./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-1.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_34b643e7-6147-4194-807f-9e32ef01ff22/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_34b643e7-6147-4194-807f-9e32ef01ff22/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_34b643e7-6147-4194-807f-9e32ef01ff22/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_34b643e7-6147-4194-807f-9e32ef01ff22/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_34b643e7-6147-4194-807f-9e32ef01ff22/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_34b643e7-6147-4194-807f-9e32ef01ff22/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 a3bbefcee290f98530e25ab3f5cc4cda5aa0150b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 16:31:34,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 16:31:34,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 16:31:34,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 16:31:34,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 16:31:34,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 16:31:34,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 16:31:34,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 16:31:34,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 16:31:34,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 16:31:34,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 16:31:34,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 16:31:34,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 16:31:34,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 16:31:34,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 16:31:34,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 16:31:34,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 16:31:34,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 16:31:34,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 16:31:34,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 16:31:34,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 16:31:34,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 16:31:34,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 16:31:34,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 16:31:34,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 16:31:34,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 16:31:34,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 16:31:34,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 16:31:34,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 16:31:34,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 16:31:34,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 16:31:34,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 16:31:34,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 16:31:34,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 16:31:34,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 16:31:34,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 16:31:34,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 16:31:34,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 16:31:34,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 16:31:34,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 16:31:34,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 16:31:34,604 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_34b643e7-6147-4194-807f-9e32ef01ff22/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 16:31:34,626 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 16:31:34,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 16:31:34,627 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 16:31:34,627 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 16:31:34,627 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 16:31:34,628 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 16:31:34,628 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 16:31:34,628 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 16:31:34,628 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 16:31:34,628 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 16:31:34,629 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 16:31:34,629 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 16:31:34,629 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 16:31:34,629 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 16:31:34,629 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 16:31:34,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 16:31:34,630 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 16:31:34,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 16:31:34,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 16:31:34,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 16:31:34,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 16:31:34,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 16:31:34,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 16:31:34,631 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 16:31:34,631 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 16:31:34,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 16:31:34,632 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 16:31:34,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 16:31:34,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 16:31:34,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 16:31:34,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 16:31:34,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 16:31:34,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 16:31:34,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 16:31:34,633 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 16:31:34,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 16:31:34,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 16:31:34,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 16:31:34,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 16:31:34,634 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_34b643e7-6147-4194-807f-9e32ef01ff22/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_34b643e7-6147-4194-807f-9e32ef01ff22/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3bbefcee290f98530e25ab3f5cc4cda5aa0150b [2020-12-09 16:31:34,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 16:31:34,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 16:31:34,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 16:31:34,843 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 16:31:34,843 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 16:31:34,844 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_34b643e7-6147-4194-807f-9e32ef01ff22/bin/utaipan/../../sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-1.c [2020-12-09 16:31:34,885 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_34b643e7-6147-4194-807f-9e32ef01ff22/bin/utaipan/data/015fa76b3/94ac6a64083c4fa4989311feed973d2f/FLAG399709e1a [2020-12-09 16:31:35,270 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 16:31:35,270 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_34b643e7-6147-4194-807f-9e32ef01ff22/sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-1.c [2020-12-09 16:31:35,281 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_34b643e7-6147-4194-807f-9e32ef01ff22/bin/utaipan/data/015fa76b3/94ac6a64083c4fa4989311feed973d2f/FLAG399709e1a [2020-12-09 16:31:35,292 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_34b643e7-6147-4194-807f-9e32ef01ff22/bin/utaipan/data/015fa76b3/94ac6a64083c4fa4989311feed973d2f [2020-12-09 16:31:35,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 16:31:35,296 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 16:31:35,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 16:31:35,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 16:31:35,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 16:31:35,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:31:35" (1/1) ... [2020-12-09 16:31:35,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e3f1888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:31:35, skipping insertion in model container [2020-12-09 16:31:35,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:31:35" (1/1) ... [2020-12-09 16:31:35,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 16:31:35,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 16:31:35,500 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_34b643e7-6147-4194-807f-9e32ef01ff22/sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-1.c[42831,42844] [2020-12-09 16:31:35,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:31:35,516 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 16:31:35,563 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_34b643e7-6147-4194-807f-9e32ef01ff22/sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-1.c[42831,42844] [2020-12-09 16:31:35,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:31:35,580 INFO L208 MainTranslator]: Completed translation [2020-12-09 16:31:35,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:31:35 WrapperNode [2020-12-09 16:31:35,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 16:31:35,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 16:31:35,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 16:31:35,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 16:31:35,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:31:35" (1/1) ... [2020-12-09 16:31:35,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:31:35" (1/1) ... [2020-12-09 16:31:35,631 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 16:31:35,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 16:31:35,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 16:31:35,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 16:31:35,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:31:35" (1/1) ... [2020-12-09 16:31:35,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:31:35" (1/1) ... [2020-12-09 16:31:35,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:31:35" (1/1) ... [2020-12-09 16:31:35,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:31:35" (1/1) ... [2020-12-09 16:31:35,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:31:35" (1/1) ... [2020-12-09 16:31:35,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:31:35" (1/1) ... [2020-12-09 16:31:35,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:31:35" (1/1) ... [2020-12-09 16:31:35,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 16:31:35,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 16:31:35,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 16:31:35,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 16:31:35,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:31:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34b643e7-6147-4194-807f-9e32ef01ff22/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 16:31:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 16:31:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 16:31:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 16:31:35,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 16:31:35,844 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 16:31:36,227 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-12-09 16:31:36,227 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-12-09 16:31:36,430 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 16:31:36,430 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 16:31:36,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:31:36 BoogieIcfgContainer [2020-12-09 16:31:36,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 16:31:36,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 16:31:36,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 16:31:36,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 16:31:36,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:31:35" (1/3) ... [2020-12-09 16:31:36,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b1026e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:31:36, skipping insertion in model container [2020-12-09 16:31:36,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:31:35" (2/3) ... [2020-12-09 16:31:36,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b1026e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:31:36, skipping insertion in model container [2020-12-09 16:31:36,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:31:36" (3/3) ... [2020-12-09 16:31:36,438 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1.cil-1.c [2020-12-09 16:31:36,449 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 16:31:36,452 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 16:31:36,460 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 16:31:36,479 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 16:31:36,479 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 16:31:36,479 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 16:31:36,479 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 16:31:36,479 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 16:31:36,479 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 16:31:36,479 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 16:31:36,479 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 16:31:36,492 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states. [2020-12-09 16:31:36,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-09 16:31:36,497 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:31:36,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:31:36,498 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:31:36,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:31:36,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1718029911, now seen corresponding path program 1 times [2020-12-09 16:31:36,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:31:36,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484234149] [2020-12-09 16:31:36,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:31:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:31:36,670 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 16:31:36,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484234149] [2020-12-09 16:31:36,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:31:36,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:31:36,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182267084] [2020-12-09 16:31:36,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:31:36,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:31:36,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:31:36,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:31:36,685 INFO L87 Difference]: Start difference. First operand 107 states. Second operand 3 states. [2020-12-09 16:31:36,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:31:36,851 INFO L93 Difference]: Finished difference Result 261 states and 456 transitions. [2020-12-09 16:31:36,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:31:36,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-12-09 16:31:36,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:31:36,861 INFO L225 Difference]: With dead ends: 261 [2020-12-09 16:31:36,861 INFO L226 Difference]: Without dead ends: 150 [2020-12-09 16:31:36,863 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 16:31:36,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-12-09 16:31:36,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 144. [2020-12-09 16:31:36,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-12-09 16:31:36,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 232 transitions. [2020-12-09 16:31:36,898 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 232 transitions. Word has length 40 [2020-12-09 16:31:36,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:31:36,899 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 232 transitions. [2020-12-09 16:31:36,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:31:36,899 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 232 transitions. [2020-12-09 16:31:36,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-09 16:31:36,901 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:31:36,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:31:36,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 16:31:36,901 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:31:36,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:31:36,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1939271527, now seen corresponding path program 1 times [2020-12-09 16:31:36,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:31:36,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852003727] [2020-12-09 16:31:36,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:31:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:31:36,953 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 16:31:36,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852003727] [2020-12-09 16:31:36,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:31:36,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:31:36,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361605515] [2020-12-09 16:31:36,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:31:36,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:31:36,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:31:36,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:31:36,955 INFO L87 Difference]: Start difference. First operand 144 states and 232 transitions. Second operand 3 states. [2020-12-09 16:31:37,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:31:37,076 INFO L93 Difference]: Finished difference Result 333 states and 546 transitions. [2020-12-09 16:31:37,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:31:37,077 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-12-09 16:31:37,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:31:37,079 INFO L225 Difference]: With dead ends: 333 [2020-12-09 16:31:37,079 INFO L226 Difference]: Without dead ends: 189 [2020-12-09 16:31:37,081 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 16:31:37,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-12-09 16:31:37,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 183. [2020-12-09 16:31:37,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-12-09 16:31:37,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 305 transitions. [2020-12-09 16:31:37,097 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 305 transitions. Word has length 41 [2020-12-09 16:31:37,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:31:37,098 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 305 transitions. [2020-12-09 16:31:37,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:31:37,098 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 305 transitions. [2020-12-09 16:31:37,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-09 16:31:37,101 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:31:37,101 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:31:37,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 16:31:37,102 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:31:37,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:31:37,102 INFO L82 PathProgramCache]: Analyzing trace with hash 150413504, now seen corresponding path program 1 times [2020-12-09 16:31:37,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:31:37,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244144627] [2020-12-09 16:31:37,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:31:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:31:37,163 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:31:37,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244144627] [2020-12-09 16:31:37,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:31:37,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:31:37,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003694695] [2020-12-09 16:31:37,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:31:37,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:31:37,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:31:37,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:31:37,165 INFO L87 Difference]: Start difference. First operand 183 states and 305 transitions. Second operand 3 states. [2020-12-09 16:31:37,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:31:37,265 INFO L93 Difference]: Finished difference Result 393 states and 662 transitions. [2020-12-09 16:31:37,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:31:37,266 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-09 16:31:37,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:31:37,268 INFO L225 Difference]: With dead ends: 393 [2020-12-09 16:31:37,268 INFO L226 Difference]: Without dead ends: 212 [2020-12-09 16:31:37,269 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 16:31:37,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-12-09 16:31:37,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2020-12-09 16:31:37,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-12-09 16:31:37,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 357 transitions. [2020-12-09 16:31:37,285 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 357 transitions. Word has length 67 [2020-12-09 16:31:37,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:31:37,285 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 357 transitions. [2020-12-09 16:31:37,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:31:37,285 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 357 transitions. [2020-12-09 16:31:37,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-09 16:31:37,289 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:31:37,289 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:31:37,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 16:31:37,289 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:31:37,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:31:37,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1015701275, now seen corresponding path program 1 times [2020-12-09 16:31:37,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:31:37,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999631248] [2020-12-09 16:31:37,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:31:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:31:37,329 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-09 16:31:37,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999631248] [2020-12-09 16:31:37,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:31:37,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:31:37,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796055065] [2020-12-09 16:31:37,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:31:37,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:31:37,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:31:37,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:31:37,331 INFO L87 Difference]: Start difference. First operand 212 states and 357 transitions. Second operand 3 states. [2020-12-09 16:31:37,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:31:37,423 INFO L93 Difference]: Finished difference Result 437 states and 736 transitions. [2020-12-09 16:31:37,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:31:37,423 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-09 16:31:37,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:31:37,425 INFO L225 Difference]: With dead ends: 437 [2020-12-09 16:31:37,425 INFO L226 Difference]: Without dead ends: 227 [2020-12-09 16:31:37,425 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 16:31:37,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-12-09 16:31:37,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2020-12-09 16:31:37,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-12-09 16:31:37,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 376 transitions. [2020-12-09 16:31:37,436 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 376 transitions. Word has length 78 [2020-12-09 16:31:37,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:31:37,437 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 376 transitions. [2020-12-09 16:31:37,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:31:37,437 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 376 transitions. [2020-12-09 16:31:37,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-09 16:31:37,439 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:31:37,439 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:31:37,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 16:31:37,439 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:31:37,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:31:37,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1494572002, now seen corresponding path program 1 times [2020-12-09 16:31:37,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:31:37,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933296819] [2020-12-09 16:31:37,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:31:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:31:37,495 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:31:37,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933296819] [2020-12-09 16:31:37,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:31:37,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:31:37,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591145188] [2020-12-09 16:31:37,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:31:37,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:31:37,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:31:37,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:31:37,497 INFO L87 Difference]: Start difference. First operand 225 states and 376 transitions. Second operand 3 states. [2020-12-09 16:31:37,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:31:37,617 INFO L93 Difference]: Finished difference Result 489 states and 823 transitions. [2020-12-09 16:31:37,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:31:37,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-09 16:31:37,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:31:37,619 INFO L225 Difference]: With dead ends: 489 [2020-12-09 16:31:37,619 INFO L226 Difference]: Without dead ends: 266 [2020-12-09 16:31:37,620 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 16:31:37,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-12-09 16:31:37,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 263. [2020-12-09 16:31:37,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-12-09 16:31:37,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 444 transitions. [2020-12-09 16:31:37,628 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 444 transitions. Word has length 78 [2020-12-09 16:31:37,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:31:37,629 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 444 transitions. [2020-12-09 16:31:37,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:31:37,629 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 444 transitions. [2020-12-09 16:31:37,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-09 16:31:37,630 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:31:37,630 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:31:37,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 16:31:37,630 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:31:37,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:31:37,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1755401318, now seen corresponding path program 1 times [2020-12-09 16:31:37,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:31:37,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089884550] [2020-12-09 16:31:37,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:31:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:31:37,666 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-09 16:31:37,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089884550] [2020-12-09 16:31:37,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:31:37,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:31:37,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541066023] [2020-12-09 16:31:37,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:31:37,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:31:37,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:31:37,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:31:37,667 INFO L87 Difference]: Start difference. First operand 263 states and 444 transitions. Second operand 3 states. [2020-12-09 16:31:37,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:31:37,748 INFO L93 Difference]: Finished difference Result 526 states and 888 transitions. [2020-12-09 16:31:37,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:31:37,749 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-09 16:31:37,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:31:37,751 INFO L225 Difference]: With dead ends: 526 [2020-12-09 16:31:37,751 INFO L226 Difference]: Without dead ends: 265 [2020-12-09 16:31:37,752 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 16:31:37,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-12-09 16:31:37,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 263. [2020-12-09 16:31:37,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-12-09 16:31:37,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 440 transitions. [2020-12-09 16:31:37,763 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 440 transitions. Word has length 79 [2020-12-09 16:31:37,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:31:37,763 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 440 transitions. [2020-12-09 16:31:37,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:31:37,764 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 440 transitions. [2020-12-09 16:31:37,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-09 16:31:37,765 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:31:37,765 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:31:37,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 16:31:37,765 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:31:37,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:31:37,766 INFO L82 PathProgramCache]: Analyzing trace with hash -186544590, now seen corresponding path program 1 times [2020-12-09 16:31:37,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:31:37,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93229431] [2020-12-09 16:31:37,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:31:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:31:37,807 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:31:37,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93229431] [2020-12-09 16:31:37,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:31:37,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:31:37,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155943529] [2020-12-09 16:31:37,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:31:37,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:31:37,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:31:37,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:31:37,810 INFO L87 Difference]: Start difference. First operand 263 states and 440 transitions. Second operand 3 states. [2020-12-09 16:31:37,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:31:37,937 INFO L93 Difference]: Finished difference Result 527 states and 881 transitions. [2020-12-09 16:31:37,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:31:37,938 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-09 16:31:37,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:31:37,939 INFO L225 Difference]: With dead ends: 527 [2020-12-09 16:31:37,939 INFO L226 Difference]: Without dead ends: 264 [2020-12-09 16:31:37,940 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 16:31:37,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-12-09 16:31:37,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 261. [2020-12-09 16:31:37,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-12-09 16:31:37,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 435 transitions. [2020-12-09 16:31:37,949 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 435 transitions. Word has length 79 [2020-12-09 16:31:37,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:31:37,949 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 435 transitions. [2020-12-09 16:31:37,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:31:37,949 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 435 transitions. [2020-12-09 16:31:37,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-09 16:31:37,950 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:31:37,950 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:31:37,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 16:31:37,951 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:31:37,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:31:37,951 INFO L82 PathProgramCache]: Analyzing trace with hash 2131459841, now seen corresponding path program 1 times [2020-12-09 16:31:37,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:31:37,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402545140] [2020-12-09 16:31:37,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:31:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:31:37,980 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-12-09 16:31:37,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402545140] [2020-12-09 16:31:37,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:31:37,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:31:37,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124756333] [2020-12-09 16:31:37,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:31:37,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:31:37,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:31:37,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:31:37,982 INFO L87 Difference]: Start difference. First operand 261 states and 435 transitions. Second operand 3 states. [2020-12-09 16:31:38,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:31:38,066 INFO L93 Difference]: Finished difference Result 527 states and 877 transitions. [2020-12-09 16:31:38,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:31:38,066 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-12-09 16:31:38,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:31:38,068 INFO L225 Difference]: With dead ends: 527 [2020-12-09 16:31:38,068 INFO L226 Difference]: Without dead ends: 268 [2020-12-09 16:31:38,069 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 16:31:38,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-12-09 16:31:38,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2020-12-09 16:31:38,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-12-09 16:31:38,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 438 transitions. [2020-12-09 16:31:38,076 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 438 transitions. Word has length 88 [2020-12-09 16:31:38,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:31:38,077 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 438 transitions. [2020-12-09 16:31:38,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:31:38,077 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 438 transitions. [2020-12-09 16:31:38,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-09 16:31:38,078 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:31:38,078 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:31:38,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 16:31:38,078 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:31:38,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:31:38,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1841082440, now seen corresponding path program 1 times [2020-12-09 16:31:38,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:31:38,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506865601] [2020-12-09 16:31:38,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:31:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:31:38,103 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-09 16:31:38,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506865601] [2020-12-09 16:31:38,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:31:38,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:31:38,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489006888] [2020-12-09 16:31:38,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:31:38,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:31:38,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:31:38,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:31:38,105 INFO L87 Difference]: Start difference. First operand 268 states and 438 transitions. Second operand 3 states. [2020-12-09 16:31:38,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:31:38,208 INFO L93 Difference]: Finished difference Result 563 states and 923 transitions. [2020-12-09 16:31:38,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:31:38,208 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-12-09 16:31:38,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:31:38,209 INFO L225 Difference]: With dead ends: 563 [2020-12-09 16:31:38,210 INFO L226 Difference]: Without dead ends: 297 [2020-12-09 16:31:38,210 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 16:31:38,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-12-09 16:31:38,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 295. [2020-12-09 16:31:38,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-12-09 16:31:38,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 481 transitions. [2020-12-09 16:31:38,218 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 481 transitions. Word has length 92 [2020-12-09 16:31:38,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:31:38,219 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 481 transitions. [2020-12-09 16:31:38,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:31:38,219 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 481 transitions. [2020-12-09 16:31:38,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-09 16:31:38,220 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:31:38,220 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:31:38,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 16:31:38,220 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:31:38,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:31:38,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1403380381, now seen corresponding path program 1 times [2020-12-09 16:31:38,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:31:38,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733621589] [2020-12-09 16:31:38,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:31:38,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:31:38,244 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-09 16:31:38,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733621589] [2020-12-09 16:31:38,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:31:38,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:31:38,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236635644] [2020-12-09 16:31:38,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:31:38,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:31:38,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:31:38,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:31:38,246 INFO L87 Difference]: Start difference. First operand 295 states and 481 transitions. Second operand 3 states. [2020-12-09 16:31:38,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:31:38,353 INFO L93 Difference]: Finished difference Result 590 states and 962 transitions. [2020-12-09 16:31:38,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:31:38,353 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 93 [2020-12-09 16:31:38,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:31:38,355 INFO L225 Difference]: With dead ends: 590 [2020-12-09 16:31:38,355 INFO L226 Difference]: Without dead ends: 297 [2020-12-09 16:31:38,355 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 16:31:38,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-12-09 16:31:38,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 295. [2020-12-09 16:31:38,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-12-09 16:31:38,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 477 transitions. [2020-12-09 16:31:38,364 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 477 transitions. Word has length 93 [2020-12-09 16:31:38,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:31:38,364 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 477 transitions. [2020-12-09 16:31:38,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:31:38,364 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 477 transitions. [2020-12-09 16:31:38,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-09 16:31:38,365 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:31:38,365 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:31:38,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 16:31:38,365 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:31:38,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:31:38,366 INFO L82 PathProgramCache]: Analyzing trace with hash 122717256, now seen corresponding path program 1 times [2020-12-09 16:31:38,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:31:38,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889513667] [2020-12-09 16:31:38,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:31:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:31:38,393 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-09 16:31:38,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889513667] [2020-12-09 16:31:38,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:31:38,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:31:38,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734578128] [2020-12-09 16:31:38,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:31:38,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:31:38,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:31:38,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:31:38,395 INFO L87 Difference]: Start difference. First operand 295 states and 477 transitions. Second operand 3 states. [2020-12-09 16:31:38,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:31:38,506 INFO L93 Difference]: Finished difference Result 621 states and 1008 transitions. [2020-12-09 16:31:38,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:31:38,506 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-12-09 16:31:38,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:31:38,508 INFO L225 Difference]: With dead ends: 621 [2020-12-09 16:31:38,508 INFO L226 Difference]: Without dead ends: 328 [2020-12-09 16:31:38,508 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 16:31:38,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-12-09 16:31:38,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 320. [2020-12-09 16:31:38,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-12-09 16:31:38,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 515 transitions. [2020-12-09 16:31:38,518 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 515 transitions. Word has length 94 [2020-12-09 16:31:38,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:31:38,518 INFO L481 AbstractCegarLoop]: Abstraction has 320 states and 515 transitions. [2020-12-09 16:31:38,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:31:38,518 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 515 transitions. [2020-12-09 16:31:38,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-09 16:31:38,519 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:31:38,519 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:31:38,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 16:31:38,519 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:31:38,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:31:38,520 INFO L82 PathProgramCache]: Analyzing trace with hash 793849257, now seen corresponding path program 1 times [2020-12-09 16:31:38,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:31:38,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867416603] [2020-12-09 16:31:38,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:31:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:31:38,546 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-12-09 16:31:38,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867416603] [2020-12-09 16:31:38,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:31:38,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:31:38,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641143248] [2020-12-09 16:31:38,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:31:38,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:31:38,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:31:38,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:31:38,548 INFO L87 Difference]: Start difference. First operand 320 states and 515 transitions. Second operand 3 states. [2020-12-09 16:31:38,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:31:38,651 INFO L93 Difference]: Finished difference Result 659 states and 1061 transitions. [2020-12-09 16:31:38,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:31:38,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-09 16:31:38,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:31:38,653 INFO L225 Difference]: With dead ends: 659 [2020-12-09 16:31:38,653 INFO L226 Difference]: Without dead ends: 341 [2020-12-09 16:31:38,654 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 16:31:38,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-12-09 16:31:38,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 339. [2020-12-09 16:31:38,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-12-09 16:31:38,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 540 transitions. [2020-12-09 16:31:38,669 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 540 transitions. Word has length 95 [2020-12-09 16:31:38,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:31:38,669 INFO L481 AbstractCegarLoop]: Abstraction has 339 states and 540 transitions. [2020-12-09 16:31:38,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:31:38,669 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 540 transitions. [2020-12-09 16:31:38,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-09 16:31:38,671 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:31:38,671 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:31:38,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 16:31:38,671 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:31:38,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:31:38,672 INFO L82 PathProgramCache]: Analyzing trace with hash -2009495597, now seen corresponding path program 1 times [2020-12-09 16:31:38,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:31:38,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505862029] [2020-12-09 16:31:38,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:31:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:31:38,708 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-09 16:31:38,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505862029] [2020-12-09 16:31:38,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:31:38,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:31:38,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350568714] [2020-12-09 16:31:38,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:31:38,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:31:38,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:31:38,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:31:38,710 INFO L87 Difference]: Start difference. First operand 339 states and 540 transitions. Second operand 3 states. [2020-12-09 16:31:38,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:31:38,857 INFO L93 Difference]: Finished difference Result 684 states and 1091 transitions. [2020-12-09 16:31:38,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:31:38,857 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-09 16:31:38,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:31:38,859 INFO L225 Difference]: With dead ends: 684 [2020-12-09 16:31:38,859 INFO L226 Difference]: Without dead ends: 347 [2020-12-09 16:31:38,860 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 16:31:38,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-12-09 16:31:38,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 339. [2020-12-09 16:31:38,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-12-09 16:31:38,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 535 transitions. [2020-12-09 16:31:38,875 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 535 transitions. Word has length 95 [2020-12-09 16:31:38,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:31:38,876 INFO L481 AbstractCegarLoop]: Abstraction has 339 states and 535 transitions. [2020-12-09 16:31:38,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:31:38,876 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 535 transitions. [2020-12-09 16:31:38,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-09 16:31:38,877 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:31:38,877 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 16:31:38,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-09 16:31:38,878 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:31:38,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:31:38,878 INFO L82 PathProgramCache]: Analyzing trace with hash -2079233634, now seen corresponding path program 1 times [2020-12-09 16:31:38,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:31:38,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283583218] [2020-12-09 16:31:38,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:31:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:31:38,910 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-12-09 16:31:38,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283583218] [2020-12-09 16:31:38,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:31:38,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:31:38,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715096403] [2020-12-09 16:31:38,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:31:38,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:31:38,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:31:38,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:31:38,912 INFO L87 Difference]: Start difference. First operand 339 states and 535 transitions. Second operand 3 states. [2020-12-09 16:31:39,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:31:39,029 INFO L93 Difference]: Finished difference Result 678 states and 1070 transitions. [2020-12-09 16:31:39,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:31:39,029 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-12-09 16:31:39,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:31:39,031 INFO L225 Difference]: With dead ends: 678 [2020-12-09 16:31:39,031 INFO L226 Difference]: Without dead ends: 341 [2020-12-09 16:31:39,031 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 16:31:39,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-12-09 16:31:39,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 339. [2020-12-09 16:31:39,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-12-09 16:31:39,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 529 transitions. [2020-12-09 16:31:39,041 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 529 transitions. Word has length 96 [2020-12-09 16:31:39,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:31:39,041 INFO L481 AbstractCegarLoop]: Abstraction has 339 states and 529 transitions. [2020-12-09 16:31:39,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:31:39,042 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 529 transitions. [2020-12-09 16:31:39,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-09 16:31:39,042 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:31:39,043 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:31:39,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-09 16:31:39,043 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:31:39,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:31:39,043 INFO L82 PathProgramCache]: Analyzing trace with hash -643941794, now seen corresponding path program 1 times [2020-12-09 16:31:39,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:31:39,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637738971] [2020-12-09 16:31:39,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:31:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 16:31:39,065 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 16:31:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 16:31:39,084 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 16:31:39,120 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 16:31:39,120 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 16:31:39,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-09 16:31:39,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:31:39 BoogieIcfgContainer [2020-12-09 16:31:39,183 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 16:31:39,184 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 16:31:39,184 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 16:31:39,184 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 16:31:39,184 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:31:36" (3/4) ... [2020-12-09 16:31:39,186 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 16:31:39,257 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_34b643e7-6147-4194-807f-9e32ef01ff22/bin/utaipan/witness.graphml [2020-12-09 16:31:39,257 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 16:31:39,258 INFO L168 Benchmark]: Toolchain (without parser) took 3962.26 ms. Allocated memory was 104.9 MB in the beginning and 155.2 MB in the end (delta: 50.3 MB). Free memory was 63.9 MB in the beginning and 80.0 MB in the end (delta: -16.0 MB). Peak memory consumption was 34.9 MB. Max. memory is 16.1 GB. [2020-12-09 16:31:39,259 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 104.9 MB. Free memory is still 80.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 16:31:39,259 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.19 ms. Allocated memory is still 104.9 MB. Free memory was 63.6 MB in the beginning and 76.7 MB in the end (delta: -13.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2020-12-09 16:31:39,259 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.48 ms. Allocated memory is still 104.9 MB. Free memory was 76.7 MB in the beginning and 73.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 16:31:39,259 INFO L168 Benchmark]: Boogie Preprocessor took 37.19 ms. Allocated memory is still 104.9 MB. Free memory was 73.7 MB in the beginning and 71.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 16:31:39,260 INFO L168 Benchmark]: RCFGBuilder took 762.34 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 71.6 MB in the beginning and 97.1 MB in the end (delta: -25.6 MB). Peak memory consumption was 36.2 MB. Max. memory is 16.1 GB. [2020-12-09 16:31:39,260 INFO L168 Benchmark]: TraceAbstraction took 2749.94 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 97.1 MB in the beginning and 92.6 MB in the end (delta: 4.6 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. [2020-12-09 16:31:39,260 INFO L168 Benchmark]: Witness Printer took 73.20 ms. Allocated memory is still 155.2 MB. Free memory was 92.6 MB in the beginning and 80.0 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 16:31:39,262 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 104.9 MB. Free memory is still 80.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 284.19 ms. Allocated memory is still 104.9 MB. Free memory was 63.6 MB in the beginning and 76.7 MB in the end (delta: -13.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.48 ms. Allocated memory is still 104.9 MB. Free memory was 76.7 MB in the beginning and 73.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.19 ms. Allocated memory is still 104.9 MB. Free memory was 73.7 MB in the beginning and 71.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 762.34 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 71.6 MB in the beginning and 97.1 MB in the end (delta: -25.6 MB). Peak memory consumption was 36.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2749.94 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 97.1 MB in the beginning and 92.6 MB in the end (delta: 4.6 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. * Witness Printer took 73.20 ms. Allocated memory is still 155.2 MB. Free memory was 92.6 MB in the beginning and 80.0 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 613]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L618] int s ; [L619] int tmp ; [L623] 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 = __VERIFIER_nondet_int() ; [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 = __VERIFIER_nondet_int() ; [L44] unsigned long l ; [L45] unsigned long Time ; [L46] unsigned long tmp = __VERIFIER_nondet_long() ; [L47] int cb ; [L48] long num1 ; [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 ; [L57] int tmp___4 ; [L58] int tmp___5 ; [L59] int tmp___6 ; [L60] int tmp___7 ; [L61] long tmp___8 = __VERIFIER_nondet_long() ; [L62] int tmp___9 ; [L63] int tmp___10 ; [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 ; [L75] s__state = initial_state [L76] blastFlag = 0 [L77] Time = tmp [L78] cb = 0 [L79] ret = -1 [L80] skip = 0 [L81] got_new_session = 0 [L82] COND TRUE s__info_callback != 0 [L83] cb = s__info_callback [L89] s__in_handshake ++ [L90] COND FALSE !(tmp___1 + 12288) [L95] COND FALSE !(s__cert == 0) [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND TRUE s__state == 8464 [L270] s__shutdown = 0 [L271] ret = __VERIFIER_nondet_int() [L272] COND TRUE blastFlag == 0 [L273] blastFlag = 1 [L275] COND FALSE !(ret <= 0) [L278] got_new_session = 1 [L279] s__state = 8496 [L280] s__init_num = 0 [L585] COND FALSE !(! s__s3__tmp__reuse_message) [L602] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND TRUE s__state == 8496 [L284] ret = __VERIFIER_nondet_int() [L285] COND TRUE blastFlag == 1 [L286] blastFlag = 2 [L288] COND FALSE !(ret <= 0) [L291] COND TRUE \read(s__hit) [L292] s__state = 8656 [L296] s__init_num = 0 [L585] COND FALSE !(! s__s3__tmp__reuse_message) [L602] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND FALSE !(s__state == 8528) [L150] COND FALSE !(s__state == 8529) [L153] COND FALSE !(s__state == 8544) [L156] COND FALSE !(s__state == 8545) [L159] COND FALSE !(s__state == 8560) [L162] COND FALSE !(s__state == 8561) [L165] COND FALSE !(s__state == 8448) [L168] COND FALSE !(s__state == 8576) [L171] COND FALSE !(s__state == 8577) [L174] COND FALSE !(s__state == 8592) [L177] COND FALSE !(s__state == 8593) [L180] COND FALSE !(s__state == 8608) [L183] COND FALSE !(s__state == 8609) [L186] COND FALSE !(s__state == 8640) [L189] COND FALSE !(s__state == 8641) [L192] COND TRUE s__state == 8656 [L490] s__session__cipher = s__s3__tmp__new_cipher [L491] tmp___9 = __VERIFIER_nondet_int() [L492] COND FALSE !(! tmp___9) [L496] ret = __VERIFIER_nondet_int() [L497] COND TRUE blastFlag == 2 [L498] blastFlag = 3 [L500] COND FALSE !(ret <= 0) [L503] s__state = 8672 [L504] s__init_num = 0 [L505] tmp___10 = __VERIFIER_nondet_int() [L506] COND FALSE !(! tmp___10) [L585] COND FALSE !(! s__s3__tmp__reuse_message) [L602] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND FALSE !(s__state == 8528) [L150] COND FALSE !(s__state == 8529) [L153] COND FALSE !(s__state == 8544) [L156] COND FALSE !(s__state == 8545) [L159] COND FALSE !(s__state == 8560) [L162] COND FALSE !(s__state == 8561) [L165] COND FALSE !(s__state == 8448) [L168] COND FALSE !(s__state == 8576) [L171] COND FALSE !(s__state == 8577) [L174] COND FALSE !(s__state == 8592) [L177] COND FALSE !(s__state == 8593) [L180] COND FALSE !(s__state == 8608) [L183] COND FALSE !(s__state == 8609) [L186] COND FALSE !(s__state == 8640) [L189] COND FALSE !(s__state == 8641) [L192] COND FALSE !(s__state == 8656) [L195] COND FALSE !(s__state == 8657) [L198] COND TRUE s__state == 8672 [L513] ret = __VERIFIER_nondet_int() [L514] COND FALSE !(blastFlag == 4) [L517] COND TRUE blastFlag == 3 [L613] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 107 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 15, TraceHistogramMax: 4, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1274 SDtfs, 1579 SDslu, 168 SDs, 0 SdLazy, 1291 SolverSat, 569 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=339occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 46 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 1224 NumberOfCodeBlocks, 1224 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1101 ConstructedInterpolants, 0 QuantifiedInterpolants, 156725 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 603/603 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...