./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-2.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_dc5ff6d3-56ce-4ced-8135-c911fca9cc5f/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_dc5ff6d3-56ce-4ced-8135-c911fca9cc5f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dc5ff6d3-56ce-4ced-8135-c911fca9cc5f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dc5ff6d3-56ce-4ced-8135-c911fca9cc5f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_dc5ff6d3-56ce-4ced-8135-c911fca9cc5f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dc5ff6d3-56ce-4ced-8135-c911fca9cc5f/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 39038350569cc1983dc9a58167271fc220c66f89 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 12:58:54,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 12:58:54,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 12:58:54,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 12:58:54,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 12:58:54,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 12:58:54,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 12:58:54,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 12:58:54,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 12:58:54,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 12:58:54,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 12:58:54,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 12:58:54,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 12:58:54,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 12:58:54,805 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 12:58:54,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 12:58:54,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 12:58:54,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 12:58:54,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 12:58:54,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 12:58:54,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 12:58:54,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 12:58:54,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 12:58:54,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 12:58:54,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 12:58:54,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 12:58:54,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 12:58:54,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 12:58:54,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 12:58:54,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 12:58:54,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 12:58:54,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 12:58:54,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 12:58:54,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 12:58:54,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 12:58:54,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 12:58:54,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 12:58:54,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 12:58:54,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 12:58:54,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 12:58:54,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 12:58:54,825 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dc5ff6d3-56ce-4ced-8135-c911fca9cc5f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 12:58:54,845 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 12:58:54,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 12:58:54,846 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 12:58:54,846 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 12:58:54,846 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 12:58:54,846 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 12:58:54,846 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 12:58:54,847 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 12:58:54,847 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 12:58:54,847 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 12:58:54,847 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 12:58:54,847 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 12:58:54,847 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 12:58:54,847 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 12:58:54,848 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 12:58:54,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 12:58:54,848 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 12:58:54,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 12:58:54,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 12:58:54,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 12:58:54,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 12:58:54,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 12:58:54,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 12:58:54,849 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 12:58:54,849 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 12:58:54,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 12:58:54,849 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 12:58:54,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 12:58:54,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 12:58:54,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 12:58:54,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:58:54,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 12:58:54,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 12:58:54,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 12:58:54,850 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 12:58:54,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 12:58:54,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 12:58:54,851 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 12:58:54,851 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 12:58:54,851 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_dc5ff6d3-56ce-4ced-8135-c911fca9cc5f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_dc5ff6d3-56ce-4ced-8135-c911fca9cc5f/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39038350569cc1983dc9a58167271fc220c66f89 [2020-12-09 12:58:55,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 12:58:55,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 12:58:55,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 12:58:55,052 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 12:58:55,052 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 12:58:55,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dc5ff6d3-56ce-4ced-8135-c911fca9cc5f/bin/utaipan/../../sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-2.c [2020-12-09 12:58:55,093 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dc5ff6d3-56ce-4ced-8135-c911fca9cc5f/bin/utaipan/data/18fa356f9/f2b9145f2155417295bb3b546f1c2e56/FLAG8688db355 [2020-12-09 12:58:55,452 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 12:58:55,453 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dc5ff6d3-56ce-4ced-8135-c911fca9cc5f/sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-2.c [2020-12-09 12:58:55,461 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dc5ff6d3-56ce-4ced-8135-c911fca9cc5f/bin/utaipan/data/18fa356f9/f2b9145f2155417295bb3b546f1c2e56/FLAG8688db355 [2020-12-09 12:58:55,873 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dc5ff6d3-56ce-4ced-8135-c911fca9cc5f/bin/utaipan/data/18fa356f9/f2b9145f2155417295bb3b546f1c2e56 [2020-12-09 12:58:55,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 12:58:55,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 12:58:55,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 12:58:55,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 12:58:55,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 12:58:55,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:58:55" (1/1) ... [2020-12-09 12:58:55,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4583e584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:58:55, skipping insertion in model container [2020-12-09 12:58:55,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:58:55" (1/1) ... [2020-12-09 12:58:55,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 12:58:55,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 12:58:56,067 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_dc5ff6d3-56ce-4ced-8135-c911fca9cc5f/sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-2.c[34966,34979] [2020-12-09 12:58:56,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:58:56,082 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 12:58:56,128 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_dc5ff6d3-56ce-4ced-8135-c911fca9cc5f/sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-2.c[34966,34979] [2020-12-09 12:58:56,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:58:56,141 INFO L208 MainTranslator]: Completed translation [2020-12-09 12:58:56,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:58:56 WrapperNode [2020-12-09 12:58:56,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 12:58:56,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 12:58:56,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 12:58:56,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 12:58:56,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:58:56" (1/1) ... [2020-12-09 12:58:56,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:58:56" (1/1) ... [2020-12-09 12:58:56,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 12:58:56,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 12:58:56,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 12:58:56,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 12:58:56,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:58:56" (1/1) ... [2020-12-09 12:58:56,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:58:56" (1/1) ... [2020-12-09 12:58:56,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:58:56" (1/1) ... [2020-12-09 12:58:56,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:58:56" (1/1) ... [2020-12-09 12:58:56,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:58:56" (1/1) ... [2020-12-09 12:58:56,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:58:56" (1/1) ... [2020-12-09 12:58:56,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:58:56" (1/1) ... [2020-12-09 12:58:56,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 12:58:56,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 12:58:56,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 12:58:56,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 12:58:56,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:58:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dc5ff6d3-56ce-4ced-8135-c911fca9cc5f/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 12:58:56,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 12:58:56,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 12:58:56,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 12:58:56,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 12:58:56,386 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 12:58:56,691 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-12-09 12:58:56,691 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-12-09 12:58:56,988 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 12:58:56,989 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 12:58:56,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:58:56 BoogieIcfgContainer [2020-12-09 12:58:56,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 12:58:56,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 12:58:56,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 12:58:56,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 12:58:56,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:58:55" (1/3) ... [2020-12-09 12:58:56,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3811a851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:58:56, skipping insertion in model container [2020-12-09 12:58:56,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:58:56" (2/3) ... [2020-12-09 12:58:56,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3811a851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:58:56, skipping insertion in model container [2020-12-09 12:58:56,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:58:56" (3/3) ... [2020-12-09 12:58:56,996 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_1.cil-2.c [2020-12-09 12:58:57,006 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 12:58:57,008 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 12:58:57,015 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 12:58:57,031 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 12:58:57,032 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 12:58:57,032 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 12:58:57,032 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 12:58:57,032 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 12:58:57,032 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 12:58:57,032 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 12:58:57,032 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 12:58:57,042 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2020-12-09 12:58:57,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 12:58:57,046 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:58:57,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:58:57,047 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:58:57,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:58:57,051 INFO L82 PathProgramCache]: Analyzing trace with hash 974095135, now seen corresponding path program 1 times [2020-12-09 12:58:57,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:58:57,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391861859] [2020-12-09 12:58:57,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:58:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:58:57,196 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 12:58:57,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391861859] [2020-12-09 12:58:57,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:58:57,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:58:57,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053773820] [2020-12-09 12:58:57,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:58:57,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:58:57,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:58:57,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:58:57,211 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 3 states. [2020-12-09 12:58:57,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:58:57,370 INFO L93 Difference]: Finished difference Result 196 states and 338 transitions. [2020-12-09 12:58:57,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:58:57,371 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-09 12:58:57,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:58:57,382 INFO L225 Difference]: With dead ends: 196 [2020-12-09 12:58:57,382 INFO L226 Difference]: Without dead ends: 107 [2020-12-09 12:58:57,385 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 12:58:57,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-09 12:58:57,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 102. [2020-12-09 12:58:57,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-12-09 12:58:57,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 155 transitions. [2020-12-09 12:58:57,426 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 155 transitions. Word has length 19 [2020-12-09 12:58:57,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:58:57,427 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 155 transitions. [2020-12-09 12:58:57,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:58:57,427 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 155 transitions. [2020-12-09 12:58:57,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-09 12:58:57,428 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:58:57,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:58:57,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 12:58:57,429 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:58:57,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:58:57,430 INFO L82 PathProgramCache]: Analyzing trace with hash 127670874, now seen corresponding path program 1 times [2020-12-09 12:58:57,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:58:57,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100813503] [2020-12-09 12:58:57,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:58:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:58:57,476 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 12:58:57,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100813503] [2020-12-09 12:58:57,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:58:57,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:58:57,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792235683] [2020-12-09 12:58:57,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:58:57,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:58:57,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:58:57,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:58:57,479 INFO L87 Difference]: Start difference. First operand 102 states and 155 transitions. Second operand 3 states. [2020-12-09 12:58:57,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:58:57,588 INFO L93 Difference]: Finished difference Result 230 states and 354 transitions. [2020-12-09 12:58:57,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:58:57,589 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-09 12:58:57,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:58:57,591 INFO L225 Difference]: With dead ends: 230 [2020-12-09 12:58:57,591 INFO L226 Difference]: Without dead ends: 129 [2020-12-09 12:58:57,592 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 12:58:57,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-12-09 12:58:57,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 124. [2020-12-09 12:58:57,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-12-09 12:58:57,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 194 transitions. [2020-12-09 12:58:57,604 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 194 transitions. Word has length 20 [2020-12-09 12:58:57,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:58:57,604 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 194 transitions. [2020-12-09 12:58:57,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:58:57,605 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 194 transitions. [2020-12-09 12:58:57,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-09 12:58:57,606 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:58:57,607 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:58:57,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 12:58:57,607 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:58:57,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:58:57,608 INFO L82 PathProgramCache]: Analyzing trace with hash -722663545, now seen corresponding path program 1 times [2020-12-09 12:58:57,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:58:57,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695722912] [2020-12-09 12:58:57,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:58:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:58:57,659 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:58:57,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695722912] [2020-12-09 12:58:57,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:58:57,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:58:57,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832306587] [2020-12-09 12:58:57,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:58:57,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:58:57,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:58:57,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:58:57,662 INFO L87 Difference]: Start difference. First operand 124 states and 194 transitions. Second operand 3 states. [2020-12-09 12:58:57,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:58:57,746 INFO L93 Difference]: Finished difference Result 268 states and 423 transitions. [2020-12-09 12:58:57,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:58:57,747 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-12-09 12:58:57,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:58:57,748 INFO L225 Difference]: With dead ends: 268 [2020-12-09 12:58:57,748 INFO L226 Difference]: Without dead ends: 145 [2020-12-09 12:58:57,749 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 12:58:57,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-09 12:58:57,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2020-12-09 12:58:57,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-12-09 12:58:57,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 226 transitions. [2020-12-09 12:58:57,762 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 226 transitions. Word has length 37 [2020-12-09 12:58:57,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:58:57,762 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 226 transitions. [2020-12-09 12:58:57,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:58:57,762 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 226 transitions. [2020-12-09 12:58:57,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-09 12:58:57,764 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:58:57,764 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:58:57,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 12:58:57,764 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:58:57,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:58:57,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1445870942, now seen corresponding path program 1 times [2020-12-09 12:58:57,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:58:57,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063612633] [2020-12-09 12:58:57,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:58:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:58:57,809 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:58:57,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063612633] [2020-12-09 12:58:57,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:58:57,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:58:57,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131863191] [2020-12-09 12:58:57,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:58:57,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:58:57,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:58:57,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:58:57,811 INFO L87 Difference]: Start difference. First operand 143 states and 226 transitions. Second operand 3 states. [2020-12-09 12:58:57,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:58:57,901 INFO L93 Difference]: Finished difference Result 287 states and 453 transitions. [2020-12-09 12:58:57,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:58:57,902 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-12-09 12:58:57,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:58:57,903 INFO L225 Difference]: With dead ends: 287 [2020-12-09 12:58:57,903 INFO L226 Difference]: Without dead ends: 145 [2020-12-09 12:58:57,904 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 12:58:57,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-09 12:58:57,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2020-12-09 12:58:57,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-12-09 12:58:57,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 224 transitions. [2020-12-09 12:58:57,911 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 224 transitions. Word has length 38 [2020-12-09 12:58:57,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:58:57,911 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 224 transitions. [2020-12-09 12:58:57,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:58:57,912 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 224 transitions. [2020-12-09 12:58:57,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-09 12:58:57,913 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:58:57,913 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 12:58:57,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 12:58:57,914 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:58:57,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:58:57,914 INFO L82 PathProgramCache]: Analyzing trace with hash -590919311, now seen corresponding path program 1 times [2020-12-09 12:58:57,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:58:57,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317853996] [2020-12-09 12:58:57,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:58:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:58:57,945 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-09 12:58:57,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317853996] [2020-12-09 12:58:57,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:58:57,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:58:57,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825236978] [2020-12-09 12:58:57,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:58:57,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:58:57,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:58:57,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:58:57,947 INFO L87 Difference]: Start difference. First operand 143 states and 224 transitions. Second operand 3 states. [2020-12-09 12:58:58,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:58:58,025 INFO L93 Difference]: Finished difference Result 305 states and 481 transitions. [2020-12-09 12:58:58,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:58:58,026 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-12-09 12:58:58,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:58:58,027 INFO L225 Difference]: With dead ends: 305 [2020-12-09 12:58:58,027 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 12:58:58,027 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 12:58:58,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 12:58:58,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 160. [2020-12-09 12:58:58,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-12-09 12:58:58,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 251 transitions. [2020-12-09 12:58:58,037 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 251 transitions. Word has length 52 [2020-12-09 12:58:58,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:58:58,037 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 251 transitions. [2020-12-09 12:58:58,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:58:58,037 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 251 transitions. [2020-12-09 12:58:58,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-09 12:58:58,039 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:58:58,040 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 12:58:58,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 12:58:58,040 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:58:58,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:58:58,041 INFO L82 PathProgramCache]: Analyzing trace with hash -633533354, now seen corresponding path program 1 times [2020-12-09 12:58:58,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:58:58,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168299850] [2020-12-09 12:58:58,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:58:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:58:58,081 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-09 12:58:58,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168299850] [2020-12-09 12:58:58,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:58:58,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:58:58,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431742344] [2020-12-09 12:58:58,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:58:58,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:58:58,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:58:58,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:58:58,082 INFO L87 Difference]: Start difference. First operand 160 states and 251 transitions. Second operand 3 states. [2020-12-09 12:58:58,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:58:58,155 INFO L93 Difference]: Finished difference Result 322 states and 505 transitions. [2020-12-09 12:58:58,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:58:58,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-09 12:58:58,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:58:58,157 INFO L225 Difference]: With dead ends: 322 [2020-12-09 12:58:58,157 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 12:58:58,157 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 12:58:58,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 12:58:58,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 160. [2020-12-09 12:58:58,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-12-09 12:58:58,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 248 transitions. [2020-12-09 12:58:58,163 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 248 transitions. Word has length 53 [2020-12-09 12:58:58,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:58:58,163 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 248 transitions. [2020-12-09 12:58:58,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:58:58,164 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 248 transitions. [2020-12-09 12:58:58,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-09 12:58:58,165 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:58:58,165 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:58:58,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 12:58:58,165 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:58:58,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:58:58,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1842641970, now seen corresponding path program 1 times [2020-12-09 12:58:58,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:58:58,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748936995] [2020-12-09 12:58:58,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:58:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:58:58,205 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:58:58,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748936995] [2020-12-09 12:58:58,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:58:58,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:58:58,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774202445] [2020-12-09 12:58:58,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:58:58,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:58:58,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:58:58,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:58:58,207 INFO L87 Difference]: Start difference. First operand 160 states and 248 transitions. Second operand 3 states. [2020-12-09 12:58:58,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:58:58,312 INFO L93 Difference]: Finished difference Result 358 states and 562 transitions. [2020-12-09 12:58:58,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:58:58,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-09 12:58:58,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:58:58,313 INFO L225 Difference]: With dead ends: 358 [2020-12-09 12:58:58,313 INFO L226 Difference]: Without dead ends: 198 [2020-12-09 12:58:58,314 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 12:58:58,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-12-09 12:58:58,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-12-09 12:58:58,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-12-09 12:58:58,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 313 transitions. [2020-12-09 12:58:58,322 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 313 transitions. Word has length 56 [2020-12-09 12:58:58,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:58:58,323 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 313 transitions. [2020-12-09 12:58:58,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:58:58,323 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 313 transitions. [2020-12-09 12:58:58,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-09 12:58:58,324 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:58:58,324 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:58:58,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 12:58:58,325 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:58:58,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:58:58,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1726474027, now seen corresponding path program 1 times [2020-12-09 12:58:58,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:58:58,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155514100] [2020-12-09 12:58:58,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:58:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:58:58,363 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-12-09 12:58:58,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155514100] [2020-12-09 12:58:58,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:58:58,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:58:58,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225035000] [2020-12-09 12:58:58,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:58:58,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:58:58,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:58:58,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:58:58,365 INFO L87 Difference]: Start difference. First operand 198 states and 313 transitions. Second operand 3 states. [2020-12-09 12:58:58,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:58:58,439 INFO L93 Difference]: Finished difference Result 412 states and 653 transitions. [2020-12-09 12:58:58,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:58:58,439 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-09 12:58:58,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:58:58,441 INFO L225 Difference]: With dead ends: 412 [2020-12-09 12:58:58,441 INFO L226 Difference]: Without dead ends: 215 [2020-12-09 12:58:58,441 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 12:58:58,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-12-09 12:58:58,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 213. [2020-12-09 12:58:58,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-12-09 12:58:58,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 334 transitions. [2020-12-09 12:58:58,447 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 334 transitions. Word has length 65 [2020-12-09 12:58:58,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:58:58,447 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 334 transitions. [2020-12-09 12:58:58,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:58:58,447 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 334 transitions. [2020-12-09 12:58:58,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-09 12:58:58,448 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:58:58,448 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:58:58,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 12:58:58,448 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:58:58,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:58:58,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1362899280, now seen corresponding path program 1 times [2020-12-09 12:58:58,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:58:58,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389234505] [2020-12-09 12:58:58,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:58:58,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:58:58,473 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-12-09 12:58:58,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389234505] [2020-12-09 12:58:58,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:58:58,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:58:58,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12476721] [2020-12-09 12:58:58,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:58:58,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:58:58,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:58:58,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:58:58,475 INFO L87 Difference]: Start difference. First operand 213 states and 334 transitions. Second operand 3 states. [2020-12-09 12:58:58,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:58:58,578 INFO L93 Difference]: Finished difference Result 427 states and 669 transitions. [2020-12-09 12:58:58,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:58:58,578 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-09 12:58:58,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:58:58,580 INFO L225 Difference]: With dead ends: 427 [2020-12-09 12:58:58,580 INFO L226 Difference]: Without dead ends: 215 [2020-12-09 12:58:58,580 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 12:58:58,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-12-09 12:58:58,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 213. [2020-12-09 12:58:58,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-12-09 12:58:58,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 329 transitions. [2020-12-09 12:58:58,589 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 329 transitions. Word has length 66 [2020-12-09 12:58:58,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:58:58,589 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 329 transitions. [2020-12-09 12:58:58,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:58:58,590 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 329 transitions. [2020-12-09 12:58:58,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-09 12:58:58,591 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:58:58,591 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 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 12:58:58,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 12:58:58,591 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:58:58,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:58:58,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1715660304, now seen corresponding path program 1 times [2020-12-09 12:58:58,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:58:58,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698917765] [2020-12-09 12:58:58,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:58:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:58:58,622 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-12-09 12:58:58,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698917765] [2020-12-09 12:58:58,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:58:58,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:58:58,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764633082] [2020-12-09 12:58:58,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:58:58,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:58:58,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:58:58,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:58:58,625 INFO L87 Difference]: Start difference. First operand 213 states and 329 transitions. Second operand 3 states. [2020-12-09 12:58:58,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:58:58,701 INFO L93 Difference]: Finished difference Result 440 states and 681 transitions. [2020-12-09 12:58:58,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:58:58,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-09 12:58:58,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:58:58,703 INFO L225 Difference]: With dead ends: 440 [2020-12-09 12:58:58,703 INFO L226 Difference]: Without dead ends: 228 [2020-12-09 12:58:58,704 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 12:58:58,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-12-09 12:58:58,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 226. [2020-12-09 12:58:58,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-12-09 12:58:58,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 345 transitions. [2020-12-09 12:58:58,713 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 345 transitions. Word has length 76 [2020-12-09 12:58:58,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:58:58,714 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 345 transitions. [2020-12-09 12:58:58,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:58:58,714 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 345 transitions. [2020-12-09 12:58:58,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-09 12:58:58,715 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:58:58,715 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 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 12:58:58,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 12:58:58,715 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:58:58,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:58:58,716 INFO L82 PathProgramCache]: Analyzing trace with hash 2108633269, now seen corresponding path program 1 times [2020-12-09 12:58:58,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:58:58,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159038508] [2020-12-09 12:58:58,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:58:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:58:58,746 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-12-09 12:58:58,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159038508] [2020-12-09 12:58:58,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:58:58,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:58:58,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484176469] [2020-12-09 12:58:58,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:58:58,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:58:58,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:58:58,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:58:58,748 INFO L87 Difference]: Start difference. First operand 226 states and 345 transitions. Second operand 3 states. [2020-12-09 12:58:58,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:58:58,834 INFO L93 Difference]: Finished difference Result 453 states and 691 transitions. [2020-12-09 12:58:58,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:58:58,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-09 12:58:58,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:58:58,836 INFO L225 Difference]: With dead ends: 453 [2020-12-09 12:58:58,836 INFO L226 Difference]: Without dead ends: 228 [2020-12-09 12:58:58,837 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 12:58:58,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-12-09 12:58:58,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 226. [2020-12-09 12:58:58,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-12-09 12:58:58,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 339 transitions. [2020-12-09 12:58:58,846 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 339 transitions. Word has length 77 [2020-12-09 12:58:58,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:58:58,847 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 339 transitions. [2020-12-09 12:58:58,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:58:58,847 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 339 transitions. [2020-12-09 12:58:58,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-09 12:58:58,848 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:58:58,848 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2020-12-09 12:58:58,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 12:58:58,848 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:58:58,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:58:58,849 INFO L82 PathProgramCache]: Analyzing trace with hash -684184935, now seen corresponding path program 1 times [2020-12-09 12:58:58,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:58:58,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588280294] [2020-12-09 12:58:58,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:58:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:58:58,913 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-12-09 12:58:58,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588280294] [2020-12-09 12:58:58,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291133913] [2020-12-09 12:58:58,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dc5ff6d3-56ce-4ced-8135-c911fca9cc5f/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 12:58:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:58:58,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 12:58:58,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:58:59,078 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-12-09 12:58:59,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:58:59,137 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 12:58:59,137 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 12:58:59,205 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 12:58:59,205 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 12:58:59,230 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 12:58:59,231 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 12:58:59,271 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-12-09 12:58:59,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1910586954] [2020-12-09 12:58:59,292 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2020-12-09 12:58:59,293 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 12:58:59,297 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 12:58:59,300 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 12:58:59,301 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 12:58:59,652 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-12-09 12:58:59,888 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-12-09 12:59:00,143 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-12-09 12:59:03,266 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 12:59:03,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 12:59:03,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 6 [2020-12-09 12:59:03,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660762794] [2020-12-09 12:59:03,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 12:59:03,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:59:03,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 12:59:03,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 12:59:03,269 INFO L87 Difference]: Start difference. First operand 226 states and 339 transitions. Second operand 7 states. [2020-12-09 12:59:03,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:59:03,347 INFO L93 Difference]: Finished difference Result 1062 states and 1603 transitions. [2020-12-09 12:59:03,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 12:59:03,348 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 85 [2020-12-09 12:59:03,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:59:03,352 INFO L225 Difference]: With dead ends: 1062 [2020-12-09 12:59:03,352 INFO L226 Difference]: Without dead ends: 1060 [2020-12-09 12:59:03,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 166 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 12:59:03,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2020-12-09 12:59:03,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 1057. [2020-12-09 12:59:03,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1057 states. [2020-12-09 12:59:03,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1595 transitions. [2020-12-09 12:59:03,379 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1595 transitions. Word has length 85 [2020-12-09 12:59:03,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:59:03,379 INFO L481 AbstractCegarLoop]: Abstraction has 1057 states and 1595 transitions. [2020-12-09 12:59:03,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 12:59:03,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1595 transitions. [2020-12-09 12:59:03,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-09 12:59:03,381 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:59:03,381 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2020-12-09 12:59:03,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-09 12:59:03,582 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:59:03,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:59:03,583 INFO L82 PathProgramCache]: Analyzing trace with hash -755864805, now seen corresponding path program 1 times [2020-12-09 12:59:03,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:59:03,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507364603] [2020-12-09 12:59:03,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:59:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 12:59:03,635 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 12:59:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 12:59:03,655 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 12:59:03,691 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 12:59:03,691 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 12:59:03,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2020-12-09 12:59:03,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:59:03 BoogieIcfgContainer [2020-12-09 12:59:03,755 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 12:59:03,755 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 12:59:03,755 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 12:59:03,755 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 12:59:03,755 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:58:56" (3/4) ... [2020-12-09 12:59:03,757 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 12:59:03,819 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_dc5ff6d3-56ce-4ced-8135-c911fca9cc5f/bin/utaipan/witness.graphml [2020-12-09 12:59:03,820 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 12:59:03,820 INFO L168 Benchmark]: Toolchain (without parser) took 7943.67 ms. Allocated memory was 98.6 MB in the beginning and 293.6 MB in the end (delta: 195.0 MB). Free memory was 57.8 MB in the beginning and 201.9 MB in the end (delta: -144.0 MB). Peak memory consumption was 51.7 MB. Max. memory is 16.1 GB. [2020-12-09 12:59:03,820 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 98.6 MB. Free memory was 74.5 MB in the beginning and 74.3 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:59:03,821 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.39 ms. Allocated memory is still 98.6 MB. Free memory was 57.7 MB in the beginning and 69.6 MB in the end (delta: -11.8 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2020-12-09 12:59:03,821 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.40 ms. Allocated memory is still 98.6 MB. Free memory was 69.6 MB in the beginning and 66.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:59:03,821 INFO L168 Benchmark]: Boogie Preprocessor took 26.19 ms. Allocated memory is still 98.6 MB. Free memory was 66.8 MB in the beginning and 64.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:59:03,821 INFO L168 Benchmark]: RCFGBuilder took 781.15 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 64.7 MB in the beginning and 73.4 MB in the end (delta: -8.7 MB). Peak memory consumption was 31.8 MB. Max. memory is 16.1 GB. [2020-12-09 12:59:03,822 INFO L168 Benchmark]: TraceAbstraction took 6762.82 ms. Allocated memory was 121.6 MB in the beginning and 293.6 MB in the end (delta: 172.0 MB). Free memory was 73.4 MB in the beginning and 213.4 MB in the end (delta: -140.0 MB). Peak memory consumption was 31.7 MB. Max. memory is 16.1 GB. [2020-12-09 12:59:03,822 INFO L168 Benchmark]: Witness Printer took 64.71 ms. Allocated memory is still 293.6 MB. Free memory was 213.4 MB in the beginning and 201.9 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 12:59:03,823 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 98.6 MB. Free memory was 74.5 MB in the beginning and 74.3 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 264.39 ms. Allocated memory is still 98.6 MB. Free memory was 57.7 MB in the beginning and 69.6 MB in the end (delta: -11.8 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.40 ms. Allocated memory is still 98.6 MB. Free memory was 69.6 MB in the beginning and 66.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.19 ms. Allocated memory is still 98.6 MB. Free memory was 66.8 MB in the beginning and 64.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 781.15 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 64.7 MB in the beginning and 73.4 MB in the end (delta: -8.7 MB). Peak memory consumption was 31.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6762.82 ms. Allocated memory was 121.6 MB in the beginning and 293.6 MB in the end (delta: 172.0 MB). Free memory was 73.4 MB in the beginning and 213.4 MB in the end (delta: -140.0 MB). Peak memory consumption was 31.7 MB. Max. memory is 16.1 GB. * Witness Printer took 64.71 ms. Allocated memory is still 293.6 MB. Free memory was 213.4 MB in the beginning and 201.9 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 545]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L550] int s ; [L554] s = 12292 [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__bbio = __VERIFIER_nondet_int() ; [L22] int s__wbio = __VERIFIER_nondet_int() ; [L23] int s__hit = __VERIFIER_nondet_int() ; [L24] int s__rwstate ; [L25] int s__init_buf___0 = 1; [L26] int s__debug = __VERIFIER_nondet_int() ; [L27] int s__shutdown ; [L28] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L29] int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_connect = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_hit = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_int() ; [L33] int s__s3__change_cipher_spec ; [L34] int s__s3__flags ; [L35] int s__s3__delay_buf_pop_ret ; [L36] int s__s3__tmp__cert_req = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__new_compression = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L39] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L40] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L41] int s__s3__tmp__next_state___0 ; [L42] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int() ; [L43] int s__session__cipher ; [L44] int s__session__compress_meth ; [L45] int buf ; [L46] unsigned long tmp ; [L47] unsigned long l ; [L48] int num1 ; [L49] int cb ; [L50] int ret ; [L51] int new_state ; [L52] int state ; [L53] int skip ; [L54] int tmp___0 ; [L55] int tmp___1 = __VERIFIER_nondet_int() ; [L56] int tmp___2 = __VERIFIER_nondet_int() ; [L57] int tmp___3 = __VERIFIER_nondet_int() ; [L58] int tmp___4 = __VERIFIER_nondet_int() ; [L59] int tmp___5 = __VERIFIER_nondet_int() ; [L60] int tmp___6 = __VERIFIER_nondet_int() ; [L61] int tmp___7 = __VERIFIER_nondet_int() ; [L62] int tmp___8 = __VERIFIER_nondet_int() ; [L63] int tmp___9 = __VERIFIER_nondet_int() ; [L64] int blastFlag ; [L65] int __cil_tmp55 ; [L66] long __cil_tmp56 ; [L67] long __cil_tmp57 ; [L68] long __cil_tmp58 ; [L69] long __cil_tmp59 ; [L70] long __cil_tmp60 ; [L71] long __cil_tmp61 ; [L72] long __cil_tmp62 ; [L73] long __cil_tmp63 ; [L74] long __cil_tmp64 ; [L78] s__state = initial_state [L79] blastFlag = 0 [L80] tmp = __VERIFIER_nondet_int() [L81] cb = 0 [L82] ret = -1 [L83] skip = 0 [L84] tmp___0 = 0 [L85] COND FALSE !(s__info_callback != 0) [L88] COND FALSE !(s__ctx__info_callback != 0) [L92] s__in_handshake ++ [L93] COND FALSE !(tmp___1 - 12288) [L99] COND TRUE 1 [L101] state = s__state [L102] COND TRUE s__state == 12292 [L204] s__new_session = 1 [L205] s__state = 4096 [L206] s__ctx__stats__sess_connect_renegotiate ++ [L211] s__server = 0 [L212] COND FALSE !(cb != 0) [L216] __cil_tmp55 = s__version - 65280 [L217] COND FALSE !(__cil_tmp55 != 768) [L222] s__type = 4096 [L223] COND FALSE !(s__init_buf___0 == 0) [L235] COND FALSE !(! tmp___4) [L239] COND FALSE !(! tmp___5) [L243] s__state = 4368 [L244] s__ctx__stats__sess_connect ++ [L245] s__init_num = 0 [L517] COND FALSE !(! s__s3__tmp__reuse_message) [L534] 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 == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND TRUE s__state == 4368 [L249] s__shutdown = 0 [L250] ret = __VERIFIER_nondet_int() [L251] COND TRUE blastFlag == 0 [L252] blastFlag = 1 [L254] COND FALSE !(ret <= 0) [L257] s__state = 4384 [L258] s__init_num = 0 [L259] COND FALSE !(s__bbio != s__wbio) [L517] COND FALSE !(! s__s3__tmp__reuse_message) [L534] 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 == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND TRUE s__state == 4384 [L265] ret = __VERIFIER_nondet_int() [L266] COND TRUE blastFlag == 1 [L267] blastFlag = 2 [L269] COND FALSE !(ret <= 0) [L272] COND FALSE !(\read(s__hit)) [L275] s__state = 4400 [L277] s__init_num = 0 [L517] COND FALSE !(! s__s3__tmp__reuse_message) [L534] 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 == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND TRUE s__state == 4400 [L281] COND FALSE !(s__s3__tmp__new_cipher__algorithms - 256) [L284] ret = __VERIFIER_nondet_int() [L285] COND TRUE blastFlag == 2 [L286] blastFlag = 3 [L288] COND FALSE !(ret <= 0) [L292] s__state = 4416 [L293] s__init_num = 0 [L517] COND FALSE !(! s__s3__tmp__reuse_message) [L534] 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 == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND FALSE !(s__state == 4400) [L132] COND FALSE !(s__state == 4401) [L135] COND TRUE s__state == 4416 [L297] ret = __VERIFIER_nondet_int() [L298] COND TRUE blastFlag == 3 [L299] blastFlag = 4 [L301] COND FALSE !(ret <= 0) [L304] s__state = 4432 [L305] s__init_num = 0 [L306] COND FALSE !(! tmp___6) [L517] COND FALSE !(! s__s3__tmp__reuse_message) [L534] 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 == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND FALSE !(s__state == 4400) [L132] COND FALSE !(s__state == 4401) [L135] COND FALSE !(s__state == 4416) [L138] COND FALSE !(s__state == 4417) [L141] COND TRUE s__state == 4432 [L313] ret = __VERIFIER_nondet_int() [L314] COND TRUE blastFlag == 4 [L545] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.6s, OverallIterations: 13, TraceHistogramMax: 6, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 958 SDtfs, 1365 SDslu, 1002 SDs, 0 SdLazy, 956 SolverSat, 325 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 177 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1057occurred 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, 12 MinimizatonAttempts, 31 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 815 NumberOfCodeBlocks, 815 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 800 ConstructedInterpolants, 0 QuantifiedInterpolants, 141199 SizeOfPredicates, 0 NumberOfNonLiveVariables, 259 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 14 InterpolantComputations, 11 PerfectInterpolantSequences, 621/825 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...