./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_14.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_bddd16c5-6010-4f6c-a013-520c2519d303/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bddd16c5-6010-4f6c-a013-520c2519d303/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bddd16c5-6010-4f6c-a013-520c2519d303/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bddd16c5-6010-4f6c-a013-520c2519d303/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_14.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bddd16c5-6010-4f6c-a013-520c2519d303/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bddd16c5-6010-4f6c-a013-520c2519d303/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 9f75fa2e9def7f0d516fdc877ae1f37f4d5f7bd5 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 04:33:42,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 04:33:42,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 04:33:42,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 04:33:42,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 04:33:42,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 04:33:42,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 04:33:42,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 04:33:42,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 04:33:42,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 04:33:42,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 04:33:42,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 04:33:42,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 04:33:42,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 04:33:42,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 04:33:42,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 04:33:42,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 04:33:42,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 04:33:42,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 04:33:42,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 04:33:42,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 04:33:42,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 04:33:42,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 04:33:42,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 04:33:42,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 04:33:42,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 04:33:42,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 04:33:42,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 04:33:42,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 04:33:42,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 04:33:42,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 04:33:42,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 04:33:42,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 04:33:42,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 04:33:42,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 04:33:42,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 04:33:42,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 04:33:42,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 04:33:42,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 04:33:42,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 04:33:42,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 04:33:42,628 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bddd16c5-6010-4f6c-a013-520c2519d303/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 04:33:42,645 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 04:33:42,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 04:33:42,645 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 04:33:42,646 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 04:33:42,646 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 04:33:42,646 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 04:33:42,646 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 04:33:42,646 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 04:33:42,646 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 04:33:42,646 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 04:33:42,646 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 04:33:42,647 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 04:33:42,647 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 04:33:42,647 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 04:33:42,647 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 04:33:42,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 04:33:42,648 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 04:33:42,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 04:33:42,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 04:33:42,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 04:33:42,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 04:33:42,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 04:33:42,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 04:33:42,648 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 04:33:42,648 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 04:33:42,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 04:33:42,649 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 04:33:42,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 04:33:42,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 04:33:42,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 04:33:42,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 04:33:42,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 04:33:42,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 04:33:42,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 04:33:42,650 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 04:33:42,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 04:33:42,650 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 04:33:42,650 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 04:33:42,650 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 04:33:42,650 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_bddd16c5-6010-4f6c-a013-520c2519d303/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bddd16c5-6010-4f6c-a013-520c2519d303/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f75fa2e9def7f0d516fdc877ae1f37f4d5f7bd5 [2020-12-09 04:33:42,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 04:33:42,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 04:33:42,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 04:33:42,852 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 04:33:42,853 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 04:33:42,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bddd16c5-6010-4f6c-a013-520c2519d303/bin/utaipan/../../sv-benchmarks/c/openssl-simplified/s3_srvr_14.cil.c [2020-12-09 04:33:42,892 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bddd16c5-6010-4f6c-a013-520c2519d303/bin/utaipan/data/c2dba3f53/af54786859634018ba795f9456ec8db6/FLAG6782e079f [2020-12-09 04:33:43,275 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 04:33:43,276 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bddd16c5-6010-4f6c-a013-520c2519d303/sv-benchmarks/c/openssl-simplified/s3_srvr_14.cil.c [2020-12-09 04:33:43,285 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bddd16c5-6010-4f6c-a013-520c2519d303/bin/utaipan/data/c2dba3f53/af54786859634018ba795f9456ec8db6/FLAG6782e079f [2020-12-09 04:33:43,296 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bddd16c5-6010-4f6c-a013-520c2519d303/bin/utaipan/data/c2dba3f53/af54786859634018ba795f9456ec8db6 [2020-12-09 04:33:43,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 04:33:43,299 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 04:33:43,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 04:33:43,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 04:33:43,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 04:33:43,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:33:43" (1/1) ... [2020-12-09 04:33:43,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46a81eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:33:43, skipping insertion in model container [2020-12-09 04:33:43,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:33:43" (1/1) ... [2020-12-09 04:33:43,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 04:33:43,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 04:33:43,480 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_bddd16c5-6010-4f6c-a013-520c2519d303/sv-benchmarks/c/openssl-simplified/s3_srvr_14.cil.c[44685,44698] [2020-12-09 04:33:43,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 04:33:43,492 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 04:33:43,532 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_bddd16c5-6010-4f6c-a013-520c2519d303/sv-benchmarks/c/openssl-simplified/s3_srvr_14.cil.c[44685,44698] [2020-12-09 04:33:43,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 04:33:43,545 INFO L208 MainTranslator]: Completed translation [2020-12-09 04:33:43,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:33:43 WrapperNode [2020-12-09 04:33:43,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 04:33:43,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 04:33:43,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 04:33:43,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 04:33:43,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:33:43" (1/1) ... [2020-12-09 04:33:43,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:33:43" (1/1) ... [2020-12-09 04:33:43,596 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 04:33:43,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 04:33:43,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 04:33:43,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 04:33:43,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:33:43" (1/1) ... [2020-12-09 04:33:43,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:33:43" (1/1) ... [2020-12-09 04:33:43,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:33:43" (1/1) ... [2020-12-09 04:33:43,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:33:43" (1/1) ... [2020-12-09 04:33:43,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:33:43" (1/1) ... [2020-12-09 04:33:43,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:33:43" (1/1) ... [2020-12-09 04:33:43,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:33:43" (1/1) ... [2020-12-09 04:33:43,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 04:33:43,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 04:33:43,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 04:33:43,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 04:33:43,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:33:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bddd16c5-6010-4f6c-a013-520c2519d303/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 [2020-12-09 04:33:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 04:33:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 04:33:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 04:33:43,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 04:33:43,822 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 04:33:44,213 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-12-09 04:33:44,213 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-12-09 04:33:44,448 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 04:33:44,448 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 04:33:44,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:33:44 BoogieIcfgContainer [2020-12-09 04:33:44,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 04:33:44,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 04:33:44,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 04:33:44,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 04:33:44,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:33:43" (1/3) ... [2020-12-09 04:33:44,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3644e6c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:33:44, skipping insertion in model container [2020-12-09 04:33:44,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:33:43" (2/3) ... [2020-12-09 04:33:44,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3644e6c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:33:44, skipping insertion in model container [2020-12-09 04:33:44,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:33:44" (3/3) ... [2020-12-09 04:33:44,458 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_14.cil.c [2020-12-09 04:33:44,469 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 04:33:44,472 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 04:33:44,479 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 04:33:44,497 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 04:33:44,497 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 04:33:44,497 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 04:33:44,497 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 04:33:44,497 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 04:33:44,497 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 04:33:44,497 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 04:33:44,497 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 04:33:44,509 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states. [2020-12-09 04:33:44,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 04:33:44,513 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:33:44,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:33:44,513 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:33:44,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:33:44,517 INFO L82 PathProgramCache]: Analyzing trace with hash 670695162, now seen corresponding path program 1 times [2020-12-09 04:33:44,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:33:44,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126966652] [2020-12-09 04:33:44,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:33:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:33:44,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:33:44,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126966652] [2020-12-09 04:33:44,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:33:44,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:33:44,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047828795] [2020-12-09 04:33:44,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:33:44,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:33:44,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:33:44,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:44,670 INFO L87 Difference]: Start difference. First operand 112 states. Second operand 3 states. [2020-12-09 04:33:44,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:33:44,785 INFO L93 Difference]: Finished difference Result 246 states and 428 transitions. [2020-12-09 04:33:44,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:33:44,787 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-12-09 04:33:44,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:33:44,797 INFO L225 Difference]: With dead ends: 246 [2020-12-09 04:33:44,798 INFO L226 Difference]: Without dead ends: 130 [2020-12-09 04:33:44,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:44,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-12-09 04:33:44,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2020-12-09 04:33:44,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-12-09 04:33:44,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 194 transitions. [2020-12-09 04:33:44,844 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 194 transitions. Word has length 16 [2020-12-09 04:33:44,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:33:44,845 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 194 transitions. [2020-12-09 04:33:44,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:33:44,845 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 194 transitions. [2020-12-09 04:33:44,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 04:33:44,846 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:33:44,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:33:44,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 04:33:44,846 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:33:44,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:33:44,847 INFO L82 PathProgramCache]: Analyzing trace with hash 506200419, now seen corresponding path program 1 times [2020-12-09 04:33:44,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:33:44,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688374292] [2020-12-09 04:33:44,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:33:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:33:44,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:33:44,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688374292] [2020-12-09 04:33:44,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:33:44,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:33:44,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284893819] [2020-12-09 04:33:44,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:33:44,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:33:44,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:33:44,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:44,901 INFO L87 Difference]: Start difference. First operand 128 states and 194 transitions. Second operand 3 states. [2020-12-09 04:33:45,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:33:45,010 INFO L93 Difference]: Finished difference Result 265 states and 398 transitions. [2020-12-09 04:33:45,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:33:45,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-09 04:33:45,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:33:45,012 INFO L225 Difference]: With dead ends: 265 [2020-12-09 04:33:45,012 INFO L226 Difference]: Without dead ends: 139 [2020-12-09 04:33:45,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:45,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-12-09 04:33:45,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 129. [2020-12-09 04:33:45,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-12-09 04:33:45,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 195 transitions. [2020-12-09 04:33:45,022 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 195 transitions. Word has length 18 [2020-12-09 04:33:45,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:33:45,022 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 195 transitions. [2020-12-09 04:33:45,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:33:45,022 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 195 transitions. [2020-12-09 04:33:45,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 04:33:45,023 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:33:45,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:33:45,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 04:33:45,023 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:33:45,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:33:45,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1996808921, now seen corresponding path program 1 times [2020-12-09 04:33:45,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:33:45,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514417112] [2020-12-09 04:33:45,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:33:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:33:45,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:33:45,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514417112] [2020-12-09 04:33:45,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:33:45,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:33:45,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163264181] [2020-12-09 04:33:45,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:33:45,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:33:45,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:33:45,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:45,061 INFO L87 Difference]: Start difference. First operand 129 states and 195 transitions. Second operand 3 states. [2020-12-09 04:33:45,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:33:45,156 INFO L93 Difference]: Finished difference Result 277 states and 419 transitions. [2020-12-09 04:33:45,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:33:45,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-09 04:33:45,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:33:45,158 INFO L225 Difference]: With dead ends: 277 [2020-12-09 04:33:45,158 INFO L226 Difference]: Without dead ends: 150 [2020-12-09 04:33:45,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:45,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-12-09 04:33:45,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 146. [2020-12-09 04:33:45,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-12-09 04:33:45,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 222 transitions. [2020-12-09 04:33:45,171 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 222 transitions. Word has length 18 [2020-12-09 04:33:45,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:33:45,171 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 222 transitions. [2020-12-09 04:33:45,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:33:45,171 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 222 transitions. [2020-12-09 04:33:45,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 04:33:45,172 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:33:45,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:33:45,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 04:33:45,173 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:33:45,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:33:45,173 INFO L82 PathProgramCache]: Analyzing trace with hash 26431250, now seen corresponding path program 1 times [2020-12-09 04:33:45,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:33:45,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851977089] [2020-12-09 04:33:45,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:33:45,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:33:45,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:33:45,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851977089] [2020-12-09 04:33:45,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:33:45,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:33:45,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888593632] [2020-12-09 04:33:45,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:33:45,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:33:45,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:33:45,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:45,203 INFO L87 Difference]: Start difference. First operand 146 states and 222 transitions. Second operand 3 states. [2020-12-09 04:33:45,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:33:45,287 INFO L93 Difference]: Finished difference Result 298 states and 455 transitions. [2020-12-09 04:33:45,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:33:45,288 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-09 04:33:45,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:33:45,289 INFO L225 Difference]: With dead ends: 298 [2020-12-09 04:33:45,289 INFO L226 Difference]: Without dead ends: 154 [2020-12-09 04:33:45,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:45,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-12-09 04:33:45,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2020-12-09 04:33:45,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-12-09 04:33:45,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 233 transitions. [2020-12-09 04:33:45,300 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 233 transitions. Word has length 18 [2020-12-09 04:33:45,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:33:45,301 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 233 transitions. [2020-12-09 04:33:45,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:33:45,301 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 233 transitions. [2020-12-09 04:33:45,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 04:33:45,302 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:33:45,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:33:45,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 04:33:45,302 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:33:45,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:33:45,303 INFO L82 PathProgramCache]: Analyzing trace with hash -698677050, now seen corresponding path program 1 times [2020-12-09 04:33:45,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:33:45,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652855785] [2020-12-09 04:33:45,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:33:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:33:45,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:33:45,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652855785] [2020-12-09 04:33:45,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:33:45,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:33:45,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848620985] [2020-12-09 04:33:45,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:33:45,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:33:45,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:33:45,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:45,337 INFO L87 Difference]: Start difference. First operand 152 states and 233 transitions. Second operand 3 states. [2020-12-09 04:33:45,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:33:45,416 INFO L93 Difference]: Finished difference Result 312 states and 474 transitions. [2020-12-09 04:33:45,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:33:45,416 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-09 04:33:45,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:33:45,417 INFO L225 Difference]: With dead ends: 312 [2020-12-09 04:33:45,417 INFO L226 Difference]: Without dead ends: 162 [2020-12-09 04:33:45,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:45,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-09 04:33:45,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 152. [2020-12-09 04:33:45,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-12-09 04:33:45,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 231 transitions. [2020-12-09 04:33:45,425 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 231 transitions. Word has length 19 [2020-12-09 04:33:45,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:33:45,425 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 231 transitions. [2020-12-09 04:33:45,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:33:45,425 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 231 transitions. [2020-12-09 04:33:45,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 04:33:45,426 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:33:45,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:33:45,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 04:33:45,426 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:33:45,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:33:45,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1407059716, now seen corresponding path program 1 times [2020-12-09 04:33:45,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:33:45,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132319254] [2020-12-09 04:33:45,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:33:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:33:45,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:33:45,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132319254] [2020-12-09 04:33:45,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:33:45,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:33:45,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125463311] [2020-12-09 04:33:45,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:33:45,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:33:45,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:33:45,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:45,449 INFO L87 Difference]: Start difference. First operand 152 states and 231 transitions. Second operand 3 states. [2020-12-09 04:33:45,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:33:45,526 INFO L93 Difference]: Finished difference Result 306 states and 463 transitions. [2020-12-09 04:33:45,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:33:45,526 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-09 04:33:45,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:33:45,527 INFO L225 Difference]: With dead ends: 306 [2020-12-09 04:33:45,527 INFO L226 Difference]: Without dead ends: 156 [2020-12-09 04:33:45,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:45,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-12-09 04:33:45,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 152. [2020-12-09 04:33:45,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-12-09 04:33:45,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 230 transitions. [2020-12-09 04:33:45,533 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 230 transitions. Word has length 19 [2020-12-09 04:33:45,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:33:45,533 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 230 transitions. [2020-12-09 04:33:45,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:33:45,534 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 230 transitions. [2020-12-09 04:33:45,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-09 04:33:45,534 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:33:45,534 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] [2020-12-09 04:33:45,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 04:33:45,534 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:33:45,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:33:45,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1922966050, now seen corresponding path program 1 times [2020-12-09 04:33:45,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:33:45,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745145919] [2020-12-09 04:33:45,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:33:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:33:45,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:33:45,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745145919] [2020-12-09 04:33:45,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:33:45,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:33:45,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062413654] [2020-12-09 04:33:45,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:33:45,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:33:45,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:33:45,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:45,556 INFO L87 Difference]: Start difference. First operand 152 states and 230 transitions. Second operand 3 states. [2020-12-09 04:33:45,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:33:45,631 INFO L93 Difference]: Finished difference Result 312 states and 468 transitions. [2020-12-09 04:33:45,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:33:45,631 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-09 04:33:45,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:33:45,632 INFO L225 Difference]: With dead ends: 312 [2020-12-09 04:33:45,632 INFO L226 Difference]: Without dead ends: 162 [2020-12-09 04:33:45,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:45,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-09 04:33:45,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 152. [2020-12-09 04:33:45,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-12-09 04:33:45,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 228 transitions. [2020-12-09 04:33:45,640 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 228 transitions. Word has length 20 [2020-12-09 04:33:45,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:33:45,640 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 228 transitions. [2020-12-09 04:33:45,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:33:45,640 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 228 transitions. [2020-12-09 04:33:45,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 04:33:45,641 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:33:45,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:33:45,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 04:33:45,641 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:33:45,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:33:45,642 INFO L82 PathProgramCache]: Analyzing trace with hash 545954785, now seen corresponding path program 1 times [2020-12-09 04:33:45,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:33:45,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146042193] [2020-12-09 04:33:45,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:33:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:33:45,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:33:45,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146042193] [2020-12-09 04:33:45,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:33:45,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:33:45,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320249732] [2020-12-09 04:33:45,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:33:45,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:33:45,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:33:45,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:45,668 INFO L87 Difference]: Start difference. First operand 152 states and 228 transitions. Second operand 3 states. [2020-12-09 04:33:45,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:33:45,754 INFO L93 Difference]: Finished difference Result 312 states and 464 transitions. [2020-12-09 04:33:45,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:33:45,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-09 04:33:45,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:33:45,755 INFO L225 Difference]: With dead ends: 312 [2020-12-09 04:33:45,755 INFO L226 Difference]: Without dead ends: 162 [2020-12-09 04:33:45,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:45,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-09 04:33:45,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 152. [2020-12-09 04:33:45,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-12-09 04:33:45,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 226 transitions. [2020-12-09 04:33:45,761 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 226 transitions. Word has length 21 [2020-12-09 04:33:45,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:33:45,762 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 226 transitions. [2020-12-09 04:33:45,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:33:45,762 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 226 transitions. [2020-12-09 04:33:45,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 04:33:45,762 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:33:45,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:33:45,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 04:33:45,763 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:33:45,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:33:45,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1982325943, now seen corresponding path program 1 times [2020-12-09 04:33:45,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:33:45,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126621135] [2020-12-09 04:33:45,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:33:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:33:45,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:33:45,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126621135] [2020-12-09 04:33:45,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:33:45,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 04:33:45,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128139222] [2020-12-09 04:33:45,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 04:33:45,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:33:45,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 04:33:45,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:33:45,796 INFO L87 Difference]: Start difference. First operand 152 states and 226 transitions. Second operand 4 states. [2020-12-09 04:33:45,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:33:45,974 INFO L93 Difference]: Finished difference Result 443 states and 660 transitions. [2020-12-09 04:33:45,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 04:33:45,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-12-09 04:33:45,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:33:45,976 INFO L225 Difference]: With dead ends: 443 [2020-12-09 04:33:45,976 INFO L226 Difference]: Without dead ends: 293 [2020-12-09 04:33:45,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 04:33:45,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-12-09 04:33:45,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 267. [2020-12-09 04:33:45,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-12-09 04:33:45,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 404 transitions. [2020-12-09 04:33:45,988 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 404 transitions. Word has length 21 [2020-12-09 04:33:45,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:33:45,988 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 404 transitions. [2020-12-09 04:33:45,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 04:33:45,988 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 404 transitions. [2020-12-09 04:33:45,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-09 04:33:45,989 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:33:45,989 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:33:45,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 04:33:45,989 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:33:45,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:33:45,990 INFO L82 PathProgramCache]: Analyzing trace with hash -821647032, now seen corresponding path program 1 times [2020-12-09 04:33:45,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:33:45,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289694314] [2020-12-09 04:33:45,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:33:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:33:46,010 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:33:46,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289694314] [2020-12-09 04:33:46,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:33:46,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:33:46,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709261231] [2020-12-09 04:33:46,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:33:46,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:33:46,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:33:46,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:46,016 INFO L87 Difference]: Start difference. First operand 267 states and 404 transitions. Second operand 3 states. [2020-12-09 04:33:46,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:33:46,030 INFO L93 Difference]: Finished difference Result 532 states and 806 transitions. [2020-12-09 04:33:46,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:33:46,030 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-12-09 04:33:46,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:33:46,032 INFO L225 Difference]: With dead ends: 532 [2020-12-09 04:33:46,032 INFO L226 Difference]: Without dead ends: 267 [2020-12-09 04:33:46,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:46,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-12-09 04:33:46,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2020-12-09 04:33:46,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-12-09 04:33:46,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 397 transitions. [2020-12-09 04:33:46,047 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 397 transitions. Word has length 35 [2020-12-09 04:33:46,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:33:46,047 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 397 transitions. [2020-12-09 04:33:46,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:33:46,047 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 397 transitions. [2020-12-09 04:33:46,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-09 04:33:46,048 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:33:46,048 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:33:46,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 04:33:46,049 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:33:46,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:33:46,049 INFO L82 PathProgramCache]: Analyzing trace with hash -800400301, now seen corresponding path program 1 times [2020-12-09 04:33:46,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:33:46,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369411448] [2020-12-09 04:33:46,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:33:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:33:46,075 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:33:46,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369411448] [2020-12-09 04:33:46,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:33:46,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:33:46,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713274367] [2020-12-09 04:33:46,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:33:46,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:33:46,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:33:46,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:46,077 INFO L87 Difference]: Start difference. First operand 267 states and 397 transitions. Second operand 3 states. [2020-12-09 04:33:46,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:33:46,101 INFO L93 Difference]: Finished difference Result 541 states and 803 transitions. [2020-12-09 04:33:46,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:33:46,101 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-12-09 04:33:46,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:33:46,103 INFO L225 Difference]: With dead ends: 541 [2020-12-09 04:33:46,103 INFO L226 Difference]: Without dead ends: 276 [2020-12-09 04:33:46,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:46,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-12-09 04:33:46,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 275. [2020-12-09 04:33:46,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-12-09 04:33:46,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 400 transitions. [2020-12-09 04:33:46,113 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 400 transitions. Word has length 36 [2020-12-09 04:33:46,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:33:46,113 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 400 transitions. [2020-12-09 04:33:46,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:33:46,114 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 400 transitions. [2020-12-09 04:33:46,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-09 04:33:46,114 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:33:46,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:33:46,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 04:33:46,115 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:33:46,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:33:46,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1764479701, now seen corresponding path program 1 times [2020-12-09 04:33:46,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:33:46,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100552939] [2020-12-09 04:33:46,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:33:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:33:46,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:33:46,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100552939] [2020-12-09 04:33:46,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:33:46,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:33:46,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803503005] [2020-12-09 04:33:46,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:33:46,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:33:46,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:33:46,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:46,138 INFO L87 Difference]: Start difference. First operand 275 states and 400 transitions. Second operand 3 states. [2020-12-09 04:33:46,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:33:46,279 INFO L93 Difference]: Finished difference Result 627 states and 931 transitions. [2020-12-09 04:33:46,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:33:46,279 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-12-09 04:33:46,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:33:46,281 INFO L225 Difference]: With dead ends: 627 [2020-12-09 04:33:46,281 INFO L226 Difference]: Without dead ends: 354 [2020-12-09 04:33:46,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:46,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-12-09 04:33:46,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 342. [2020-12-09 04:33:46,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-12-09 04:33:46,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 514 transitions. [2020-12-09 04:33:46,297 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 514 transitions. Word has length 37 [2020-12-09 04:33:46,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:33:46,297 INFO L481 AbstractCegarLoop]: Abstraction has 342 states and 514 transitions. [2020-12-09 04:33:46,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:33:46,297 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 514 transitions. [2020-12-09 04:33:46,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-09 04:33:46,298 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:33:46,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:33:46,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 04:33:46,298 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:33:46,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:33:46,298 INFO L82 PathProgramCache]: Analyzing trace with hash -815257565, now seen corresponding path program 1 times [2020-12-09 04:33:46,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:33:46,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400002572] [2020-12-09 04:33:46,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:33:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:33:46,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:33:46,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400002572] [2020-12-09 04:33:46,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:33:46,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:33:46,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994169469] [2020-12-09 04:33:46,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:33:46,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:33:46,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:33:46,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:46,324 INFO L87 Difference]: Start difference. First operand 342 states and 514 transitions. Second operand 3 states. [2020-12-09 04:33:46,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:33:46,452 INFO L93 Difference]: Finished difference Result 690 states and 1037 transitions. [2020-12-09 04:33:46,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:33:46,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-12-09 04:33:46,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:33:46,454 INFO L225 Difference]: With dead ends: 690 [2020-12-09 04:33:46,454 INFO L226 Difference]: Without dead ends: 350 [2020-12-09 04:33:46,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:46,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-12-09 04:33:46,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 343. [2020-12-09 04:33:46,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-12-09 04:33:46,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 514 transitions. [2020-12-09 04:33:46,466 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 514 transitions. Word has length 38 [2020-12-09 04:33:46,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:33:46,466 INFO L481 AbstractCegarLoop]: Abstraction has 343 states and 514 transitions. [2020-12-09 04:33:46,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:33:46,466 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 514 transitions. [2020-12-09 04:33:46,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-09 04:33:46,467 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:33:46,467 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:33:46,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-09 04:33:46,467 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:33:46,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:33:46,467 INFO L82 PathProgramCache]: Analyzing trace with hash -261455121, now seen corresponding path program 1 times [2020-12-09 04:33:46,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:33:46,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645859039] [2020-12-09 04:33:46,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:33:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:33:46,489 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:33:46,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645859039] [2020-12-09 04:33:46,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:33:46,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 04:33:46,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782583300] [2020-12-09 04:33:46,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:33:46,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:33:46,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:33:46,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:46,491 INFO L87 Difference]: Start difference. First operand 343 states and 514 transitions. Second operand 3 states. [2020-12-09 04:33:46,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:33:46,634 INFO L93 Difference]: Finished difference Result 749 states and 1124 transitions. [2020-12-09 04:33:46,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:33:46,635 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-12-09 04:33:46,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:33:46,637 INFO L225 Difference]: With dead ends: 749 [2020-12-09 04:33:46,637 INFO L226 Difference]: Without dead ends: 408 [2020-12-09 04:33:46,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:46,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2020-12-09 04:33:46,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 382. [2020-12-09 04:33:46,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-12-09 04:33:46,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 562 transitions. [2020-12-09 04:33:46,649 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 562 transitions. Word has length 39 [2020-12-09 04:33:46,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:33:46,650 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 562 transitions. [2020-12-09 04:33:46,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:33:46,650 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 562 transitions. [2020-12-09 04:33:46,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-09 04:33:46,650 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:33:46,651 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:33:46,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-09 04:33:46,651 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:33:46,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:33:46,651 INFO L82 PathProgramCache]: Analyzing trace with hash 486771112, now seen corresponding path program 1 times [2020-12-09 04:33:46,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:33:46,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619552104] [2020-12-09 04:33:46,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:33:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:33:46,672 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:33:46,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619552104] [2020-12-09 04:33:46,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:33:46,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 04:33:46,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549567462] [2020-12-09 04:33:46,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:33:46,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:33:46,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:33:46,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:46,673 INFO L87 Difference]: Start difference. First operand 382 states and 562 transitions. Second operand 3 states. [2020-12-09 04:33:46,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:33:46,698 INFO L93 Difference]: Finished difference Result 1109 states and 1621 transitions. [2020-12-09 04:33:46,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:33:46,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-12-09 04:33:46,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:33:46,703 INFO L225 Difference]: With dead ends: 1109 [2020-12-09 04:33:46,703 INFO L226 Difference]: Without dead ends: 729 [2020-12-09 04:33:46,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:46,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2020-12-09 04:33:46,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 634. [2020-12-09 04:33:46,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-12-09 04:33:46,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 920 transitions. [2020-12-09 04:33:46,734 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 920 transitions. Word has length 42 [2020-12-09 04:33:46,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:33:46,734 INFO L481 AbstractCegarLoop]: Abstraction has 634 states and 920 transitions. [2020-12-09 04:33:46,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:33:46,735 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 920 transitions. [2020-12-09 04:33:46,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-09 04:33:46,736 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:33:46,736 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:33:46,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-09 04:33:46,736 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:33:46,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:33:46,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1949690737, now seen corresponding path program 1 times [2020-12-09 04:33:46,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:33:46,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589750671] [2020-12-09 04:33:46,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:33:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:33:46,765 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:33:46,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589750671] [2020-12-09 04:33:46,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:33:46,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 04:33:46,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471844407] [2020-12-09 04:33:46,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:33:46,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:33:46,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:33:46,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:46,767 INFO L87 Difference]: Start difference. First operand 634 states and 920 transitions. Second operand 3 states. [2020-12-09 04:33:46,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:33:46,825 INFO L93 Difference]: Finished difference Result 1887 states and 2739 transitions. [2020-12-09 04:33:46,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:33:46,825 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-09 04:33:46,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:33:46,830 INFO L225 Difference]: With dead ends: 1887 [2020-12-09 04:33:46,831 INFO L226 Difference]: Without dead ends: 1255 [2020-12-09 04:33:46,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:46,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2020-12-09 04:33:46,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 898. [2020-12-09 04:33:46,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-12-09 04:33:46,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1302 transitions. [2020-12-09 04:33:46,862 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1302 transitions. Word has length 44 [2020-12-09 04:33:46,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:33:46,863 INFO L481 AbstractCegarLoop]: Abstraction has 898 states and 1302 transitions. [2020-12-09 04:33:46,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:33:46,863 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1302 transitions. [2020-12-09 04:33:46,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-09 04:33:46,864 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:33:46,864 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:33:46,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-09 04:33:46,864 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:33:46,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:33:46,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1160623579, now seen corresponding path program 1 times [2020-12-09 04:33:46,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:33:46,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891493139] [2020-12-09 04:33:46,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:33:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 04:33:46,880 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 04:33:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 04:33:46,896 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 04:33:46,920 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 04:33:46,920 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 04:33:46,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-09 04:33:46,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:33:46 BoogieIcfgContainer [2020-12-09 04:33:46,963 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 04:33:46,964 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 04:33:46,964 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 04:33:46,964 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 04:33:46,964 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:33:44" (3/4) ... [2020-12-09 04:33:46,965 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 04:33:47,016 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bddd16c5-6010-4f6c-a013-520c2519d303/bin/utaipan/witness.graphml [2020-12-09 04:33:47,016 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 04:33:47,017 INFO L168 Benchmark]: Toolchain (without parser) took 3717.77 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 74.3 MB in the beginning and 75.6 MB in the end (delta: -1.4 MB). Peak memory consumption was 44.8 MB. Max. memory is 16.1 GB. [2020-12-09 04:33:47,017 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 67.1 MB. Free memory was 41.3 MB in the beginning and 41.3 MB in the end (delta: 67.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:33:47,018 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.54 ms. Allocated memory is still 98.6 MB. Free memory was 73.9 MB in the beginning and 58.9 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 04:33:47,018 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.64 ms. Allocated memory is still 98.6 MB. Free memory was 58.9 MB in the beginning and 56.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 04:33:47,018 INFO L168 Benchmark]: Boogie Preprocessor took 37.81 ms. Allocated memory is still 98.6 MB. Free memory was 56.2 MB in the beginning and 54.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 04:33:47,018 INFO L168 Benchmark]: RCFGBuilder took 815.36 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 53.7 MB in the beginning and 85.3 MB in the end (delta: -31.6 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. [2020-12-09 04:33:47,019 INFO L168 Benchmark]: TraceAbstraction took 2511.44 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 85.3 MB in the beginning and 83.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. [2020-12-09 04:33:47,019 INFO L168 Benchmark]: Witness Printer took 52.26 ms. Allocated memory is still 144.7 MB. Free memory was 83.0 MB in the beginning and 75.6 MB in the end (delta: 7.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 04:33:47,020 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 67.1 MB. Free memory was 41.3 MB in the beginning and 41.3 MB in the end (delta: 67.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 245.54 ms. Allocated memory is still 98.6 MB. Free memory was 73.9 MB in the beginning and 58.9 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.64 ms. Allocated memory is still 98.6 MB. Free memory was 58.9 MB in the beginning and 56.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.81 ms. Allocated memory is still 98.6 MB. Free memory was 56.2 MB in the beginning and 54.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 815.36 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 53.7 MB in the beginning and 85.3 MB in the end (delta: -31.6 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2511.44 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 85.3 MB in the beginning and 83.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. * Witness Printer took 52.26 ms. Allocated memory is still 144.7 MB. Free memory was 83.0 MB in the beginning and 75.6 MB in the end (delta: 7.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 642]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L647] int s ; [L648] int tmp ; [L652] s = 8464 [L13] int s__info_callback = __VERIFIER_nondet_int() ; [L14] int s__in_handshake = __VERIFIER_nondet_int() ; [L15] int s__state ; [L16] int s__new_session ; [L17] int s__server ; [L18] int s__version = __VERIFIER_nondet_int() ; [L19] int s__type ; [L20] int s__init_num ; [L21] int s__hit = __VERIFIER_nondet_int() ; [L22] int s__rwstate ; [L23] int s__init_buf___0 = 1; [L24] int s__debug = __VERIFIER_nondet_int() ; [L25] int s__shutdown ; [L26] int s__cert = __VERIFIER_nondet_int() ; [L27] int s__options = __VERIFIER_nondet_int() ; [L28] int s__verify_mode = __VERIFIER_nondet_int() ; [L29] int s__session__peer = __VERIFIER_nondet_int() ; [L30] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L31] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L33] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L34] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L35] int s__s3__tmp__cert_request ; [L36] int s__s3__tmp__reuse_message ; [L37] int s__s3__tmp__use_rsa_tmp ; [L38] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L39] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L40] int s__s3__tmp__next_state___0 ; [L41] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int() ; [L42] int s__session__cipher ; [L43] int buf ; [L44] unsigned long l ; [L45] unsigned long Time ; [L46] unsigned long tmp ; [L47] int cb ; [L48] long num1 = __VERIFIER_nondet_long() ; [L49] int ret ; [L50] int new_state ; [L51] int state ; [L52] int skip ; [L53] int got_new_session ; [L54] int tmp___1 = __VERIFIER_nondet_int() ; [L55] int tmp___2 = __VERIFIER_nondet_int() ; [L56] int tmp___3 = __VERIFIER_nondet_int() ; [L57] int tmp___4 = __VERIFIER_nondet_int() ; [L58] int tmp___5 = __VERIFIER_nondet_int() ; [L59] int tmp___6 = __VERIFIER_nondet_int() ; [L60] int tmp___7 ; [L61] long tmp___8 = __VERIFIER_nondet_long() ; [L62] int tmp___9 = __VERIFIER_nondet_int() ; [L63] int tmp___10 = __VERIFIER_nondet_int() ; [L64] int blastFlag ; [L65] int __cil_tmp55 ; [L66] unsigned long __cil_tmp56 ; [L67] unsigned long __cil_tmp57 ; [L68] unsigned long __cil_tmp58 ; [L69] unsigned long __cil_tmp59 ; [L70] int __cil_tmp60 ; [L71] unsigned long __cil_tmp61 ; [L74] s__s3__tmp__reuse_message = 0 [L75] s__state = initial_state [L76] blastFlag = 0 [L77] tmp = __VERIFIER_nondet_int() [L78] Time = tmp [L79] cb = 0 [L80] ret = -1 [L81] skip = 0 [L82] got_new_session = 0 [L83] COND FALSE !(s__info_callback != 0) [L86] COND FALSE !(s__ctx__info_callback != 0) [L90] s__in_handshake ++ [L91] COND TRUE tmp___1 + 12288 [L92] COND TRUE tmp___2 + 16384 [L96] COND FALSE !(s__cert == 0) [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND TRUE s__state == 8464 [L273] s__shutdown = 0 [L274] ret = __VERIFIER_nondet_int() [L275] COND TRUE blastFlag == 0 [L276] blastFlag = 1 [L278] COND FALSE !(ret <= 0) [L281] got_new_session = 1 [L282] s__state = 8496 [L283] s__init_num = 0 [L604] COND TRUE ! s__s3__tmp__reuse_message [L605] COND TRUE ! skip [L606] COND TRUE tmp___1 != -12288 [L607] COND TRUE s__state != 8656 [L608] COND TRUE tmp___2 != -16384 [L609] COND FALSE !(state == 8496) [L616] COND FALSE !(\read(s__debug)) [L622] COND FALSE !(cb != 0) [L631] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND FALSE !(s__state == 8464) [L130] COND FALSE !(s__state == 8465) [L133] COND FALSE !(s__state == 8466) [L136] COND TRUE s__state == 8496 [L287] ret = __VERIFIER_nondet_int() [L288] COND TRUE blastFlag == 1 [L289] blastFlag = 2 [L291] COND FALSE !(ret <= 0) [L294] COND FALSE !(\read(s__hit)) [L297] s__state = 8512 [L299] s__init_num = 0 [L604] COND TRUE ! s__s3__tmp__reuse_message [L605] COND TRUE ! skip [L606] COND TRUE tmp___1 != -12288 [L607] COND TRUE s__state != 8656 [L608] COND TRUE tmp___2 != -16384 [L609] COND TRUE state == 8496 [L642] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 112 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.4s, OverallIterations: 17, TraceHistogramMax: 2, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2235 SDtfs, 2347 SDslu, 706 SDs, 0 SdLazy, 1101 SolverSat, 414 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=898occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 576 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 486 NumberOfCodeBlocks, 486 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 425 ConstructedInterpolants, 0 QuantifiedInterpolants, 34354 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 70/70 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 incorrect! Received shutdown request...