./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_36925a87-4d57-4f81-9a95-24489d0c6d94/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_36925a87-4d57-4f81-9a95-24489d0c6d94/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_36925a87-4d57-4f81-9a95-24489d0c6d94/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_36925a87-4d57-4f81-9a95-24489d0c6d94/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_36925a87-4d57-4f81-9a95-24489d0c6d94/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_36925a87-4d57-4f81-9a95-24489d0c6d94/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4b3c25b2e1855c4c0a30872aa894c42326e9c019 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:57:14,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:57:14,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:57:14,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:57:14,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:57:14,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:57:14,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:57:14,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:57:14,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:57:14,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:57:14,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:57:14,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:57:14,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:57:14,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:57:14,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:57:14,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:57:14,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:57:14,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:57:14,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:57:14,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:57:14,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:57:14,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:57:14,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:57:14,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:57:14,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:57:14,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:57:14,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:57:14,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:57:14,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:57:14,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:57:14,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:57:14,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:57:14,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:57:14,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:57:14,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:57:14,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:57:14,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:57:14,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:57:14,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:57:14,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:57:14,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:57:14,433 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_36925a87-4d57-4f81-9a95-24489d0c6d94/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:57:14,470 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:57:14,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:57:14,471 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:57:14,471 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:57:14,471 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:57:14,472 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:57:14,472 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:57:14,472 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:57:14,472 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:57:14,472 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:57:14,473 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:57:14,474 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:57:14,474 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:57:14,474 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:57:14,474 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:57:14,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:57:14,475 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:57:14,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:57:14,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:57:14,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:57:14,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:57:14,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:57:14,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:57:14,476 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:57:14,476 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:57:14,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:57:14,477 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:57:14,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:57:14,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:57:14,479 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:57:14,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:57:14,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:57:14,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:57:14,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:57:14,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:57:14,480 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:57:14,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:57:14,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:57:14,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:57:14,481 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:57:14,481 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_36925a87-4d57-4f81-9a95-24489d0c6d94/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_36925a87-4d57-4f81-9a95-24489d0c6d94/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b3c25b2e1855c4c0a30872aa894c42326e9c019 [2020-11-22 12:57:14,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:57:14,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:57:14,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:57:14,753 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:57:14,753 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:57:14,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_36925a87-4d57-4f81-9a95-24489d0c6d94/bin/utaipan/../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-11-22 12:57:14,827 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_36925a87-4d57-4f81-9a95-24489d0c6d94/bin/utaipan/data/d5c5a9e4f/396d9b4068f74e9c84ebe7b74469ff16/FLAG7be499932 [2020-11-22 12:57:15,315 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:57:15,315 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_36925a87-4d57-4f81-9a95-24489d0c6d94/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-11-22 12:57:15,341 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_36925a87-4d57-4f81-9a95-24489d0c6d94/bin/utaipan/data/d5c5a9e4f/396d9b4068f74e9c84ebe7b74469ff16/FLAG7be499932 [2020-11-22 12:57:15,658 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_36925a87-4d57-4f81-9a95-24489d0c6d94/bin/utaipan/data/d5c5a9e4f/396d9b4068f74e9c84ebe7b74469ff16 [2020-11-22 12:57:15,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:57:15,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:57:15,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:15,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:57:15,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:57:15,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:15" (1/1) ... [2020-11-22 12:57:15,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fddbf6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:15, skipping insertion in model container [2020-11-22 12:57:15,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:15" (1/1) ... [2020-11-22 12:57:15,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:57:15,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:57:16,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:16,131 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:57:16,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:16,251 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:57:16,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:16 WrapperNode [2020-11-22 12:57:16,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:16,253 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:16,253 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:57:16,254 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:57:16,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:16" (1/1) ... [2020-11-22 12:57:16,281 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:16" (1/1) ... [2020-11-22 12:57:16,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:16,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:57:16,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:57:16,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:57:16,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:16" (1/1) ... [2020-11-22 12:57:16,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:16" (1/1) ... [2020-11-22 12:57:16,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:16" (1/1) ... [2020-11-22 12:57:16,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:16" (1/1) ... [2020-11-22 12:57:16,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:16" (1/1) ... [2020-11-22 12:57:16,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:16" (1/1) ... [2020-11-22 12:57:16,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:16" (1/1) ... [2020-11-22 12:57:16,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:57:16,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:57:16,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:57:16,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:57:16,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_36925a87-4d57-4f81-9a95-24489d0c6d94/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:57:16,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:57:16,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:57:16,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:57:16,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:57:17,495 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:57:17,495 INFO L298 CfgBuilder]: Removed 36 assume(true) statements. [2020-11-22 12:57:17,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:17 BoogieIcfgContainer [2020-11-22 12:57:17,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:57:17,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:57:17,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:57:17,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:57:17,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:57:15" (1/3) ... [2020-11-22 12:57:17,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@609b66fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:17, skipping insertion in model container [2020-11-22 12:57:17,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:16" (2/3) ... [2020-11-22 12:57:17,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@609b66fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:17, skipping insertion in model container [2020-11-22 12:57:17,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:17" (3/3) ... [2020-11-22 12:57:17,505 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.p+lhb-reducer.c [2020-11-22 12:57:17,515 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:57:17,519 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-11-22 12:57:17,534 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-11-22 12:57:17,559 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:57:17,559 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:57:17,559 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:57:17,560 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:57:17,560 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:57:17,560 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:57:17,560 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:57:17,560 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:57:17,576 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states. [2020-11-22 12:57:17,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 12:57:17,581 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:17,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 12:57:17,582 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:17,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:17,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1720831082, now seen corresponding path program 1 times [2020-11-22 12:57:17,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:17,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373412951] [2020-11-22 12:57:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:17,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:17,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373412951] [2020-11-22 12:57:17,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:17,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:57:17,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768036156] [2020-11-22 12:57:17,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:57:17,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:17,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:57:17,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:57:17,782 INFO L87 Difference]: Start difference. First operand 118 states. Second operand 4 states. [2020-11-22 12:57:18,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:18,129 INFO L93 Difference]: Finished difference Result 126 states and 200 transitions. [2020-11-22 12:57:18,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:57:18,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-22 12:57:18,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:18,144 INFO L225 Difference]: With dead ends: 126 [2020-11-22 12:57:18,145 INFO L226 Difference]: Without dead ends: 113 [2020-11-22 12:57:18,147 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 [2020-11-22 12:57:18,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-11-22 12:57:18,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-11-22 12:57:18,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-22 12:57:18,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 134 transitions. [2020-11-22 12:57:18,185 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 134 transitions. Word has length 6 [2020-11-22 12:57:18,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:18,185 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 134 transitions. [2020-11-22 12:57:18,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:57:18,185 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 134 transitions. [2020-11-22 12:57:18,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 12:57:18,186 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:18,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:18,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:57:18,191 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:18,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:18,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1806162027, now seen corresponding path program 1 times [2020-11-22 12:57:18,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:18,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039486818] [2020-11-22 12:57:18,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:18,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:18,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039486818] [2020-11-22 12:57:18,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:18,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-22 12:57:18,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290872720] [2020-11-22 12:57:18,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:57:18,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:18,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:57:18,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:57:18,287 INFO L87 Difference]: Start difference. First operand 113 states and 134 transitions. Second operand 5 states. [2020-11-22 12:57:18,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:18,590 INFO L93 Difference]: Finished difference Result 116 states and 137 transitions. [2020-11-22 12:57:18,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:57:18,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-11-22 12:57:18,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:18,594 INFO L225 Difference]: With dead ends: 116 [2020-11-22 12:57:18,594 INFO L226 Difference]: Without dead ends: 108 [2020-11-22 12:57:18,595 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 [2020-11-22 12:57:18,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-11-22 12:57:18,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-11-22 12:57:18,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-11-22 12:57:18,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 120 transitions. [2020-11-22 12:57:18,605 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 120 transitions. Word has length 7 [2020-11-22 12:57:18,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:18,606 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 120 transitions. [2020-11-22 12:57:18,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:57:18,606 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 120 transitions. [2020-11-22 12:57:18,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 12:57:18,607 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:18,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:18,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:57:18,607 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:18,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:18,608 INFO L82 PathProgramCache]: Analyzing trace with hash 236410579, now seen corresponding path program 1 times [2020-11-22 12:57:18,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:18,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223176840] [2020-11-22 12:57:18,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:18,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:18,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223176840] [2020-11-22 12:57:18,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:18,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-22 12:57:18,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984794211] [2020-11-22 12:57:18,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:57:18,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:18,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:57:18,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:57:18,709 INFO L87 Difference]: Start difference. First operand 108 states and 120 transitions. Second operand 5 states. [2020-11-22 12:57:18,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:18,981 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2020-11-22 12:57:18,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:57:18,983 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-22 12:57:18,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:18,984 INFO L225 Difference]: With dead ends: 108 [2020-11-22 12:57:18,984 INFO L226 Difference]: Without dead ends: 106 [2020-11-22 12:57:18,985 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 [2020-11-22 12:57:18,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-11-22 12:57:18,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-11-22 12:57:18,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-11-22 12:57:18,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 118 transitions. [2020-11-22 12:57:18,998 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 118 transitions. Word has length 10 [2020-11-22 12:57:18,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:18,999 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 118 transitions. [2020-11-22 12:57:18,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:57:19,000 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 118 transitions. [2020-11-22 12:57:19,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 12:57:19,000 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:19,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:19,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:57:19,002 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:19,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:19,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1261200566, now seen corresponding path program 1 times [2020-11-22 12:57:19,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:19,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414853206] [2020-11-22 12:57:19,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:19,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:19,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414853206] [2020-11-22 12:57:19,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:19,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:57:19,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420768569] [2020-11-22 12:57:19,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:57:19,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:19,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:57:19,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:57:19,088 INFO L87 Difference]: Start difference. First operand 106 states and 118 transitions. Second operand 4 states. [2020-11-22 12:57:19,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:19,289 INFO L93 Difference]: Finished difference Result 106 states and 118 transitions. [2020-11-22 12:57:19,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:57:19,291 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-22 12:57:19,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:19,292 INFO L225 Difference]: With dead ends: 106 [2020-11-22 12:57:19,293 INFO L226 Difference]: Without dead ends: 102 [2020-11-22 12:57:19,293 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 [2020-11-22 12:57:19,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-11-22 12:57:19,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-11-22 12:57:19,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-11-22 12:57:19,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2020-11-22 12:57:19,307 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 11 [2020-11-22 12:57:19,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:19,307 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2020-11-22 12:57:19,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:57:19,308 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2020-11-22 12:57:19,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 12:57:19,308 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:19,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:19,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:57:19,309 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:19,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:19,309 INFO L82 PathProgramCache]: Analyzing trace with hash -423610358, now seen corresponding path program 1 times [2020-11-22 12:57:19,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:19,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103892968] [2020-11-22 12:57:19,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:19,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:19,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103892968] [2020-11-22 12:57:19,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:19,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-22 12:57:19,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744268186] [2020-11-22 12:57:19,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:57:19,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:19,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:57:19,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:57:19,386 INFO L87 Difference]: Start difference. First operand 102 states and 114 transitions. Second operand 5 states. [2020-11-22 12:57:19,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:19,706 INFO L93 Difference]: Finished difference Result 120 states and 134 transitions. [2020-11-22 12:57:19,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:57:19,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-22 12:57:19,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:19,709 INFO L225 Difference]: With dead ends: 120 [2020-11-22 12:57:19,709 INFO L226 Difference]: Without dead ends: 118 [2020-11-22 12:57:19,709 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 [2020-11-22 12:57:19,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-11-22 12:57:19,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 100. [2020-11-22 12:57:19,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-11-22 12:57:19,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2020-11-22 12:57:19,718 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 12 [2020-11-22 12:57:19,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:19,718 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2020-11-22 12:57:19,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:57:19,718 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2020-11-22 12:57:19,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 12:57:19,719 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:19,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:19,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:57:19,720 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:19,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:19,720 INFO L82 PathProgramCache]: Analyzing trace with hash -421517046, now seen corresponding path program 1 times [2020-11-22 12:57:19,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:19,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881973014] [2020-11-22 12:57:19,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:19,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881973014] [2020-11-22 12:57:19,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:19,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-22 12:57:19,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293986208] [2020-11-22 12:57:19,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:57:19,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:19,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:57:19,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:57:19,802 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand 5 states. [2020-11-22 12:57:20,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:20,073 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2020-11-22 12:57:20,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:57:20,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-22 12:57:20,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:20,075 INFO L225 Difference]: With dead ends: 100 [2020-11-22 12:57:20,075 INFO L226 Difference]: Without dead ends: 98 [2020-11-22 12:57:20,076 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 [2020-11-22 12:57:20,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-22 12:57:20,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-11-22 12:57:20,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-11-22 12:57:20,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 110 transitions. [2020-11-22 12:57:20,083 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 110 transitions. Word has length 12 [2020-11-22 12:57:20,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:20,083 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 110 transitions. [2020-11-22 12:57:20,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:57:20,084 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 110 transitions. [2020-11-22 12:57:20,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 12:57:20,085 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:20,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:20,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 12:57:20,085 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:20,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:20,086 INFO L82 PathProgramCache]: Analyzing trace with hash -245102512, now seen corresponding path program 1 times [2020-11-22 12:57:20,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:20,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205929093] [2020-11-22 12:57:20,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:20,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:20,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205929093] [2020-11-22 12:57:20,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:20,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-22 12:57:20,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236018727] [2020-11-22 12:57:20,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:57:20,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:20,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:57:20,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:57:20,136 INFO L87 Difference]: Start difference. First operand 98 states and 110 transitions. Second operand 5 states. [2020-11-22 12:57:20,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:20,406 INFO L93 Difference]: Finished difference Result 119 states and 133 transitions. [2020-11-22 12:57:20,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:57:20,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-22 12:57:20,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:20,408 INFO L225 Difference]: With dead ends: 119 [2020-11-22 12:57:20,408 INFO L226 Difference]: Without dead ends: 117 [2020-11-22 12:57:20,408 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 [2020-11-22 12:57:20,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-11-22 12:57:20,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 96. [2020-11-22 12:57:20,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-22 12:57:20,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 108 transitions. [2020-11-22 12:57:20,421 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 108 transitions. Word has length 13 [2020-11-22 12:57:20,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:20,421 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 108 transitions. [2020-11-22 12:57:20,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:57:20,421 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 108 transitions. [2020-11-22 12:57:20,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 12:57:20,422 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:20,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:20,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 12:57:20,422 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:20,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:20,423 INFO L82 PathProgramCache]: Analyzing trace with hash -247013107, now seen corresponding path program 1 times [2020-11-22 12:57:20,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:20,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128102579] [2020-11-22 12:57:20,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:20,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:20,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128102579] [2020-11-22 12:57:20,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:20,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-22 12:57:20,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039852310] [2020-11-22 12:57:20,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:57:20,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:20,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:57:20,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:57:20,590 INFO L87 Difference]: Start difference. First operand 96 states and 108 transitions. Second operand 6 states. [2020-11-22 12:57:20,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:20,815 INFO L93 Difference]: Finished difference Result 129 states and 145 transitions. [2020-11-22 12:57:20,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 12:57:20,815 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-22 12:57:20,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:20,816 INFO L225 Difference]: With dead ends: 129 [2020-11-22 12:57:20,816 INFO L226 Difference]: Without dead ends: 127 [2020-11-22 12:57:20,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:57:20,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-11-22 12:57:20,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 102. [2020-11-22 12:57:20,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-11-22 12:57:20,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 116 transitions. [2020-11-22 12:57:20,824 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 116 transitions. Word has length 13 [2020-11-22 12:57:20,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:20,824 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 116 transitions. [2020-11-22 12:57:20,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:57:20,824 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 116 transitions. [2020-11-22 12:57:20,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 12:57:20,825 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:20,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:20,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 12:57:20,825 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:20,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:20,826 INFO L82 PathProgramCache]: Analyzing trace with hash -182120367, now seen corresponding path program 1 times [2020-11-22 12:57:20,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:20,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713429653] [2020-11-22 12:57:20,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:21,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:21,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713429653] [2020-11-22 12:57:21,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:21,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-22 12:57:21,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617959396] [2020-11-22 12:57:21,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:57:21,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:21,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:57:21,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:57:21,010 INFO L87 Difference]: Start difference. First operand 102 states and 116 transitions. Second operand 6 states. [2020-11-22 12:57:21,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:21,272 INFO L93 Difference]: Finished difference Result 112 states and 126 transitions. [2020-11-22 12:57:21,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:57:21,273 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-22 12:57:21,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:21,273 INFO L225 Difference]: With dead ends: 112 [2020-11-22 12:57:21,274 INFO L226 Difference]: Without dead ends: 108 [2020-11-22 12:57:21,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:57:21,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-11-22 12:57:21,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 103. [2020-11-22 12:57:21,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-11-22 12:57:21,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 117 transitions. [2020-11-22 12:57:21,279 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 117 transitions. Word has length 13 [2020-11-22 12:57:21,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:21,279 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 117 transitions. [2020-11-22 12:57:21,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:57:21,279 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 117 transitions. [2020-11-22 12:57:21,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 12:57:21,280 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:21,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:21,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-22 12:57:21,280 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:21,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:21,281 INFO L82 PathProgramCache]: Analyzing trace with hash 991762866, now seen corresponding path program 1 times [2020-11-22 12:57:21,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:21,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622002035] [2020-11-22 12:57:21,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:21,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:21,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622002035] [2020-11-22 12:57:21,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:21,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-22 12:57:21,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260930850] [2020-11-22 12:57:21,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:57:21,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:21,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:57:21,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:57:21,424 INFO L87 Difference]: Start difference. First operand 103 states and 117 transitions. Second operand 6 states. [2020-11-22 12:57:21,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:21,694 INFO L93 Difference]: Finished difference Result 130 states and 146 transitions. [2020-11-22 12:57:21,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 12:57:21,694 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-22 12:57:21,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:21,695 INFO L225 Difference]: With dead ends: 130 [2020-11-22 12:57:21,695 INFO L226 Difference]: Without dead ends: 128 [2020-11-22 12:57:21,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:57:21,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-11-22 12:57:21,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 106. [2020-11-22 12:57:21,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-11-22 12:57:21,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2020-11-22 12:57:21,700 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 14 [2020-11-22 12:57:21,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:21,700 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2020-11-22 12:57:21,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:57:21,700 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2020-11-22 12:57:21,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-22 12:57:21,701 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:21,701 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:21,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-22 12:57:21,701 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:21,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:21,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1156204912, now seen corresponding path program 1 times [2020-11-22 12:57:21,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:21,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727314206] [2020-11-22 12:57:21,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:21,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:21,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727314206] [2020-11-22 12:57:21,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:21,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:57:21,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689524122] [2020-11-22 12:57:21,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:57:21,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:21,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:57:21,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:57:21,773 INFO L87 Difference]: Start difference. First operand 106 states and 120 transitions. Second operand 4 states. [2020-11-22 12:57:21,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:21,879 INFO L93 Difference]: Finished difference Result 106 states and 120 transitions. [2020-11-22 12:57:21,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:57:21,879 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-22 12:57:21,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:21,880 INFO L225 Difference]: With dead ends: 106 [2020-11-22 12:57:21,880 INFO L226 Difference]: Without dead ends: 104 [2020-11-22 12:57:21,881 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 [2020-11-22 12:57:21,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-11-22 12:57:21,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-11-22 12:57:21,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-11-22 12:57:21,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 118 transitions. [2020-11-22 12:57:21,884 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 118 transitions. Word has length 15 [2020-11-22 12:57:21,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:21,885 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 118 transitions. [2020-11-22 12:57:21,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:57:21,885 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 118 transitions. [2020-11-22 12:57:21,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 12:57:21,886 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:21,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:21,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-22 12:57:21,886 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:21,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:21,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1482607780, now seen corresponding path program 1 times [2020-11-22 12:57:21,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:21,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038002227] [2020-11-22 12:57:21,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:21,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:21,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038002227] [2020-11-22 12:57:21,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:21,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:57:21,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802890526] [2020-11-22 12:57:21,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:57:21,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:21,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:57:21,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:57:21,943 INFO L87 Difference]: Start difference. First operand 104 states and 118 transitions. Second operand 4 states. [2020-11-22 12:57:22,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:22,055 INFO L93 Difference]: Finished difference Result 104 states and 118 transitions. [2020-11-22 12:57:22,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:57:22,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-22 12:57:22,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:22,057 INFO L225 Difference]: With dead ends: 104 [2020-11-22 12:57:22,057 INFO L226 Difference]: Without dead ends: 100 [2020-11-22 12:57:22,058 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 [2020-11-22 12:57:22,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-11-22 12:57:22,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-11-22 12:57:22,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-11-22 12:57:22,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-11-22 12:57:22,061 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 16 [2020-11-22 12:57:22,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:22,062 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-11-22 12:57:22,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:57:22,062 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-11-22 12:57:22,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 12:57:22,063 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:22,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:22,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-22 12:57:22,063 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:22,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:22,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1302675821, now seen corresponding path program 1 times [2020-11-22 12:57:22,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:22,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062280351] [2020-11-22 12:57:22,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:22,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:22,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062280351] [2020-11-22 12:57:22,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:22,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-22 12:57:22,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635961709] [2020-11-22 12:57:22,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:57:22,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:22,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:57:22,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:57:22,132 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 6 states. [2020-11-22 12:57:22,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:22,409 INFO L93 Difference]: Finished difference Result 116 states and 132 transitions. [2020-11-22 12:57:22,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:57:22,409 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-22 12:57:22,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:22,410 INFO L225 Difference]: With dead ends: 116 [2020-11-22 12:57:22,410 INFO L226 Difference]: Without dead ends: 114 [2020-11-22 12:57:22,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-22 12:57:22,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-11-22 12:57:22,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 95. [2020-11-22 12:57:22,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-11-22 12:57:22,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2020-11-22 12:57:22,415 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 17 [2020-11-22 12:57:22,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:22,415 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2020-11-22 12:57:22,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:57:22,415 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2020-11-22 12:57:22,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 12:57:22,416 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:22,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:22,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-22 12:57:22,416 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:22,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:22,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1565723134, now seen corresponding path program 1 times [2020-11-22 12:57:22,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:22,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300324987] [2020-11-22 12:57:22,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:22,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:22,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300324987] [2020-11-22 12:57:22,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:22,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-22 12:57:22,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331453711] [2020-11-22 12:57:22,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:57:22,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:22,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:57:22,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:57:22,488 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand 6 states. [2020-11-22 12:57:22,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:22,756 INFO L93 Difference]: Finished difference Result 108 states and 124 transitions. [2020-11-22 12:57:22,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:57:22,757 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-22 12:57:22,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:22,758 INFO L225 Difference]: With dead ends: 108 [2020-11-22 12:57:22,758 INFO L226 Difference]: Without dead ends: 106 [2020-11-22 12:57:22,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-22 12:57:22,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-11-22 12:57:22,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 90. [2020-11-22 12:57:22,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-11-22 12:57:22,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2020-11-22 12:57:22,761 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 17 [2020-11-22 12:57:22,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:22,761 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2020-11-22 12:57:22,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:57:22,761 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2020-11-22 12:57:22,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 12:57:22,762 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:22,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:22,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-22 12:57:22,762 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:22,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:22,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1500830394, now seen corresponding path program 1 times [2020-11-22 12:57:22,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:22,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551053938] [2020-11-22 12:57:22,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:22,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:22,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551053938] [2020-11-22 12:57:22,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:22,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-22 12:57:22,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213162899] [2020-11-22 12:57:22,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:57:22,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:22,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:57:22,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:57:22,848 INFO L87 Difference]: Start difference. First operand 90 states and 103 transitions. Second operand 6 states. [2020-11-22 12:57:23,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:23,132 INFO L93 Difference]: Finished difference Result 90 states and 103 transitions. [2020-11-22 12:57:23,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:57:23,132 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-22 12:57:23,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:23,132 INFO L225 Difference]: With dead ends: 90 [2020-11-22 12:57:23,133 INFO L226 Difference]: Without dead ends: 53 [2020-11-22 12:57:23,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-22 12:57:23,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-22 12:57:23,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-11-22 12:57:23,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-22 12:57:23,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2020-11-22 12:57:23,135 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 17 [2020-11-22 12:57:23,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:23,135 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2020-11-22 12:57:23,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:57:23,135 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2020-11-22 12:57:23,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-22 12:57:23,139 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:23,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:23,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-22 12:57:23,139 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:23,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:23,140 INFO L82 PathProgramCache]: Analyzing trace with hash -989602732, now seen corresponding path program 1 times [2020-11-22 12:57:23,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:23,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812259482] [2020-11-22 12:57:23,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:23,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:23,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812259482] [2020-11-22 12:57:23,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:23,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-22 12:57:23,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697427601] [2020-11-22 12:57:23,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-22 12:57:23,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:23,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-22 12:57:23,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-11-22 12:57:23,292 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 13 states. [2020-11-22 12:57:23,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:23,503 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2020-11-22 12:57:23,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-22 12:57:23,503 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-11-22 12:57:23,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:23,504 INFO L225 Difference]: With dead ends: 53 [2020-11-22 12:57:23,504 INFO L226 Difference]: Without dead ends: 51 [2020-11-22 12:57:23,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-11-22 12:57:23,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-22 12:57:23,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-22 12:57:23,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-22 12:57:23,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2020-11-22 12:57:23,506 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 43 [2020-11-22 12:57:23,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:23,507 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2020-11-22 12:57:23,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-22 12:57:23,507 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2020-11-22 12:57:23,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-22 12:57:23,507 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:23,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:23,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-22 12:57:23,508 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:23,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:23,508 INFO L82 PathProgramCache]: Analyzing trace with hash -989582872, now seen corresponding path program 1 times [2020-11-22 12:57:23,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:23,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981204454] [2020-11-22 12:57:23,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:23,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:23,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981204454] [2020-11-22 12:57:23,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:23,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-22 12:57:23,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157551420] [2020-11-22 12:57:23,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-22 12:57:23,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:23,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-22 12:57:23,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-11-22 12:57:23,694 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 13 states. [2020-11-22 12:57:23,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:23,869 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2020-11-22 12:57:23,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-22 12:57:23,870 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-11-22 12:57:23,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:23,870 INFO L225 Difference]: With dead ends: 58 [2020-11-22 12:57:23,870 INFO L226 Difference]: Without dead ends: 56 [2020-11-22 12:57:23,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-11-22 12:57:23,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-22 12:57:23,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2020-11-22 12:57:23,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-22 12:57:23,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2020-11-22 12:57:23,873 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 43 [2020-11-22 12:57:23,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:23,873 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2020-11-22 12:57:23,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-22 12:57:23,873 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2020-11-22 12:57:23,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-22 12:57:23,873 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:23,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:23,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-22 12:57:23,874 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:23,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:23,874 INFO L82 PathProgramCache]: Analyzing trace with hash -612907167, now seen corresponding path program 1 times [2020-11-22 12:57:23,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:23,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167794723] [2020-11-22 12:57:23,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:24,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:24,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167794723] [2020-11-22 12:57:24,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:24,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-22 12:57:24,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743830481] [2020-11-22 12:57:24,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-22 12:57:24,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:24,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-22 12:57:24,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:57:24,033 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 7 states. [2020-11-22 12:57:24,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:24,148 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-11-22 12:57:24,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:57:24,148 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-11-22 12:57:24,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:24,148 INFO L225 Difference]: With dead ends: 49 [2020-11-22 12:57:24,148 INFO L226 Difference]: Without dead ends: 45 [2020-11-22 12:57:24,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-22 12:57:24,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-22 12:57:24,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-11-22 12:57:24,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-22 12:57:24,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2020-11-22 12:57:24,150 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 44 [2020-11-22 12:57:24,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:24,150 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2020-11-22 12:57:24,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-22 12:57:24,150 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2020-11-22 12:57:24,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-22 12:57:24,151 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:24,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:24,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-22 12:57:24,151 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:24,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:24,151 INFO L82 PathProgramCache]: Analyzing trace with hash -612291487, now seen corresponding path program 1 times [2020-11-22 12:57:24,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:24,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900070834] [2020-11-22 12:57:24,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:24,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:24,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900070834] [2020-11-22 12:57:24,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:24,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-22 12:57:24,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869553169] [2020-11-22 12:57:24,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-22 12:57:24,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:24,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-22 12:57:24,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:57:24,266 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 7 states. [2020-11-22 12:57:24,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:24,396 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-11-22 12:57:24,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:57:24,397 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-11-22 12:57:24,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:24,397 INFO L225 Difference]: With dead ends: 49 [2020-11-22 12:57:24,397 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:57:24,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-22 12:57:24,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:57:24,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:57:24,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:57:24,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:57:24,398 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2020-11-22 12:57:24,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:24,398 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:57:24,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-22 12:57:24,398 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:57:24,399 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:57:24,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-22 12:57:24,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:57:24,605 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,605 INFO L274 CegarLoopResult]: For program point L597(lines 597 969) no Hoare annotation was computed. [2020-11-22 12:57:24,605 INFO L274 CegarLoopResult]: For program point L366(lines 366 991) no Hoare annotation was computed. [2020-11-22 12:57:24,605 INFO L274 CegarLoopResult]: For program point L267(lines 267 275) no Hoare annotation was computed. [2020-11-22 12:57:24,605 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,605 INFO L274 CegarLoopResult]: For program point L400(lines 400 424) no Hoare annotation was computed. [2020-11-22 12:57:24,606 INFO L274 CegarLoopResult]: For program point L136(lines 136 242) no Hoare annotation was computed. [2020-11-22 12:57:24,606 INFO L274 CegarLoopResult]: For program point L103(lines 103 125) no Hoare annotation was computed. [2020-11-22 12:57:24,606 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,606 INFO L274 CegarLoopResult]: For program point L4-2(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,606 INFO L274 CegarLoopResult]: For program point L929(lines 929 941) no Hoare annotation was computed. [2020-11-22 12:57:24,606 INFO L274 CegarLoopResult]: For program point L4-4(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,606 INFO L274 CegarLoopResult]: For program point L4-6(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,606 INFO L274 CegarLoopResult]: For program point L4-8(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,606 INFO L274 CegarLoopResult]: For program point L4-10(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,606 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,606 INFO L274 CegarLoopResult]: For program point L665(lines 665 963) no Hoare annotation was computed. [2020-11-22 12:57:24,606 INFO L274 CegarLoopResult]: For program point L4-12(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,606 INFO L274 CegarLoopResult]: For program point L4-14(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,606 INFO L274 CegarLoopResult]: For program point L4-16(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,607 INFO L274 CegarLoopResult]: For program point L4-18(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,607 INFO L274 CegarLoopResult]: For program point L434(lines 434 985) no Hoare annotation was computed. [2020-11-22 12:57:24,607 INFO L274 CegarLoopResult]: For program point L4-20(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,607 INFO L274 CegarLoopResult]: For program point L4-22(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,607 INFO L274 CegarLoopResult]: For program point L4-24(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,607 INFO L274 CegarLoopResult]: For program point L4-26(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,607 INFO L274 CegarLoopResult]: For program point L4-28(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,607 INFO L274 CegarLoopResult]: For program point L4-30(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,607 INFO L274 CegarLoopResult]: For program point L468(lines 468 492) no Hoare annotation was computed. [2020-11-22 12:57:24,607 INFO L274 CegarLoopResult]: For program point L171(lines 171 193) no Hoare annotation was computed. [2020-11-22 12:57:24,607 INFO L274 CegarLoopResult]: For program point L72(lines 72 288) no Hoare annotation was computed. [2020-11-22 12:57:24,607 INFO L274 CegarLoopResult]: For program point L733(lines 733 957) no Hoare annotation was computed. [2020-11-22 12:57:24,607 INFO L274 CegarLoopResult]: For program point L502(lines 502 979) no Hoare annotation was computed. [2020-11-22 12:57:24,607 INFO L274 CegarLoopResult]: For program point L205(lines 205 231) no Hoare annotation was computed. [2020-11-22 12:57:24,608 INFO L277 CegarLoopResult]: At program point L932(lines 17 1006) the Hoare annotation is: true [2020-11-22 12:57:24,608 INFO L274 CegarLoopResult]: For program point L866(lines 866 946) no Hoare annotation was computed. [2020-11-22 12:57:24,608 INFO L274 CegarLoopResult]: For program point L536(lines 536 560) no Hoare annotation was computed. [2020-11-22 12:57:24,608 INFO L274 CegarLoopResult]: For program point L801(lines 801 951) no Hoare annotation was computed. [2020-11-22 12:57:24,608 INFO L274 CegarLoopResult]: For program point L570(lines 570 973) no Hoare annotation was computed. [2020-11-22 12:57:24,608 INFO L270 CegarLoopResult]: At program point L868(lines 26 1000) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~main__t~0) (<= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0)) [2020-11-22 12:57:24,608 INFO L274 CegarLoopResult]: For program point L604(lines 604 628) no Hoare annotation was computed. [2020-11-22 12:57:24,608 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,608 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,608 INFO L274 CegarLoopResult]: For program point L638(lines 638 967) no Hoare annotation was computed. [2020-11-22 12:57:24,608 INFO L274 CegarLoopResult]: For program point L143(lines 143 236) no Hoare annotation was computed. [2020-11-22 12:57:24,608 INFO L274 CegarLoopResult]: For program point L672(lines 672 696) no Hoare annotation was computed. [2020-11-22 12:57:24,608 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,609 INFO L274 CegarLoopResult]: For program point L309(lines 309 995) no Hoare annotation was computed. [2020-11-22 12:57:24,609 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,609 INFO L270 CegarLoopResult]: At program point L904(lines 65 999) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~main__t~0) (<= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0)) [2020-11-22 12:57:24,609 INFO L274 CegarLoopResult]: For program point L706(lines 706 961) no Hoare annotation was computed. [2020-11-22 12:57:24,609 INFO L274 CegarLoopResult]: For program point L343(lines 343 354) no Hoare annotation was computed. [2020-11-22 12:57:24,609 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,609 INFO L274 CegarLoopResult]: For program point L46(lines 46 56) no Hoare annotation was computed. [2020-11-22 12:57:24,609 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,609 INFO L277 CegarLoopResult]: At program point L1004(lines 22 1005) the Hoare annotation is: true [2020-11-22 12:57:24,609 INFO L274 CegarLoopResult]: For program point L740(lines 740 764) no Hoare annotation was computed. [2020-11-22 12:57:24,609 INFO L274 CegarLoopResult]: For program point L377(lines 377 989) no Hoare annotation was computed. [2020-11-22 12:57:24,609 INFO L274 CegarLoopResult]: For program point L774(lines 774 955) no Hoare annotation was computed. [2020-11-22 12:57:24,609 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,610 INFO L274 CegarLoopResult]: For program point L411(lines 411 422) no Hoare annotation was computed. [2020-11-22 12:57:24,610 INFO L270 CegarLoopResult]: At program point L940(lines 858 947) the Hoare annotation is: (and (<= 9 ULTIMATE.start_main_~main__t~0) (<= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0)) [2020-11-22 12:57:24,610 INFO L274 CegarLoopResult]: For program point L874(lines 874 945) no Hoare annotation was computed. [2020-11-22 12:57:24,610 INFO L274 CegarLoopResult]: For program point L808(lines 808 832) no Hoare annotation was computed. [2020-11-22 12:57:24,610 INFO L274 CegarLoopResult]: For program point L445(lines 445 983) no Hoare annotation was computed. [2020-11-22 12:57:24,610 INFO L274 CegarLoopResult]: For program point L115(lines 115 123) no Hoare annotation was computed. [2020-11-22 12:57:24,610 INFO L274 CegarLoopResult]: For program point L842(lines 842 949) no Hoare annotation was computed. [2020-11-22 12:57:24,610 INFO L274 CegarLoopResult]: For program point L479(lines 479 490) no Hoare annotation was computed. [2020-11-22 12:57:24,610 INFO L274 CegarLoopResult]: For program point L248(lines 248 283) no Hoare annotation was computed. [2020-11-22 12:57:24,610 INFO L274 CegarLoopResult]: For program point L83(lines 83 286) no Hoare annotation was computed. [2020-11-22 12:57:24,610 INFO L274 CegarLoopResult]: For program point L513(lines 513 977) no Hoare annotation was computed. [2020-11-22 12:57:24,610 INFO L270 CegarLoopResult]: At program point L282(lines 132 284) the Hoare annotation is: (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (<= 1 ULTIMATE.start_main_~main__t~0)) [2020-11-22 12:57:24,610 INFO L274 CegarLoopResult]: For program point L183(lines 183 191) no Hoare annotation was computed. [2020-11-22 12:57:24,610 INFO L274 CegarLoopResult]: For program point L547(lines 547 558) no Hoare annotation was computed. [2020-11-22 12:57:24,611 INFO L274 CegarLoopResult]: For program point L217(lines 217 229) no Hoare annotation was computed. [2020-11-22 12:57:24,611 INFO L274 CegarLoopResult]: For program point L581(lines 581 971) no Hoare annotation was computed. [2020-11-22 12:57:24,611 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:57:24,611 INFO L274 CegarLoopResult]: For program point L317(lines 317 994) no Hoare annotation was computed. [2020-11-22 12:57:24,611 INFO L274 CegarLoopResult]: For program point L615(lines 615 626) no Hoare annotation was computed. [2020-11-22 12:57:24,611 INFO L274 CegarLoopResult]: For program point L649(lines 649 965) no Hoare annotation was computed. [2020-11-22 12:57:24,611 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,611 INFO L274 CegarLoopResult]: For program point L385(lines 385 988) no Hoare annotation was computed. [2020-11-22 12:57:24,611 INFO L274 CegarLoopResult]: For program point L22(lines 22 1005) no Hoare annotation was computed. [2020-11-22 12:57:24,611 INFO L274 CegarLoopResult]: For program point L881(lines 881 907) no Hoare annotation was computed. [2020-11-22 12:57:24,611 INFO L274 CegarLoopResult]: For program point L683(lines 683 694) no Hoare annotation was computed. [2020-11-22 12:57:24,611 INFO L274 CegarLoopResult]: For program point L155(lines 155 234) no Hoare annotation was computed. [2020-11-22 12:57:24,611 INFO L274 CegarLoopResult]: For program point L717(lines 717 959) no Hoare annotation was computed. [2020-11-22 12:57:24,611 INFO L274 CegarLoopResult]: For program point L453(lines 453 982) no Hoare annotation was computed. [2020-11-22 12:57:24,611 INFO L274 CegarLoopResult]: For program point L255(lines 255 277) no Hoare annotation was computed. [2020-11-22 12:57:24,612 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,612 INFO L274 CegarLoopResult]: For program point L751(lines 751 762) no Hoare annotation was computed. [2020-11-22 12:57:24,612 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:57:24,612 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,612 INFO L274 CegarLoopResult]: For program point L917(lines 917 943) no Hoare annotation was computed. [2020-11-22 12:57:24,612 INFO L274 CegarLoopResult]: For program point L785(lines 785 953) no Hoare annotation was computed. [2020-11-22 12:57:24,612 INFO L274 CegarLoopResult]: For program point L521(lines 521 976) no Hoare annotation was computed. [2020-11-22 12:57:24,612 INFO L274 CegarLoopResult]: For program point L26(lines 26 1000) no Hoare annotation was computed. [2020-11-22 12:57:24,612 INFO L274 CegarLoopResult]: For program point L819(lines 819 830) no Hoare annotation was computed. [2020-11-22 12:57:24,612 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,612 INFO L274 CegarLoopResult]: For program point L853(lines 853 947) no Hoare annotation was computed. [2020-11-22 12:57:24,612 INFO L274 CegarLoopResult]: For program point L589(lines 589 970) no Hoare annotation was computed. [2020-11-22 12:57:24,612 INFO L274 CegarLoopResult]: For program point L325(lines 325 993) no Hoare annotation was computed. [2020-11-22 12:57:24,612 INFO L274 CegarLoopResult]: For program point L657(lines 657 964) no Hoare annotation was computed. [2020-11-22 12:57:24,612 INFO L274 CegarLoopResult]: For program point L393(lines 393 987) no Hoare annotation was computed. [2020-11-22 12:57:24,617 INFO L274 CegarLoopResult]: For program point L96(lines 96 285) no Hoare annotation was computed. [2020-11-22 12:57:24,617 INFO L274 CegarLoopResult]: For program point L725(lines 725 958) no Hoare annotation was computed. [2020-11-22 12:57:24,617 INFO L274 CegarLoopResult]: For program point L461(lines 461 981) no Hoare annotation was computed. [2020-11-22 12:57:24,617 INFO L274 CegarLoopResult]: For program point L164(lines 164 233) no Hoare annotation was computed. [2020-11-22 12:57:24,618 INFO L274 CegarLoopResult]: For program point L65(lines 65 999) no Hoare annotation was computed. [2020-11-22 12:57:24,618 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,618 INFO L274 CegarLoopResult]: For program point L132(lines 132 284) no Hoare annotation was computed. [2020-11-22 12:57:24,618 INFO L274 CegarLoopResult]: For program point L793(lines 793 952) no Hoare annotation was computed. [2020-11-22 12:57:24,618 INFO L274 CegarLoopResult]: For program point L529(lines 529 975) no Hoare annotation was computed. [2020-11-22 12:57:24,618 INFO L274 CegarLoopResult]: For program point L298(lines 298 997) no Hoare annotation was computed. [2020-11-22 12:57:24,618 INFO L274 CegarLoopResult]: For program point L34(lines 34 58) no Hoare annotation was computed. [2020-11-22 12:57:24,618 INFO L274 CegarLoopResult]: For program point L893(lines 893 905) no Hoare annotation was computed. [2020-11-22 12:57:24,619 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:57:24,619 INFO L274 CegarLoopResult]: For program point L332(lines 332 356) no Hoare annotation was computed. [2020-11-22 12:57:24,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:57:24 BoogieIcfgContainer [2020-11-22 12:57:24,638 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:57:24,638 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:57:24,639 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:57:24,639 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:57:24,639 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:17" (3/4) ... [2020-11-22 12:57:24,642 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:57:24,665 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-22 12:57:24,666 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-22 12:57:24,668 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:57:24,669 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:57:24,811 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_36925a87-4d57-4f81-9a95-24489d0c6d94/bin/utaipan/witness.graphml [2020-11-22 12:57:24,811 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:57:24,813 INFO L168 Benchmark]: Toolchain (without parser) took 9148.98 ms. Allocated memory was 125.8 MB in the beginning and 182.5 MB in the end (delta: 56.6 MB). Free memory was 96.2 MB in the beginning and 134.4 MB in the end (delta: -38.2 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:24,814 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 92.3 MB. Free memory is still 53.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:24,815 INFO L168 Benchmark]: CACSL2BoogieTranslator took 585.25 ms. Allocated memory is still 125.8 MB. Free memory was 96.2 MB in the beginning and 97.1 MB in the end (delta: -883.8 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:24,815 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.37 ms. Allocated memory is still 125.8 MB. Free memory was 97.1 MB in the beginning and 94.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:24,815 INFO L168 Benchmark]: Boogie Preprocessor took 63.62 ms. Allocated memory is still 125.8 MB. Free memory was 94.1 MB in the beginning and 92.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:24,816 INFO L168 Benchmark]: RCFGBuilder took 1082.85 ms. Allocated memory is still 125.8 MB. Free memory was 91.8 MB in the beginning and 73.6 MB in the end (delta: 18.2 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:24,816 INFO L168 Benchmark]: TraceAbstraction took 7139.25 ms. Allocated memory was 125.8 MB in the beginning and 182.5 MB in the end (delta: 56.6 MB). Free memory was 73.6 MB in the beginning and 147.0 MB in the end (delta: -73.4 MB). Peak memory consumption was 81.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:24,816 INFO L168 Benchmark]: Witness Printer took 173.04 ms. Allocated memory is still 182.5 MB. Free memory was 147.0 MB in the beginning and 134.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:24,818 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 92.3 MB. Free memory is still 53.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 585.25 ms. Allocated memory is still 125.8 MB. Free memory was 96.2 MB in the beginning and 97.1 MB in the end (delta: -883.8 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 96.37 ms. Allocated memory is still 125.8 MB. Free memory was 97.1 MB in the beginning and 94.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.62 ms. Allocated memory is still 125.8 MB. Free memory was 94.1 MB in the beginning and 92.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1082.85 ms. Allocated memory is still 125.8 MB. Free memory was 91.8 MB in the beginning and 73.6 MB in the end (delta: 18.2 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7139.25 ms. Allocated memory was 125.8 MB in the beginning and 182.5 MB in the end (delta: 56.6 MB). Free memory was 73.6 MB in the beginning and 147.0 MB in the end (delta: -73.4 MB). Peak memory consumption was 81.7 MB. Max. memory is 16.1 GB. * Witness Printer took 173.04 ms. Allocated memory is still 182.5 MB. Free memory was 147.0 MB in the beginning and 134.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 0 <= main__t && main__t <= main__tagbuf_len - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 132]: Loop Invariant Derived loop invariant: main__t < main__tagbuf_len && 1 <= main__t - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: 1 <= main__t && main__t <= main__tagbuf_len - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 858]: Loop Invariant Derived loop invariant: 9 <= main__t && main__t <= main__tagbuf_len - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 118 locations, 16 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.8s, OverallIterations: 19, TraceHistogramMax: 1, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1016 SDtfs, 1875 SDslu, 1359 SDs, 0 SdLazy, 3476 SolverSat, 402 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 174 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 19 MinimizatonAttempts, 133 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 14 NumberOfFragments, 30 HoareAnnotationTreeSize, 6 FomulaSimplifications, 4287 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 257 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 367 NumberOfCodeBlocks, 367 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 348 ConstructedInterpolants, 0 QuantifiedInterpolants, 28920 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...