02:57:38,212 INFO L226 Difference]: Without dead ends: 94 [2020-11-30 02:57:38,213 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 [2020-11-30 02:57:38,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-11-30 02:57:38,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 71. [2020-11-30 02:57:38,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-30 02:57:38,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2020-11-30 02:57:38,233 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 17 [2020-11-30 02:57:38,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:57:38,234 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2020-11-30 02:57:38,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:57:38,234 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2020-11-30 02:57:38,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 02:57:38,235 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:57:38,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:57:38,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 02:57:38,236 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_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]=== [2020-11-30 02:57:38,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:57:38,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1864370417, now seen corresponding path program 1 times [2020-11-30 02:57:38,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:57:38,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483463441] [2020-11-30 02:57:38,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:57:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:57:38,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:57:38,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483463441] [2020-11-30 02:57:38,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:57:38,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 02:57:38,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085229319] [2020-11-30 02:57:38,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:57:38,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:57:38,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:57:38,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:57:38,335 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand 5 states. [2020-11-30 02:57:38,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:57:38,423 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2020-11-30 02:57:38,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:57:38,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-30 02:57:38,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:57:38,425 INFO L225 Difference]: With dead ends: 71 [2020-11-30 02:57:38,425 INFO L226 Difference]: Without dead ends: 69 [2020-11-30 02:57:38,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:57:38,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-30 02:57:38,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-11-30 02:57:38,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-30 02:57:38,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2020-11-30 02:57:38,433 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 18 [2020-11-30 02:57:38,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:57:38,433 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2020-11-30 02:57:38,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:57:38,434 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2020-11-30 02:57:38,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 02:57:38,435 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:57:38,435 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] [2020-11-30 02:57:38,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 02:57:38,435 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_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]=== [2020-11-30 02:57:38,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:57:38,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1046947324, now seen corresponding path program 1 times [2020-11-30 02:57:38,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:57:38,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897877080] [2020-11-30 02:57:38,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:57:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:57:38,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:57:38,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897877080] [2020-11-30 02:57:38,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:57:38,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 02:57:38,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990644092] [2020-11-30 02:57:38,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:57:38,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:57:38,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:57:38,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:57:38,572 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand 5 states. [2020-11-30 02:57:38,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:57:38,736 INFO L93 Difference]: Finished difference Result 105 states and 111 transitions. [2020-11-30 02:57:38,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 02:57:38,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-11-30 02:57:38,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:57:38,738 INFO L225 Difference]: With dead ends: 105 [2020-11-30 02:57:38,739 INFO L226 Difference]: Without dead ends: 103 [2020-11-30 02:57:38,739 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 [2020-11-30 02:57:38,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-30 02:57:38,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 73. [2020-11-30 02:57:38,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-30 02:57:38,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2020-11-30 02:57:38,752 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 21 [2020-11-30 02:57:38,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:57:38,752 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2020-11-30 02:57:38,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:57:38,753 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2020-11-30 02:57:38,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 02:57:38,754 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:57:38,754 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] [2020-11-30 02:57:38,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 02:57:38,756 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_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]=== [2020-11-30 02:57:38,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:57:38,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1051925405, now seen corresponding path program 1 times [2020-11-30 02:57:38,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:57:38,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404502510] [2020-11-30 02:57:38,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:57:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:57:38,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:57:38,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404502510] [2020-11-30 02:57:38,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:57:38,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 02:57:38,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926477022] [2020-11-30 02:57:38,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:57:38,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:57:38,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:57:38,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:57:38,821 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 5 states. [2020-11-30 02:57:39,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:57:39,012 INFO L93 Difference]: Finished difference Result 132 states and 138 transitions. [2020-11-30 02:57:39,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 02:57:39,013 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-11-30 02:57:39,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:57:39,014 INFO L225 Difference]: With dead ends: 132 [2020-11-30 02:57:39,014 INFO L226 Difference]: Without dead ends: 130 [2020-11-30 02:57:39,015 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 [2020-11-30 02:57:39,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-11-30 02:57:39,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 74. [2020-11-30 02:57:39,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-30 02:57:39,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2020-11-30 02:57:39,023 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 21 [2020-11-30 02:57:39,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:57:39,027 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2020-11-30 02:57:39,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:57:39,027 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2020-11-30 02:57:39,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 02:57:39,031 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:57:39,031 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] [2020-11-30 02:57:39,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 02:57:39,032 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_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]=== [2020-11-30 02:57:39,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:57:39,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1904377450, now seen corresponding path program 1 times [2020-11-30 02:57:39,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:57:39,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115918067] [2020-11-30 02:57:39,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:57:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:57:39,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:57:39,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115918067] [2020-11-30 02:57:39,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:57:39,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 02:57:39,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787250564] [2020-11-30 02:57:39,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:57:39,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:57:39,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:57:39,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:57:39,120 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand 5 states. [2020-11-30 02:57:39,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:57:39,225 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2020-11-30 02:57:39,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:57:39,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-11-30 02:57:39,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:57:39,227 INFO L225 Difference]: With dead ends: 74 [2020-11-30 02:57:39,227 INFO L226 Difference]: Without dead ends: 72 [2020-11-30 02:57:39,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:57:39,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-30 02:57:39,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-11-30 02:57:39,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-30 02:57:39,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2020-11-30 02:57:39,238 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 22 [2020-11-30 02:57:39,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:57:39,239 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2020-11-30 02:57:39,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:57:39,239 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2020-11-30 02:57:39,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 02:57:39,240 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:57:39,240 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] [2020-11-30 02:57:39,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 02:57:39,242 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_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]=== [2020-11-30 02:57:39,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:57:39,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1750057086, now seen corresponding path program 1 times [2020-11-30 02:57:39,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:57:39,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462120230] [2020-11-30 02:57:39,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:57:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:57:39,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:57:39,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462120230] [2020-11-30 02:57:39,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:57:39,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 02:57:39,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001919254] [2020-11-30 02:57:39,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:57:39,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:57:39,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:57:39,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:57:39,324 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand 5 states. [2020-11-30 02:57:39,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:57:39,495 INFO L93 Difference]: Finished difference Result 112 states and 118 transitions. [2020-11-30 02:57:39,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:57:39,495 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-11-30 02:57:39,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:57:39,496 INFO L225 Difference]: With dead ends: 112 [2020-11-30 02:57:39,496 INFO L226 Difference]: Without dead ends: 110 [2020-11-30 02:57:39,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:57:39,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-11-30 02:57:39,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 70. [2020-11-30 02:57:39,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-30 02:57:39,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 75 transitions. [2020-11-30 02:57:39,503 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 75 transitions. Word has length 22 [2020-11-30 02:57:39,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:57:39,504 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 75 transitions. [2020-11-30 02:57:39,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:57:39,504 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 75 transitions. [2020-11-30 02:57:39,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 02:57:39,505 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:57:39,505 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] [2020-11-30 02:57:39,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 02:57:39,505 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_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]=== [2020-11-30 02:57:39,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:57:39,506 INFO L82 PathProgramCache]: Analyzing trace with hash 450855697, now seen corresponding path program 1 times [2020-11-30 02:57:39,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:57:39,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115872604] [2020-11-30 02:57:39,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:57:39,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:57:39,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:57:39,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115872604] [2020-11-30 02:57:39,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:57:39,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:57:39,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650950034] [2020-11-30 02:57:39,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:57:39,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:57:39,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:57:39,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:57:39,553 INFO L87 Difference]: Start difference. First operand 70 states and 75 transitions. Second operand 3 states. [2020-11-30 02:57:39,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:57:39,623 INFO L93 Difference]: Finished difference Result 110 states and 116 transitions. [2020-11-30 02:57:39,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:57:39,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-30 02:57:39,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:57:39,625 INFO L225 Difference]: With dead ends: 110 [2020-11-30 02:57:39,625 INFO L226 Difference]: Without dead ends: 70 [2020-11-30 02:57:39,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:57:39,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-30 02:57:39,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-11-30 02:57:39,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-30 02:57:39,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2020-11-30 02:57:39,631 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 24 [2020-11-30 02:57:39,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:57:39,631 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2020-11-30 02:57:39,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:57:39,631 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2020-11-30 02:57:39,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 02:57:39,632 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:57:39,632 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] [2020-11-30 02:57:39,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 02:57:39,633 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_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]=== [2020-11-30 02:57:39,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:57:39,633 INFO L82 PathProgramCache]: Analyzing trace with hash -65234914, now seen corresponding path program 1 times [2020-11-30 02:57:39,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:57:39,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34729758] [2020-11-30 02:57:39,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:57:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:57:39,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:57:39,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34729758] [2020-11-30 02:57:39,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:57:39,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 02:57:39,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447078901] [2020-11-30 02:57:39,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:57:39,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:57:39,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:57:39,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:57:39,728 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand 5 states. [2020-11-30 02:57:39,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:57:39,830 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2020-11-30 02:57:39,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:57:39,831 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-11-30 02:57:39,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:57:39,831 INFO L225 Difference]: With dead ends: 71 [2020-11-30 02:57:39,831 INFO L226 Difference]: Without dead ends: 69 [2020-11-30 02:57:39,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:57:39,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-30 02:57:39,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2020-11-30 02:57:39,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-30 02:57:39,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2020-11-30 02:57:39,836 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 25 [2020-11-30 02:57:39,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:57:39,837 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2020-11-30 02:57:39,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:57:39,837 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2020-11-30 02:57:39,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 02:57:39,838 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:57:39,838 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:57:39,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 02:57:39,839 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_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]=== [2020-11-30 02:57:39,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:57:39,839 INFO L82 PathProgramCache]: Analyzing trace with hash -656487132, now seen corresponding path program 1 times [2020-11-30 02:57:39,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:57:39,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869275954] [2020-11-30 02:57:39,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:57:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:57:39,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 02:57:39,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869275954] [2020-11-30 02:57:39,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719868945] [2020-11-30 02:57:39,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba975ab6-ae64-4073-9a4a-31406c84aa40/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:57:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:57:40,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 02:57:40,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:57:40,212 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:57:40,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 02:57:40,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:57:40,267 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:57:40,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 02:57:40,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [157565325] [2020-11-30 02:57:40,331 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2020-11-30 02:57:40,332 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:57:40,340 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:57:40,346 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:57:40,347 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:57:40,640 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-11-30 02:57:40,673 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-11-30 02:57:40,951 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:57:41,588 WARN L193 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 84 [2020-11-30 02:57:41,829 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-11-30 02:57:42,099 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2020-11-30 02:57:42,363 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-11-30 02:57:42,628 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-11-30 02:57:42,916 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2020-11-30 02:57:43,202 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2020-11-30 02:57:43,426 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2020-11-30 02:57:43,672 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2020-11-30 02:57:43,896 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2020-11-30 02:57:44,117 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2020-11-30 02:57:44,366 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 64 [2020-11-30 02:57:44,650 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2020-11-30 02:57:44,967 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 79 [2020-11-30 02:57:45,325 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2020-11-30 02:57:45,727 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 88 [2020-11-30 02:57:46,154 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 94 [2020-11-30 02:57:46,341 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-11-30 02:57:46,574 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-11-30 02:57:46,959 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-11-30 02:57:47,368 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 93 [2020-11-30 02:57:47,371 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:57:47,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:57:47,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2020-11-30 02:57:47,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082651981] [2020-11-30 02:57:47,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:57:47,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:57:47,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:57:47,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2020-11-30 02:57:47,373 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand 6 states. [2020-11-30 02:57:47,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:57:47,523 INFO L93 Difference]: Finished difference Result 106 states and 110 transitions. [2020-11-30 02:57:47,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:57:47,531 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-11-30 02:57:47,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:57:47,532 INFO L225 Difference]: With dead ends: 106 [2020-11-30 02:57:47,532 INFO L226 Difference]: Without dead ends: 104 [2020-11-30 02:57:47,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2020-11-30 02:57:47,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-11-30 02:57:47,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 65. [2020-11-30 02:57:47,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-30 02:57:47,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2020-11-30 02:57:47,550 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 25 [2020-11-30 02:57:47,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:57:47,550 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2020-11-30 02:57:47,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:57:47,551 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2020-11-30 02:57:47,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 02:57:47,552 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:57:47,552 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] [2020-11-30 02:57:47,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-30 02:57:47,771 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_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]=== [2020-11-30 02:57:47,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:57:47,772 INFO L82 PathProgramCache]: Analyzing trace with hash -2022276183, now seen corresponding path program 1 times [2020-11-30 02:57:47,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:57:47,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353915900] [2020-11-30 02:57:47,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:57:47,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:57:47,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:57:47,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353915900] [2020-11-30 02:57:47,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:57:47,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 02:57:47,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705974286] [2020-11-30 02:57:47,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:57:47,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:57:47,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:57:47,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:57:47,819 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand 5 states. [2020-11-30 02:57:47,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:57:47,903 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2020-11-30 02:57:47,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:57:47,903 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-11-30 02:57:47,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:57:47,904 INFO L225 Difference]: With dead ends: 65 [2020-11-30 02:57:47,904 INFO L226 Difference]: Without dead ends: 63 [2020-11-30 02:57:47,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:57:47,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-30 02:57:47,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-11-30 02:57:47,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-30 02:57:47,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2020-11-30 02:57:47,909 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 26 [2020-11-30 02:57:47,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:57:47,909 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2020-11-30 02:57:47,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:57:47,910 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2020-11-30 02:57:47,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 02:57:47,910 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:57:47,910 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:57:47,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-30 02:57:47,911 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_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]=== [2020-11-30 02:57:47,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:57:47,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1119147894, now seen corresponding path program 1 times [2020-11-30 02:57:47,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:57:47,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216492389] [2020-11-30 02:57:47,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:57:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:57:47,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 02:57:47,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216492389] [2020-11-30 02:57:47,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137391438] [2020-11-30 02:57:47,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba975ab6-ae64-4073-9a4a-31406c84aa40/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:57:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:57:48,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 02:57:48,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:57:48,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 02:57:48,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:57:48,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 02:57:48,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [726355567] [2020-11-30 02:57:48,170 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2020-11-30 02:57:48,170 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:57:48,170 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:57:48,170 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:57:48,171 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:57:48,352 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-11-30 02:57:48,377 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-11-30 02:57:48,542 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:57:48,946 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-11-30 02:57:49,114 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-11-30 02:57:49,298 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2020-11-30 02:57:49,470 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-11-30 02:57:49,660 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-11-30 02:57:49,882 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2020-11-30 02:57:50,164 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2020-11-30 02:57:50,463 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2020-11-30 02:57:50,670 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2020-11-30 02:57:50,920 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2020-11-30 02:57:51,139 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2020-11-30 02:57:51,431 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 64 [2020-11-30 02:57:51,728 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2020-11-30 02:57:52,033 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 79 [2020-11-30 02:57:52,369 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2020-11-30 02:57:52,811 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 88 [2020-11-30 02:57:53,275 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 94 [2020-11-30 02:57:53,454 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-11-30 02:57:53,647 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-11-30 02:57:54,074 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-11-30 02:57:54,496 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 93 [2020-11-30 02:57:54,725 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-30 02:57:54,971 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-30 02:57:54,972 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:57:54,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:57:54,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2020-11-30 02:57:54,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987629444] [2020-11-30 02:57:54,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:57:54,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:57:54,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:57:54,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2020-11-30 02:57:54,974 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand 6 states. [2020-11-30 02:57:55,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:57:55,060 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2020-11-30 02:57:55,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:57:55,061 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-11-30 02:57:55,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:57:55,062 INFO L225 Difference]: With dead ends: 64 [2020-11-30 02:57:55,062 INFO L226 Difference]: Without dead ends: 62 [2020-11-30 02:57:55,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=212, Invalid=718, Unknown=0, NotChecked=0, Total=930 [2020-11-30 02:57:55,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-30 02:57:55,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2020-11-30 02:57:55,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-30 02:57:55,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2020-11-30 02:57:55,066 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 26 [2020-11-30 02:57:55,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:57:55,066 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2020-11-30 02:57:55,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:57:55,066 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2020-11-30 02:57:55,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-30 02:57:55,066 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:57:55,066 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] [2020-11-30 02:57:55,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-11-30 02:57:55,267 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_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]=== [2020-11-30 02:57:55,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:57:55,268 INFO L82 PathProgramCache]: Analyzing trace with hash -117518678, now seen corresponding path program 1 times [2020-11-30 02:57:55,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:57:55,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448913333] [2020-11-30 02:57:55,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:57:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:57:55,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:57:55,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448913333] [2020-11-30 02:57:55,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:57:55,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 02:57:55,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209870479] [2020-11-30 02:57:55,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:57:55,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:57:55,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:57:55,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:57:55,348 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 5 states. [2020-11-30 02:57:55,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:57:55,443 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2020-11-30 02:57:55,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:57:55,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-11-30 02:57:55,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:57:55,444 INFO L225 Difference]: With dead ends: 58 [2020-11-30 02:57:55,444 INFO L226 Difference]: Without dead ends: 56 [2020-11-30 02:57:55,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:57:55,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-30 02:57:55,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-11-30 02:57:55,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-30 02:57:55,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-11-30 02:57:55,448 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 29 [2020-11-30 02:57:55,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:57:55,449 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-11-30 02:57:55,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:57:55,449 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-11-30 02:57:55,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 02:57:55,449 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:57:55,449 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] [2020-11-30 02:57:55,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-11-30 02:57:55,450 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_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]=== [2020-11-30 02:57:55,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:57:55,450 INFO L82 PathProgramCache]: Analyzing trace with hash 651894455, now seen corresponding path program 1 times [2020-11-30 02:57:55,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:57:55,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780351930] [2020-11-30 02:57:55,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:57:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:57:55,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:57:55,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780351930] [2020-11-30 02:57:55,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:57:55,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 02:57:55,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45908129] [2020-11-30 02:57:55,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:57:55,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:57:55,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:57:55,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:57:55,521 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 6 states. [2020-11-30 02:57:55,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:57:55,656 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2020-11-30 02:57:55,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:57:55,657 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-11-30 02:57:55,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:57:55,658 INFO L225 Difference]: With dead ends: 66 [2020-11-30 02:57:55,658 INFO L226 Difference]: Without dead ends: 64 [2020-11-30 02:57:55,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:57:55,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-30 02:57:55,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 53. [2020-11-30 02:57:55,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-30 02:57:55,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-11-30 02:57:55,662 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 30 [2020-11-30 02:57:55,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:57:55,662 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-11-30 02:57:55,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:57:55,662 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-11-30 02:57:55,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-30 02:57:55,665 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:57:55,666 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] [2020-11-30 02:57:55,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-11-30 02:57:55,666 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_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]=== [2020-11-30 02:57:55,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:57:55,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1248420490, now seen corresponding path program 1 times [2020-11-30 02:57:55,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:57:55,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499618919] [2020-11-30 02:57:55,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:57:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:57:55,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:57:55,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499618919] [2020-11-30 02:57:55,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:57:55,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 02:57:55,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267032108] [2020-11-30 02:57:55,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:57:55,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:57:55,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:57:55,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:57:55,735 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 5 states. [2020-11-30 02:57:55,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:57:55,887 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2020-11-30 02:57:55,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 02:57:55,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-11-30 02:57:55,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:57:55,888 INFO L225 Difference]: With dead ends: 86 [2020-11-30 02:57:55,888 INFO L226 Difference]: Without dead ends: 84 [2020-11-30 02:57:55,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:57:55,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-30 02:57:55,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 56. [2020-11-30 02:57:55,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-30 02:57:55,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-11-30 02:57:55,895 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 33 [2020-11-30 02:57:55,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:57:55,896 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-11-30 02:57:55,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:57:55,896 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-11-30 02:57:55,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-30 02:57:55,900 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:57:55,900 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] [2020-11-30 02:57:55,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-11-30 02:57:55,900 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_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]=== [2020-11-30 02:57:55,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:57:55,901 INFO L82 PathProgramCache]: Analyzing trace with hash -46323324, now seen corresponding path program 1 times [2020-11-30 02:57:55,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:57:55,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422161990] [2020-11-30 02:57:55,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:57:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:57:55,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:57:55,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422161990] [2020-11-30 02:57:55,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:57:55,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 02:57:55,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370540694] [2020-11-30 02:57:55,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:57:55,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:57:55,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:57:55,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:57:55,978 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 5 states. [2020-11-30 02:57:56,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:57:56,101 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2020-11-30 02:57:56,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:57:56,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-11-30 02:57:56,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:57:56,102 INFO L225 Difference]: With dead ends: 56 [2020-11-30 02:57:56,103 INFO L226 Difference]: Without dead ends: 54 [2020-11-30 02:57:56,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:57:56,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-30 02:57:56,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-30 02:57:56,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-30 02:57:56,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-11-30 02:57:56,107 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 34 [2020-11-30 02:57:56,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:57:56,107 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-11-30 02:57:56,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:57:56,107 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-11-30 02:57:56,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-30 02:57:56,107 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:57:56,108 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] [2020-11-30 02:57:56,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-11-30 02:57:56,108 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_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]=== [2020-11-30 02:57:56,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:57:56,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1566848601, now seen corresponding path program 1 times [2020-11-30 02:57:56,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:57:56,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415559494] [2020-11-30 02:57:56,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:57:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:57:56,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:57:56,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415559494] [2020-11-30 02:57:56,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:57:56,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:57:56,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474874366] [2020-11-30 02:57:56,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:57:56,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:57:56,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:57:56,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:57:56,147 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 4 states. [2020-11-30 02:57:56,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:57:56,188 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2020-11-30 02:57:56,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:57:56,189 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-11-30 02:57:56,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:57:56,190 INFO L225 Difference]: With dead ends: 65 [2020-11-30 02:57:56,190 INFO L226 Difference]: Without dead ends: 63 [2020-11-30 02:57:56,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:57:56,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-30 02:57:56,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 52. [2020-11-30 02:57:56,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-30 02:57:56,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-11-30 02:57:56,194 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 36 [2020-11-30 02:57:56,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:57:56,195 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-11-30 02:57:56,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:57:56,195 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-11-30 02:57:56,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-30 02:57:56,195 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:57:56,195 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] [2020-11-30 02:57:56,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-11-30 02:57:56,196 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_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]=== [2020-11-30 02:57:56,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:57:56,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1327660152, now seen corresponding path program 1 times [2020-11-30 02:57:56,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:57:56,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78167619] [2020-11-30 02:57:56,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:57:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:57:56,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:57:56,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78167619] [2020-11-30 02:57:56,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:57:56,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 02:57:56,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064731454] [2020-11-30 02:57:56,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:57:56,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:57:56,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:57:56,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:57:56,237 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 5 states. [2020-11-30 02:57:56,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:57:56,272 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2020-11-30 02:57:56,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:57:56,273 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-11-30 02:57:56,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:57:56,274 INFO L225 Difference]: With dead ends: 61 [2020-11-30 02:57:56,274 INFO L226 Difference]: Without dead ends: 59 [2020-11-30 02:57:56,274 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 [2020-11-30 02:57:56,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-30 02:57:56,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2020-11-30 02:57:56,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-30 02:57:56,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-11-30 02:57:56,278 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 37 [2020-11-30 02:57:56,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:57:56,279 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-11-30 02:57:56,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:57:56,279 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-11-30 02:57:56,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-30 02:57:56,279 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:57:56,280 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] [2020-11-30 02:57:56,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-11-30 02:57:56,280 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_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]=== [2020-11-30 02:57:56,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:57:56,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1792214480, now seen corresponding path program 1 times [2020-11-30 02:57:56,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:57:56,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375983619] [2020-11-30 02:57:56,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:57:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:57:56,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:57:56,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375983619] [2020-11-30 02:57:56,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:57:56,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 02:57:56,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625868401] [2020-11-30 02:57:56,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:57:56,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:57:56,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:57:56,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:57:56,364 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 5 states. [2020-11-30 02:57:56,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:57:56,544 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2020-11-30 02:57:56,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 02:57:56,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-11-30 02:57:56,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:57:56,545 INFO L225 Difference]: With dead ends: 83 [2020-11-30 02:57:56,545 INFO L226 Difference]: Without dead ends: 81 [2020-11-30 02:57:56,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:57:56,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-11-30 02:57:56,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 55. [2020-11-30 02:57:56,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-30 02:57:56,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-11-30 02:57:56,550 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 38 [2020-11-30 02:57:56,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:57:56,550 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-11-30 02:57:56,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:57:56,550 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-11-30 02:57:56,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-30 02:57:56,551 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:57:56,551 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] [2020-11-30 02:57:56,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-11-30 02:57:56,555 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_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]=== [2020-11-30 02:57:56,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:57:56,556 INFO L82 PathProgramCache]: Analyzing trace with hash -275919727, now seen corresponding path program 1 times [2020-11-30 02:57:56,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:57:56,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572181985] [2020-11-30 02:57:56,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:57:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:57:56,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:57:56,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572181985] [2020-11-30 02:57:56,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:57:56,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 02:57:56,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339917916] [2020-11-30 02:57:56,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:57:56,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:57:56,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:57:56,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:57:56,643 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 5 states. [2020-11-30 02:57:56,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:57:56,787 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2020-11-30 02:57:56,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:57:56,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-11-30 02:57:56,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:57:56,789 INFO L225 Difference]: With dead ends: 68 [2020-11-30 02:57:56,789 INFO L226 Difference]: Without dead ends: 66 [2020-11-30 02:57:56,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:57:56,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-30 02:57:56,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2020-11-30 02:57:56,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-30 02:57:56,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2020-11-30 02:57:56,800 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 39 [2020-11-30 02:57:56,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:57:56,800 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2020-11-30 02:57:56,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:57:56,800 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2020-11-30 02:57:56,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-30 02:57:56,801 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:57:56,801 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:57:56,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-11-30 02:57:56,804 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_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]=== [2020-11-30 02:57:56,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:57:56,805 INFO L82 PathProgramCache]: Analyzing trace with hash 894729536, now seen corresponding path program 1 times [2020-11-30 02:57:56,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:57:56,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280574872] [2020-11-30 02:57:56,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:57:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:57:56,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:57:56,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280574872] [2020-11-30 02:57:56,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441665911] [2020-11-30 02:57:56,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba975ab6-ae64-4073-9a4a-31406c84aa40/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:57:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:57:56,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 02:57:57,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:57:57,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:57:57,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:57:57,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:57:57,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [462810801] [2020-11-30 02:57:57,108 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2020-11-30 02:57:57,109 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:57:57,109 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:57:57,109 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:57:57,109 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:57:57,312 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2020-11-30 02:57:57,406 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2020-11-30 02:57:57,598 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2020-11-30 02:57:57,744 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:57:57,970 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-11-30 02:57:58,164 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2020-11-30 02:57:58,336 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-11-30 02:57:58,523 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-11-30 02:57:58,824 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2020-11-30 02:57:59,061 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2020-11-30 02:57:59,264 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2020-11-30 02:57:59,471 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2020-11-30 02:57:59,686 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2020-11-30 02:57:59,968 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2020-11-30 02:58:00,211 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 64 [2020-11-30 02:58:00,484 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2020-11-30 02:58:00,797 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 79 [2020-11-30 02:58:01,152 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2020-11-30 02:58:01,572 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 88 [2020-11-30 02:58:02,108 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 94 [2020-11-30 02:58:02,720 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 97 [2020-11-30 02:58:03,225 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 99 [2020-11-30 02:58:03,779 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 105 [2020-11-30 02:58:04,376 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 111 [2020-11-30 02:58:05,121 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 117 [2020-11-30 02:58:05,791 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 121 [2020-11-30 02:58:06,265 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-11-30 02:58:06,635 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-11-30 02:58:07,340 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 124 [2020-11-30 02:58:08,174 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 127 [2020-11-30 02:58:08,955 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 132 [2020-11-30 02:58:09,820 WARN L193 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 136 [2020-11-30 02:58:10,724 WARN L193 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 136 [2020-11-30 02:58:11,637 WARN L193 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 134 [2020-11-30 02:58:11,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:58:11,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [5, 5, 5] total 36 [2020-11-30 02:58:11,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675703787] [2020-11-30 02:58:11,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-30 02:58:11,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:58:11,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-30 02:58:11,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=894, Unknown=0, NotChecked=0, Total=1260 [2020-11-30 02:58:11,736 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand 32 states. [2020-11-30 02:58:12,831 WARN L193 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 130 [2020-11-30 02:58:13,814 WARN L193 SmtUtils]: Spent 944.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 138 [2020-11-30 02:58:14,833 WARN L193 SmtUtils]: Spent 988.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 142 [2020-11-30 02:58:16,029 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 200 DAG size of output: 147 [2020-11-30 02:58:17,177 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 204 DAG size of output: 151 [2020-11-30 02:58:18,306 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 206 DAG size of output: 155 [2020-11-30 02:58:19,437 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 204 DAG size of output: 153 [2020-11-30 02:58:20,315 WARN L193 SmtUtils]: Spent 831.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 145 [2020-11-30 02:58:21,228 WARN L193 SmtUtils]: Spent 879.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 148 [2020-11-30 02:58:22,188 WARN L193 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 153 [2020-11-30 02:58:23,208 WARN L193 SmtUtils]: Spent 979.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 158 [2020-11-30 02:58:24,024 WARN L193 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 129 [2020-11-30 02:58:25,070 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 177 DAG size of output: 157 [2020-11-30 02:58:26,113 WARN L193 SmtUtils]: Spent 989.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 155 [2020-11-30 02:58:26,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:58:26,224 INFO L93 Difference]: Finished difference Result 114 states and 122 transitions. [2020-11-30 02:58:26,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-30 02:58:26,225 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 39 [2020-11-30 02:58:26,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:58:26,226 INFO L225 Difference]: With dead ends: 114 [2020-11-30 02:58:26,226 INFO L226 Difference]: Without dead ends: 112 [2020-11-30 02:58:26,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 75 SyntacticMatches, 13 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 27.9s TimeCoverageRelationStatistics Valid=802, Invalid=1648, Unknown=0, NotChecked=0, Total=2450 [2020-11-30 02:58:26,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-11-30 02:58:26,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 76. [2020-11-30 02:58:26,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-30 02:58:26,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2020-11-30 02:58:26,238 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 39 [2020-11-30 02:58:26,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:58:26,238 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2020-11-30 02:58:26,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-11-30 02:58:26,239 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2020-11-30 02:58:26,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-30 02:58:26,239 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:58:26,239 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:58:26,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:58:26,459 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_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]=== [2020-11-30 02:58:26,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:58:26,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1363956906, now seen corresponding path program 1 times [2020-11-30 02:58:26,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:58:26,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266535023] [2020-11-30 02:58:26,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:58:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:58:26,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:58:26,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266535023] [2020-11-30 02:58:26,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123554170] [2020-11-30 02:58:26,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba975ab6-ae64-4073-9a4a-31406c84aa40/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:58:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:58:26,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 02:58:26,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:58:26,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:58:26,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:58:26,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:58:26,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1689690843] [2020-11-30 02:58:26,739 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2020-11-30 02:58:26,739 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:58:26,740 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:58:26,741 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:58:26,741 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:58:26,948 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2020-11-30 02:58:27,048 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2020-11-30 02:58:27,455 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-11-30 02:58:27,468 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-11-30 02:58:27,613 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2020-11-30 02:58:27,748 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:58:28,546 WARN L193 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 128 [2020-11-30 02:58:28,722 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-11-30 02:58:28,897 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2020-11-30 02:58:29,093 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-11-30 02:58:29,289 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-11-30 02:58:29,487 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2020-11-30 02:58:29,769 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2020-11-30 02:58:29,992 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2020-11-30 02:58:30,216 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2020-11-30 02:58:30,446 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2020-11-30 02:58:30,687 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2020-11-30 02:58:30,932 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 64 [2020-11-30 02:58:31,218 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2020-11-30 02:58:31,548 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 79 [2020-11-30 02:58:31,917 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2020-11-30 02:58:32,338 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 88 [2020-11-30 02:58:32,795 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 94 [2020-11-30 02:58:33,413 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 97 [2020-11-30 02:58:33,935 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 99 [2020-11-30 02:58:34,484 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 105 [2020-11-30 02:58:35,080 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 111 [2020-11-30 02:58:35,886 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 117 [2020-11-30 02:58:36,575 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 121 [2020-11-30 02:58:37,087 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-11-30 02:58:37,489 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-11-30 02:58:38,217 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 124 [2020-11-30 02:58:38,628 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-11-30 02:58:39,069 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-11-30 02:58:39,875 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 131 [2020-11-30 02:58:40,744 WARN L193 SmtUtils]: Spent 725.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 138 [2020-11-30 02:58:41,634 WARN L193 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 138 [2020-11-30 02:58:42,631 WARN L193 SmtUtils]: Spent 845.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 143 [2020-11-30 02:58:43,686 WARN L193 SmtUtils]: Spent 897.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 149 [2020-11-30 02:58:44,811 WARN L193 SmtUtils]: Spent 955.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 154 [2020-11-30 02:58:45,997 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 186 DAG size of output: 161 [2020-11-30 02:58:46,175 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:58:46,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:58:46,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2020-11-30 02:58:46,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914617061] [2020-11-30 02:58:46,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:58:46,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:58:46,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:58:46,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=1249, Unknown=0, NotChecked=0, Total=1640 [2020-11-30 02:58:46,177 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand 6 states. [2020-11-30 02:58:46,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:58:46,293 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2020-11-30 02:58:46,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:58:46,294 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-11-30 02:58:46,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:58:46,295 INFO L225 Difference]: With dead ends: 76 [2020-11-30 02:58:46,295 INFO L226 Difference]: Without dead ends: 74 [2020-11-30 02:58:46,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 83 SyntacticMatches, 12 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=415, Invalid=1391, Unknown=0, NotChecked=0, Total=1806 [2020-11-30 02:58:46,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-30 02:58:46,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 51. [2020-11-30 02:58:46,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-30 02:58:46,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2020-11-30 02:58:46,302 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 43 [2020-11-30 02:58:46,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:58:46,302 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2020-11-30 02:58:46,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:58:46,302 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2020-11-30 02:58:46,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-30 02:58:46,303 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:58:46,303 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:58:46,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:58:46,504 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_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]=== [2020-11-30 02:58:46,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:58:46,504 INFO L82 PathProgramCache]: Analyzing trace with hash 446395462, now seen corresponding path program 1 times [2020-11-30 02:58:46,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:58:46,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145968358] [2020-11-30 02:58:46,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:58:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:58:46,559 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 02:58:46,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145968358] [2020-11-30 02:58:46,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:58:46,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 02:58:46,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598336056] [2020-11-30 02:58:46,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:58:46,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:58:46,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:58:46,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:58:46,560 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand 5 states. [2020-11-30 02:58:46,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:58:46,724 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2020-11-30 02:58:46,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 02:58:46,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-11-30 02:58:46,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:58:46,725 INFO L225 Difference]: With dead ends: 70 [2020-11-30 02:58:46,725 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:58:46,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:58:46,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:58:46,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:58:46,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:58:46,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:58:46,727 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2020-11-30 02:58:46,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:58:46,727 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:58:46,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:58:46,727 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:58:46,727 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:58:46,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-11-30 02:58:46,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:58:47,054 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 262 [2020-11-30 02:58:47,286 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 250 [2020-11-30 02:58:47,792 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 84 [2020-11-30 02:58:49,034 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 258 DAG size of output: 62 [2020-11-30 02:58:49,445 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 90 [2020-11-30 02:58:50,152 WARN L193 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 69 [2020-11-30 02:58:50,158 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,158 INFO L274 CegarLoopResult]: For program point L234(lines 234 338) no Hoare annotation was computed. [2020-11-30 02:58:50,158 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,158 INFO L274 CegarLoopResult]: For program point L135(lines 135 397) no Hoare annotation was computed. [2020-11-30 02:58:50,158 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:58:50,158 INFO L274 CegarLoopResult]: For program point L53(lines 53 433) no Hoare annotation was computed. [2020-11-30 02:58:50,158 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,159 INFO L274 CegarLoopResult]: For program point L4-2(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,159 INFO L274 CegarLoopResult]: For program point L4-4(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,159 INFO L274 CegarLoopResult]: For program point L384(lines 384 393) no Hoare annotation was computed. [2020-11-30 02:58:50,159 INFO L274 CegarLoopResult]: For program point L4-6(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,159 INFO L274 CegarLoopResult]: For program point L4-8(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,159 INFO L274 CegarLoopResult]: For program point L4-10(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,159 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,159 INFO L274 CegarLoopResult]: For program point L4-12(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,159 INFO L274 CegarLoopResult]: For program point L4-14(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,159 INFO L274 CegarLoopResult]: For program point L4-16(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,160 INFO L274 CegarLoopResult]: For program point L4-18(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,160 INFO L270 CegarLoopResult]: At program point L401(lines 131 402) the Hoare annotation is: (let ((.cse1 (let ((.cse3 (<= 1 ULTIMATE.start_main_~main__cp~0)) (.cse4 (< 0 ULTIMATE.start_main_~main__scheme~0)) (.cse5 (< ULTIMATE.start_main_~main__cp~0 ULTIMATE.start_main_~main__urilen~0)) (.cse6 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0))) (.cse7 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~3 0))) (.cse8 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~2 0))) (.cse9 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 0)))) (or (and .cse3 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~2 1) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse3 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~16 0)) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9)))) (.cse0 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~3 1))) (or (and (= (+ ULTIMATE.start_main_~main__cp~0 1) ULTIMATE.start_main_~main__urilen~0) .cse0 .cse1) (let ((.cse2 (select |#memory_int| |#t~string4.base|))) (and (<= ULTIMATE.start_main_~main__tokenlen~0 1000000) (<= ULTIMATE.start_main_~main__urilen~0 1000000) (= ~__return_375~0 0) (= (select |#valid| 0) 0) (= (select |#valid| |#t~string5.base|) 1) (= (select |#valid| |#t~string4.base|) 1) (= |#t~string5.offset| 0) (= 12 (select |#length| |#t~string6.base|)) (< |#StackHeapBarrier| |#t~string5.base|) (= |#NULL.offset| 0) (<= ULTIMATE.start_main_~main__scheme~0 1000000) (= 0 |#t~string4.offset|) (= 2 (select |#length| |#t~string4.base|)) (= 41 (select |#length| |#t~string5.base|)) (= |#NULL.base| 0) .cse1 (= (select |#valid| |#t~string6.base|) 1) (= 48 (select .cse2 |#t~string4.offset|)) (< 0 ULTIMATE.start_main_~main__tokenlen~0) (= ~__return_main~0 0) (< |#StackHeapBarrier| |#t~string6.base|) .cse0 (< |#StackHeapBarrier| |#t~string4.base|) (< 0 |#StackHeapBarrier|) (= |#t~string6.offset| 0) (= (select .cse2 (+ |#t~string4.offset| 1)) 0))))) [2020-11-30 02:58:50,160 INFO L274 CegarLoopResult]: For program point L4-20(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,161 INFO L274 CegarLoopResult]: For program point L4-22(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,161 INFO L274 CegarLoopResult]: For program point L4-24(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,161 INFO L274 CegarLoopResult]: For program point L4-26(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,161 INFO L274 CegarLoopResult]: For program point L104(lines 104 411) no Hoare annotation was computed. [2020-11-30 02:58:50,161 INFO L274 CegarLoopResult]: For program point L4-28(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,161 INFO L274 CegarLoopResult]: For program point L71(lines 71 416) no Hoare annotation was computed. [2020-11-30 02:58:50,161 INFO L274 CegarLoopResult]: For program point L4-30(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,161 INFO L274 CegarLoopResult]: For program point L4-32(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,161 INFO L274 CegarLoopResult]: For program point L4-34(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,161 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,162 INFO L274 CegarLoopResult]: For program point L253(lines 253 329) no Hoare annotation was computed. [2020-11-30 02:58:50,162 INFO L274 CegarLoopResult]: For program point L187(lines 187 355) no Hoare annotation was computed. [2020-11-30 02:58:50,162 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,162 INFO L274 CegarLoopResult]: For program point L270(lines 270 322) no Hoare annotation was computed. [2020-11-30 02:58:50,162 INFO L274 CegarLoopResult]: For program point L204(lines 204 353) no Hoare annotation was computed. [2020-11-30 02:58:50,162 INFO L274 CegarLoopResult]: For program point L155(lines 155 360) no Hoare annotation was computed. [2020-11-30 02:58:50,162 INFO L274 CegarLoopResult]: For program point L23(lines 23 438) no Hoare annotation was computed. [2020-11-30 02:58:50,162 INFO L274 CegarLoopResult]: For program point L123(lines 123 403) no Hoare annotation was computed. [2020-11-30 02:58:50,162 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,163 INFO L274 CegarLoopResult]: For program point L41(lines 41 435) no Hoare annotation was computed. [2020-11-30 02:58:50,163 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:58:50,163 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,163 INFO L274 CegarLoopResult]: For program point L372(lines 372 395) no Hoare annotation was computed. [2020-11-30 02:58:50,163 INFO L274 CegarLoopResult]: For program point L306(lines 306 316) no Hoare annotation was computed. [2020-11-30 02:58:50,163 INFO L274 CegarLoopResult]: For program point L224(lines 224 344) no Hoare annotation was computed. [2020-11-30 02:58:50,163 INFO L274 CegarLoopResult]: For program point L59(lines 59 432) no Hoare annotation was computed. [2020-11-30 02:58:50,163 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,163 INFO L274 CegarLoopResult]: For program point L241(lines 241 331) no Hoare annotation was computed. [2020-11-30 02:58:50,163 INFO L274 CegarLoopResult]: For program point L175(lines 175 357) no Hoare annotation was computed. [2020-11-30 02:58:50,164 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,164 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,164 INFO L274 CegarLoopResult]: For program point L143(lines 143 362) no Hoare annotation was computed. [2020-11-30 02:58:50,164 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,164 INFO L274 CegarLoopResult]: For program point L61(lines 61 427) no Hoare annotation was computed. [2020-11-30 02:58:50,164 INFO L274 CegarLoopResult]: For program point L111(lines 111 405) no Hoare annotation was computed. [2020-11-30 02:58:50,164 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,165 INFO L270 CegarLoopResult]: At program point L392(lines 129 403) the Hoare annotation is: (let ((.cse6 (select |#memory_int| |#t~string4.base|))) (and (<= ULTIMATE.start_main_~main__tokenlen~0 1000000) (<= ULTIMATE.start_main_~main__urilen~0 1000000) (= ~__return_375~0 0) (= (select |#valid| 0) 0) (= (select |#valid| |#t~string5.base|) 1) (= (select |#valid| |#t~string4.base|) 1) (= |#t~string5.offset| 0) (= 12 (select |#length| |#t~string6.base|)) (< |#StackHeapBarrier| |#t~string5.base|) (= |#NULL.offset| 0) (let ((.cse0 (<= 1 ULTIMATE.start_main_~main__cp~0)) (.cse1 (< 0 ULTIMATE.start_main_~main__scheme~0)) (.cse2 (< ULTIMATE.start_main_~main__cp~0 ULTIMATE.start_main_~main__urilen~0)) (.cse3 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~3 1)) (.cse4 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0))) (.cse5 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 0)))) (or (and .cse0 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~2 1) .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse2 .cse3 .cse4 (<= 1 ULTIMATE.start_main_~__VERIFIER_assert__cond~16) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~2 0)) .cse5 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~17 0))))) (<= ULTIMATE.start_main_~main__scheme~0 1000000) (= 0 |#t~string4.offset|) (= 2 (select |#length| |#t~string4.base|)) (= 41 (select |#length| |#t~string5.base|)) (= |#NULL.base| 0) (= (select |#valid| |#t~string6.base|) 1) (= 48 (select .cse6 |#t~string4.offset|)) (< 0 ULTIMATE.start_main_~main__tokenlen~0) (= ~__return_main~0 0) (< |#StackHeapBarrier| |#t~string6.base|) (< |#StackHeapBarrier| |#t~string4.base|) (< 0 |#StackHeapBarrier|) (= |#t~string6.offset| 0) (= (select .cse6 (+ |#t~string4.offset| 1)) 0))) [2020-11-30 02:58:50,165 INFO L274 CegarLoopResult]: For program point L194(lines 194 354) no Hoare annotation was computed. [2020-11-30 02:58:50,165 INFO L274 CegarLoopResult]: For program point L95(lines 95 412) no Hoare annotation was computed. [2020-11-30 02:58:50,165 INFO L274 CegarLoopResult]: For program point L29(lines 29 437) no Hoare annotation was computed. [2020-11-30 02:58:50,165 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,165 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,166 INFO L270 CegarLoopResult]: At program point L327(lines 262 328) the Hoare annotation is: (and (let ((.cse0 (let ((.cse1 (<= 1 ULTIMATE.start_main_~main__cp~0)) (.cse2 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~7 0))) (.cse3 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~6 0))) (.cse4 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~11 0))) (.cse5 (< 0 ULTIMATE.start_main_~main__scheme~0)) (.cse6 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~5 0))) (.cse7 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~2 0))) (.cse8 (<= 1 ULTIMATE.start_main_~__VERIFIER_assert__cond~4)) (.cse9 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~9 1)) (.cse10 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~8 0))) (.cse11 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~3 1)) (.cse12 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0))) (.cse13 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 0)))) (or (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (<= (+ ULTIMATE.start_main_~main__c~0 2) ULTIMATE.start_main_~main__tokenlen~0) .cse11 .cse12 .cse13) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~12 0)) .cse11 .cse12 .cse13))))) (or (and (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0)) .cse0 (<= 1 ULTIMATE.start_main_~main__c~0)) (and .cse0 (= ULTIMATE.start_main_~main__c~0 0)))) (< (+ ULTIMATE.start_main_~main__cp~0 1) ULTIMATE.start_main_~main__urilen~0) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~10 1)) [2020-11-30 02:58:50,166 INFO L274 CegarLoopResult]: For program point L294(lines 294 318) no Hoare annotation was computed. [2020-11-30 02:58:50,166 INFO L274 CegarLoopResult]: For program point L162(lines 162 359) no Hoare annotation was computed. [2020-11-30 02:58:50,166 INFO L274 CegarLoopResult]: For program point L63(lines 63 422) no Hoare annotation was computed. [2020-11-30 02:58:50,166 INFO L270 CegarLoopResult]: At program point L410(lines 104 411) the Hoare annotation is: (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0)) [2020-11-30 02:58:50,166 INFO L274 CegarLoopResult]: For program point L212(lines 212 346) no Hoare annotation was computed. [2020-11-30 02:58:50,166 INFO L274 CegarLoopResult]: For program point L47(lines 47 434) no Hoare annotation was computed. [2020-11-30 02:58:50,166 INFO L274 CegarLoopResult]: For program point L262(lines 262 328) no Hoare annotation was computed. [2020-11-30 02:58:50,166 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,167 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,167 INFO L274 CegarLoopResult]: For program point L65(lines 65 417) no Hoare annotation was computed. [2020-11-30 02:58:50,167 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,167 INFO L274 CegarLoopResult]: For program point L83(lines 83 414) no Hoare annotation was computed. [2020-11-30 02:58:50,167 INFO L270 CegarLoopResult]: At program point L315(lines 230 344) the Hoare annotation is: (let ((.cse3 (<= 1 ULTIMATE.start_main_~main__cp~0)) (.cse4 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~7 0))) (.cse5 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~6 0))) (.cse6 (< 0 ULTIMATE.start_main_~main__scheme~0)) (.cse8 (< ULTIMATE.start_main_~main__cp~0 ULTIMATE.start_main_~main__urilen~0)) (.cse9 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~5 0))) (.cse10 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~2 0))) (.cse11 (<= 1 ULTIMATE.start_main_~__VERIFIER_assert__cond~4)) (.cse0 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~9 1)) (.cse13 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~8 0))) (.cse14 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~3 1)) (.cse15 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0))) (.cse16 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 0))) (.cse2 (= ULTIMATE.start_main_~main__c~0 0))) (or (and (<= 1 ULTIMATE.start_main_~__VERIFIER_assert__cond~10) .cse0 (let ((.cse1 (let ((.cse7 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~11 0))) (.cse12 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~10 0)))) (or (and .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 (<= (+ ULTIMATE.start_main_~main__c~0 2) ULTIMATE.start_main_~main__tokenlen~0) .cse14 .cse15 .cse16) (and .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~12 0)) .cse14 .cse15 .cse16))))) (or (and .cse1 .cse2) (and (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0)) (<= 1 ULTIMATE.start_main_~main__c~0) .cse1)))) (and .cse3 .cse4 .cse5 .cse6 .cse8 .cse9 .cse10 .cse11 .cse0 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~8 1) .cse13 .cse14 .cse15 .cse16 (< (+ ULTIMATE.start_main_~main__cp~0 1) ULTIMATE.start_main_~main__urilen~0) .cse2))) [2020-11-30 02:58:50,167 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:58:50,167 INFO L274 CegarLoopResult]: For program point L282(lines 282 320) no Hoare annotation was computed. [2020-11-30 02:58:50,168 INFO L277 CegarLoopResult]: At program point L431(lines 13 439) the Hoare annotation is: true [2020-11-30 02:58:50,168 INFO L274 CegarLoopResult]: For program point L35(lines 35 436) no Hoare annotation was computed. [2020-11-30 02:58:50,180 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:58:50,180 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,181 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:58:50,181 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:58:50,181 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:58:50,181 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:58:50,181 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:58:50,181 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,182 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,182 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,182 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:58:50,189 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:58:50,190 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,190 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:58:50,191 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:58:50,191 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:58:50,191 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:58:50,191 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:58:50,192 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,192 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,192 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,192 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:58:50,200 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:58:50,201 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,201 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:58:50,201 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:58:50,201 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:58:50,202 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:58:50,202 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:58:50,202 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,203 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,203 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,203 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:58:50,205 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:58:50,206 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,206 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:58:50,206 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:58:50,207 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:58:50,207 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:58:50,207 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:58:50,208 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,208 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,208 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,208 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:58:50,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:58:50 BoogieIcfgContainer [2020-11-30 02:58:50,217 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:58:50,218 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:58:50,218 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:58:50,218 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:58:50,219 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:57:37" (3/4) ... [2020-11-30 02:58:50,222 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:58:50,238 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-30 02:58:50,239 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 02:58:50,240 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:58:50,240 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:58:50,318 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ba975ab6-ae64-4073-9a4a-31406c84aa40/bin/utaipan/witness.graphml [2020-11-30 02:58:50,318 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:58:50,319 INFO L168 Benchmark]: Toolchain (without parser) took 74618.85 ms. Allocated memory was 77.6 MB in the beginning and 207.6 MB in the end (delta: 130.0 MB). Free memory was 47.5 MB in the beginning and 132.4 MB in the end (delta: -84.9 MB). Peak memory consumption was 45.7 MB. Max. memory is 16.1 GB. [2020-11-30 02:58:50,320 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 77.6 MB. Free memory was 49.9 MB in the beginning and 49.8 MB in the end (delta: 29.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:58:50,320 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.75 ms. Allocated memory was 77.6 MB in the beginning and 96.5 MB in the end (delta: 18.9 MB). Free memory was 47.3 MB in the beginning and 70.7 MB in the end (delta: -23.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:58:50,320 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.67 ms. Allocated memory is still 96.5 MB. Free memory was 70.7 MB in the beginning and 68.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:58:50,321 INFO L168 Benchmark]: Boogie Preprocessor took 29.84 ms. Allocated memory is still 96.5 MB. Free memory was 68.6 MB in the beginning and 67.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:58:50,321 INFO L168 Benchmark]: RCFGBuilder took 907.74 ms. Allocated memory is still 96.5 MB. Free memory was 67.0 MB in the beginning and 70.4 MB in the end (delta: -3.3 MB). Peak memory consumption was 33.8 MB. Max. memory is 16.1 GB. [2020-11-30 02:58:50,322 INFO L168 Benchmark]: TraceAbstraction took 73165.97 ms. Allocated memory was 96.5 MB in the beginning and 207.6 MB in the end (delta: 111.1 MB). Free memory was 69.8 MB in the beginning and 140.8 MB in the end (delta: -71.0 MB). Peak memory consumption was 124.0 MB. Max. memory is 16.1 GB. [2020-11-30 02:58:50,322 INFO L168 Benchmark]: Witness Printer took 100.31 ms. Allocated memory is still 207.6 MB. Free memory was 140.8 MB in the beginning and 132.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:58:50,324 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 77.6 MB. Free memory was 49.9 MB in the beginning and 49.8 MB in the end (delta: 29.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 359.75 ms. Allocated memory was 77.6 MB in the beginning and 96.5 MB in the end (delta: 18.9 MB). Free memory was 47.3 MB in the beginning and 70.7 MB in the end (delta: -23.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.67 ms. Allocated memory is still 96.5 MB. Free memory was 70.7 MB in the beginning and 68.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.84 ms. Allocated memory is still 96.5 MB. Free memory was 68.6 MB in the beginning and 67.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 907.74 ms. Allocated memory is still 96.5 MB. Free memory was 67.0 MB in the beginning and 70.4 MB in the end (delta: -3.3 MB). Peak memory consumption was 33.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 73165.97 ms. Allocated memory was 96.5 MB in the beginning and 207.6 MB in the end (delta: 111.1 MB). Free memory was 69.8 MB in the beginning and 140.8 MB in the end (delta: -71.0 MB). Peak memory consumption was 124.0 MB. Max. memory is 16.1 GB. * Witness Printer took 100.31 ms. Allocated memory is still 207.6 MB. Free memory was 140.8 MB in the beginning and 132.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * 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 - 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 18 specifications checked. All of them hold - InvariantResult [Line: 129]: Loop Invariant [2020-11-30 02:58:50,340 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:58:50,342 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,343 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:58:50,343 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:58:50,343 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:58:50,343 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:58:50,343 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:58:50,344 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,344 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,344 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,344 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:58:50,346 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:58:50,349 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,349 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:58:50,350 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:58:50,350 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:58:50,350 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:58:50,350 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:58:50,351 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,351 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,351 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,351 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((((((((((((((((((((((main__tokenlen <= 1000000 && main__urilen <= 1000000) && __return_375 == 0) && \valid[0] == 0) && \valid["apache-escape-absolute.i.v+cfa-reducer.c"] == 1) && \valid["0"] == 1) && "apache-escape-absolute.i.v+cfa-reducer.c" == 0) && 12 == unknown-#length-unknown["reach_error"]) && unknown-#StackHeapBarrier-unknown < "apache-escape-absolute.i.v+cfa-reducer.c") && #NULL == 0) && (((((((1 <= main__cp && __VERIFIER_assert__cond == 1) && 0 < main__scheme) && main__cp < main__urilen) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) || ((((((((1 <= main__cp && 0 < main__scheme) && main__cp < main__urilen) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && 1 <= __VERIFIER_assert__cond) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)))) && main__scheme <= 1000000) && 0 == "0") && 2 == unknown-#length-unknown["0"]) && 41 == unknown-#length-unknown["apache-escape-absolute.i.v+cfa-reducer.c"]) && #NULL == 0) && \valid["reach_error"] == 1) && 48 == unknown-#memory_int-unknown["0"]["0"]) && 0 < main__tokenlen) && __return_main == 0) && unknown-#StackHeapBarrier-unknown < "reach_error") && unknown-#StackHeapBarrier-unknown < "0") && 0 < unknown-#StackHeapBarrier-unknown) && "reach_error" == 0) && unknown-#memory_int-unknown["0"]["0" + 1] == 0 - InvariantResult [Line: 262]: Loop Invariant Derived loop invariant: ((((!(__VERIFIER_assert__cond == 0) && ((((((((((((((1 <= main__cp && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 1 <= __VERIFIER_assert__cond) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && main__c + 2 <= main__tokenlen) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) || (((((((((((((1 <= main__cp && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 1 <= __VERIFIER_assert__cond) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)))) && 1 <= main__c) || (((((((((((((((1 <= main__cp && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 1 <= __VERIFIER_assert__cond) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && main__c + 2 <= main__tokenlen) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) || (((((((((((((1 <= main__cp && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 1 <= __VERIFIER_assert__cond) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0))) && main__c == 0)) && main__cp + 1 < main__urilen) && __VERIFIER_assert__cond == 1 - InvariantResult [Line: 131]: Loop Invariant [2020-11-30 02:58:50,358 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:58:50,359 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,359 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:58:50,359 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:58:50,360 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:58:50,360 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:58:50,361 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:58:50,361 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,361 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,361 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,361 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:58:50,363 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:58:50,367 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,367 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:58:50,368 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:58:50,368 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:58:50,368 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:58:50,368 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:58:50,368 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,369 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,369 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:58:50,369 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((main__cp + 1 == main__urilen && __VERIFIER_assert__cond == 1) && ((((((((1 <= main__cp && __VERIFIER_assert__cond == 1) && 0 < main__scheme) && main__cp < main__urilen) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) || (((((((1 <= main__cp && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && main__cp < main__urilen) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)))) || (((((((((((((((((((((((((main__tokenlen <= 1000000 && main__urilen <= 1000000) && __return_375 == 0) && \valid[0] == 0) && \valid["apache-escape-absolute.i.v+cfa-reducer.c"] == 1) && \valid["0"] == 1) && "apache-escape-absolute.i.v+cfa-reducer.c" == 0) && 12 == unknown-#length-unknown["reach_error"]) && unknown-#StackHeapBarrier-unknown < "apache-escape-absolute.i.v+cfa-reducer.c") && #NULL == 0) && main__scheme <= 1000000) && 0 == "0") && 2 == unknown-#length-unknown["0"]) && 41 == unknown-#length-unknown["apache-escape-absolute.i.v+cfa-reducer.c"]) && #NULL == 0) && ((((((((1 <= main__cp && __VERIFIER_assert__cond == 1) && 0 < main__scheme) && main__cp < main__urilen) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) || (((((((1 <= main__cp && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && main__cp < main__urilen) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)))) && \valid["reach_error"] == 1) && 48 == unknown-#memory_int-unknown["0"]["0"]) && 0 < main__tokenlen) && __return_main == 0) && unknown-#StackHeapBarrier-unknown < "reach_error") && __VERIFIER_assert__cond == 1) && unknown-#StackHeapBarrier-unknown < "0") && 0 < unknown-#StackHeapBarrier-unknown) && "reach_error" == 0) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) - InvariantResult [Line: 230]: Loop Invariant Derived loop invariant: ((1 <= __VERIFIER_assert__cond && __VERIFIER_assert__cond == 1) && (((((((((((((((((1 <= main__cp && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && !(__VERIFIER_assert__cond == 0)) && main__cp < main__urilen) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 1 <= __VERIFIER_assert__cond) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && main__c + 2 <= main__tokenlen) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) || ((((((((((((((1 <= main__cp && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && !(__VERIFIER_assert__cond == 0)) && main__cp < main__urilen) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 1 <= __VERIFIER_assert__cond) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0))) && main__c == 0) || ((!(__VERIFIER_assert__cond == 0) && 1 <= main__c) && (((((((((((((((1 <= main__cp && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && !(__VERIFIER_assert__cond == 0)) && main__cp < main__urilen) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 1 <= __VERIFIER_assert__cond) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && main__c + 2 <= main__tokenlen) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) || ((((((((((((((1 <= main__cp && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && !(__VERIFIER_assert__cond == 0)) && main__cp < main__urilen) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 1 <= __VERIFIER_assert__cond) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)))))) || (((((((((((((((1 <= main__cp && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && main__cp < main__urilen) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 1 <= __VERIFIER_assert__cond) && __VERIFIER_assert__cond == 1) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && main__cp + 1 < main__urilen) && main__c == 0) - InvariantResult [Line: 104]: Loop Invariant Derived loop invariant: !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 80 locations, 18 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 69.5s, OverallIterations: 24, TraceHistogramMax: 2, AutomataDifference: 17.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1223 SDtfs, 3325 SDslu, 1436 SDs, 0 SdLazy, 1318 SolverSat, 231 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 574 GetRequests, 300 SyntacticMatches, 36 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1250 ImplicationChecksByTransitivity, 60.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred 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: 0.2s AutomataMinimizationTime, 24 MinimizatonAttempts, 352 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 16 NumberOfFragments, 930 HoareAnnotationTreeSize, 6 FomulaSimplifications, 1624086 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 6 FomulaSimplificationsInter, 65228 FormulaSimplificationTreeSizeReductionInter, 2.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 811 NumberOfCodeBlocks, 811 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 912 ConstructedInterpolants, 0 QuantifiedInterpolants, 69729 SizeOfPredicates, 28 NumberOfNonLiveVariables, 558 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 32 InterpolantComputations, 20 PerfectInterpolantSequences, 11/38 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: OVERALL_TIME[ms]: 636, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 35, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 41, TOOLS_POST_TIME[ms]: 123, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 41, TOOLS_QUANTIFIERELIM_TIME[ms]: 111, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 98, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 80, FLUID_YES_ANSWERS: 2, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 2, DOMAIN_ALPHA_TIME[ms]: 394, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME[ms]: 4, DOMAIN_ISBOTTOM_APPLICATIONS: 35, DOMAIN_ISBOTTOM_TIME[ms]: 83, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 11, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 11, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 0, PATH_EXPR_TIME[ms]: 1, REGEX_TO_DAG_TIME[ms]: 0, DAG_COMPRESSION_TIME[ms]: 20, DAG_COMPRESSION_PROCESSED_NODES: 718, DAG_COMPRESSION_RETAINED_NODES: 85, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...