./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 425afc8b22e60c0a2f2550983f32b043f3f437d4 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 425afc8b22e60c0a2f2550983f32b043f3f437d4 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.25-f470102 [2019-12-07 14:02:25,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:02:25,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:02:25,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:02:25,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:02:25,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:02:25,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:02:25,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:02:25,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:02:25,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:02:25,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:02:25,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:02:25,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:02:25,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:02:25,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:02:25,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:02:25,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:02:25,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:02:25,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:02:25,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:02:25,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:02:25,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:02:25,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:02:25,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:02:25,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:02:25,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:02:25,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:02:25,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:02:25,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:02:25,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:02:25,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:02:25,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:02:25,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:02:25,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:02:25,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:02:25,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:02:25,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:02:25,057 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:02:25,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:02:25,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:02:25,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:02:25,059 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 14:02:25,069 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:02:25,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:02:25,070 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 14:02:25,070 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 14:02:25,070 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 14:02:25,070 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 14:02:25,070 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 14:02:25,070 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 14:02:25,070 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 14:02:25,071 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 14:02:25,071 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 14:02:25,071 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 14:02:25,071 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 14:02:25,071 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 14:02:25,071 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 14:02:25,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:02:25,072 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 14:02:25,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 14:02:25,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 14:02:25,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:02:25,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 14:02:25,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 14:02:25,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 14:02:25,073 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 14:02:25,073 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 14:02:25,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:02:25,073 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:02:25,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 14:02:25,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:02:25,074 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 14:02:25,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 14:02:25,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:02:25,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:02:25,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 14:02:25,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 14:02:25,075 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 14:02:25,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 14:02:25,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 14:02:25,075 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:02:25,075 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 14:02:25,076 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_8325cbc7-9d7f-487a-92eb-0a3bf6212773/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(__VERIFIER_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 -> 425afc8b22e60c0a2f2550983f32b043f3f437d4 [2019-12-07 14:02:25,177 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:02:25,187 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:02:25,190 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:02:25,191 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:02:25,191 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:02:25,192 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c [2019-12-07 14:02:25,229 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/data/b6fc034e3/cb0623c201c446d180d4a7e3e8415b0b/FLAG2a8a4347e [2019-12-07 14:02:25,610 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:02:25,611 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c [2019-12-07 14:02:25,619 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/data/b6fc034e3/cb0623c201c446d180d4a7e3e8415b0b/FLAG2a8a4347e [2019-12-07 14:02:25,972 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/data/b6fc034e3/cb0623c201c446d180d4a7e3e8415b0b [2019-12-07 14:02:25,974 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:02:25,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:02:25,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:02:25,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:02:25,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:02:25,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:02:25" (1/1) ... [2019-12-07 14:02:25,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25b1f9b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:02:25, skipping insertion in model container [2019-12-07 14:02:25,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:02:25" (1/1) ... [2019-12-07 14:02:25,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:02:26,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:02:26,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:02:26,181 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:02:26,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:02:26,226 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:02:26,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:02:26 WrapperNode [2019-12-07 14:02:26,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:02:26,227 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:02:26,227 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:02:26,227 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:02:26,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:02:26" (1/1) ... [2019-12-07 14:02:26,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:02:26" (1/1) ... [2019-12-07 14:02:26,266 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:02:26,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:02:26,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:02:26,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:02:26,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:02:26" (1/1) ... [2019-12-07 14:02:26,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:02:26" (1/1) ... [2019-12-07 14:02:26,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:02:26" (1/1) ... [2019-12-07 14:02:26,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:02:26" (1/1) ... [2019-12-07 14:02:26,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:02:26" (1/1) ... [2019-12-07 14:02:26,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:02:26" (1/1) ... [2019-12-07 14:02:26,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:02:26" (1/1) ... [2019-12-07 14:02:26,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:02:26,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:02:26,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:02:26,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:02:26,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:02:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/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 [2019-12-07 14:02:26,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:02:26,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:02:26,402 WARN L738 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-12-07 14:02:26,672 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2019-12-07 14:02:26,672 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2019-12-07 14:02:26,891 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:02:26,891 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 14:02:26,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:02:26 BoogieIcfgContainer [2019-12-07 14:02:26,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:02:26,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 14:02:26,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 14:02:26,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 14:02:26,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 02:02:25" (1/3) ... [2019-12-07 14:02:26,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40748db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:02:26, skipping insertion in model container [2019-12-07 14:02:26,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:02:26" (2/3) ... [2019-12-07 14:02:26,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40748db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:02:26, skipping insertion in model container [2019-12-07 14:02:26,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:02:26" (3/3) ... [2019-12-07 14:02:26,899 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.BV.c.cil-2a.c [2019-12-07 14:02:26,909 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 14:02:26,915 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 14:02:26,925 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 14:02:26,947 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 14:02:26,947 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 14:02:26,947 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 14:02:26,947 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:02:26,948 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:02:26,948 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 14:02:26,948 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:02:26,948 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 14:02:26,963 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2019-12-07 14:02:26,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 14:02:26,969 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:02:26,969 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:02:26,970 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:02:26,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:02:26,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1132451607, now seen corresponding path program 1 times [2019-12-07 14:02:26,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:02:26,983 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918933053] [2019-12-07 14:02:26,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:02:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:02:27,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:02:27,118 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918933053] [2019-12-07 14:02:27,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:02:27,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 14:02:27,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644639414] [2019-12-07 14:02:27,123 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:02:27,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:02:27,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:02:27,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:27,137 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 3 states. [2019-12-07 14:02:27,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:02:27,239 INFO L93 Difference]: Finished difference Result 169 states and 293 transitions. [2019-12-07 14:02:27,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:02:27,240 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-12-07 14:02:27,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:02:27,248 INFO L225 Difference]: With dead ends: 169 [2019-12-07 14:02:27,248 INFO L226 Difference]: Without dead ends: 83 [2019-12-07 14:02:27,251 INFO L630 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 [2019-12-07 14:02:27,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-12-07 14:02:27,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2019-12-07 14:02:27,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-12-07 14:02:27,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 120 transitions. [2019-12-07 14:02:27,278 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 120 transitions. Word has length 19 [2019-12-07 14:02:27,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:02:27,278 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 120 transitions. [2019-12-07 14:02:27,279 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:02:27,279 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 120 transitions. [2019-12-07 14:02:27,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-12-07 14:02:27,279 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:02:27,279 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:02:27,280 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:02:27,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:02:27,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1430014113, now seen corresponding path program 1 times [2019-12-07 14:02:27,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:02:27,280 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160402215] [2019-12-07 14:02:27,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:02:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:02:27,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:02:27,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160402215] [2019-12-07 14:02:27,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:02:27,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 14:02:27,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719041425] [2019-12-07 14:02:27,320 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:02:27,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:02:27,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:02:27,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:27,321 INFO L87 Difference]: Start difference. First operand 83 states and 120 transitions. Second operand 3 states. [2019-12-07 14:02:27,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:02:27,405 INFO L93 Difference]: Finished difference Result 178 states and 261 transitions. [2019-12-07 14:02:27,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:02:27,405 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-12-07 14:02:27,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:02:27,407 INFO L225 Difference]: With dead ends: 178 [2019-12-07 14:02:27,407 INFO L226 Difference]: Without dead ends: 98 [2019-12-07 14:02:27,408 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:27,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-12-07 14:02:27,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2019-12-07 14:02:27,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-12-07 14:02:27,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 136 transitions. [2019-12-07 14:02:27,416 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 136 transitions. Word has length 28 [2019-12-07 14:02:27,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:02:27,416 INFO L462 AbstractCegarLoop]: Abstraction has 96 states and 136 transitions. [2019-12-07 14:02:27,416 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:02:27,416 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 136 transitions. [2019-12-07 14:02:27,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-12-07 14:02:27,417 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:02:27,418 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-12-07 14:02:27,418 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:02:27,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:02:27,418 INFO L82 PathProgramCache]: Analyzing trace with hash 359435353, now seen corresponding path program 1 times [2019-12-07 14:02:27,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:02:27,418 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655483719] [2019-12-07 14:02:27,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:02:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:02:27,465 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 14:02:27,465 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655483719] [2019-12-07 14:02:27,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:02:27,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 14:02:27,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391347197] [2019-12-07 14:02:27,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:02:27,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:02:27,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:02:27,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:27,467 INFO L87 Difference]: Start difference. First operand 96 states and 136 transitions. Second operand 3 states. [2019-12-07 14:02:27,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:02:27,549 INFO L93 Difference]: Finished difference Result 206 states and 297 transitions. [2019-12-07 14:02:27,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:02:27,549 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2019-12-07 14:02:27,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:02:27,550 INFO L225 Difference]: With dead ends: 206 [2019-12-07 14:02:27,551 INFO L226 Difference]: Without dead ends: 113 [2019-12-07 14:02:27,551 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:27,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2019-12-07 14:02:27,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2019-12-07 14:02:27,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-12-07 14:02:27,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 154 transitions. [2019-12-07 14:02:27,558 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 154 transitions. Word has length 39 [2019-12-07 14:02:27,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:02:27,558 INFO L462 AbstractCegarLoop]: Abstraction has 111 states and 154 transitions. [2019-12-07 14:02:27,558 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:02:27,559 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 154 transitions. [2019-12-07 14:02:27,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-12-07 14:02:27,560 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:02:27,560 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2019-12-07 14:02:27,560 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:02:27,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:02:27,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1101448812, now seen corresponding path program 1 times [2019-12-07 14:02:27,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:02:27,561 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466626853] [2019-12-07 14:02:27,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:02:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:02:27,615 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 14:02:27,615 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466626853] [2019-12-07 14:02:27,615 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777646266] [2019-12-07 14:02:27,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/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 [2019-12-07 14:02:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:02:27,666 INFO L264 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 14:02:27,670 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:02:27,706 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-12-07 14:02:27,706 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:02:27,733 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-12-07 14:02:27,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-12-07 14:02:27,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 9 [2019-12-07 14:02:27,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550954817] [2019-12-07 14:02:27,734 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 14:02:27,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:02:27,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 14:02:27,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-12-07 14:02:27,735 INFO L87 Difference]: Start difference. First operand 111 states and 154 transitions. Second operand 6 states. [2019-12-07 14:02:27,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:02:27,945 INFO L93 Difference]: Finished difference Result 312 states and 467 transitions. [2019-12-07 14:02:27,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 14:02:27,945 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2019-12-07 14:02:27,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:02:27,946 INFO L225 Difference]: With dead ends: 312 [2019-12-07 14:02:27,947 INFO L226 Difference]: Without dead ends: 203 [2019-12-07 14:02:27,947 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-12-07 14:02:27,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2019-12-07 14:02:27,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 186. [2019-12-07 14:02:27,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2019-12-07 14:02:27,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 255 transitions. [2019-12-07 14:02:27,956 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 255 transitions. Word has length 52 [2019-12-07 14:02:27,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:02:27,956 INFO L462 AbstractCegarLoop]: Abstraction has 186 states and 255 transitions. [2019-12-07 14:02:27,956 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 14:02:27,956 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 255 transitions. [2019-12-07 14:02:27,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-12-07 14:02:27,958 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:02:27,958 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 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, 1, 1, 1, 1] [2019-12-07 14:02:28,158 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:02:28,159 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:02:28,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:02:28,159 INFO L82 PathProgramCache]: Analyzing trace with hash 202841432, now seen corresponding path program 1 times [2019-12-07 14:02:28,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:02:28,160 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663049876] [2019-12-07 14:02:28,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:02:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:02:28,210 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-12-07 14:02:28,210 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663049876] [2019-12-07 14:02:28,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:02:28,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 14:02:28,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795666597] [2019-12-07 14:02:28,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:02:28,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:02:28,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:02:28,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:28,211 INFO L87 Difference]: Start difference. First operand 186 states and 255 transitions. Second operand 3 states. [2019-12-07 14:02:28,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:02:28,282 INFO L93 Difference]: Finished difference Result 390 states and 543 transitions. [2019-12-07 14:02:28,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:02:28,283 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-12-07 14:02:28,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:02:28,284 INFO L225 Difference]: With dead ends: 390 [2019-12-07 14:02:28,284 INFO L226 Difference]: Without dead ends: 207 [2019-12-07 14:02:28,285 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:28,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2019-12-07 14:02:28,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2019-12-07 14:02:28,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2019-12-07 14:02:28,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 277 transitions. [2019-12-07 14:02:28,297 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 277 transitions. Word has length 67 [2019-12-07 14:02:28,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:02:28,297 INFO L462 AbstractCegarLoop]: Abstraction has 205 states and 277 transitions. [2019-12-07 14:02:28,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:02:28,297 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 277 transitions. [2019-12-07 14:02:28,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-12-07 14:02:28,299 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:02:28,299 INFO L410 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] [2019-12-07 14:02:28,299 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:02:28,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:02:28,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1689367371, now seen corresponding path program 1 times [2019-12-07 14:02:28,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:02:28,300 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508254019] [2019-12-07 14:02:28,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:02:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:02:28,375 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-12-07 14:02:28,376 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508254019] [2019-12-07 14:02:28,376 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627205842] [2019-12-07 14:02:28,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:02:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:02:28,427 INFO L264 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 14:02:28,430 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:02:28,443 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-12-07 14:02:28,443 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:02:28,480 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-12-07 14:02:28,480 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [993435339] [2019-12-07 14:02:28,497 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2019-12-07 14:02:28,497 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 14:02:28,501 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 14:02:28,505 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 14:02:28,505 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 14:02:30,678 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 14:02:30,944 WARN L192 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 112 [2019-12-07 14:02:31,166 WARN L192 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 108 [2019-12-07 14:02:31,409 WARN L192 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 111 [2019-12-07 14:02:31,657 WARN L192 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 113 [2019-12-07 14:02:31,932 WARN L192 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 116 [2019-12-07 14:02:32,275 WARN L192 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 125 [2019-12-07 14:02:32,582 WARN L192 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 128 [2019-12-07 14:02:32,914 WARN L192 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 130 [2019-12-07 14:02:33,236 WARN L192 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 115 [2019-12-07 14:02:33,544 WARN L192 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 117 [2019-12-07 14:02:34,172 WARN L192 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 111 [2019-12-07 14:02:34,630 WARN L192 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 119 [2019-12-07 14:02:35,319 WARN L192 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 114 [2019-12-07 14:02:35,766 WARN L192 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 117 [2019-12-07 14:02:36,101 WARN L192 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 118 [2019-12-07 14:02:36,442 WARN L192 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 121 [2019-12-07 14:02:36,966 WARN L192 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 114 [2019-12-07 14:02:37,297 WARN L192 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 117 [2019-12-07 14:02:37,602 WARN L192 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 111 [2019-12-07 14:02:37,911 WARN L192 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 117 [2019-12-07 14:02:38,496 WARN L192 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2019-12-07 14:02:38,938 WARN L192 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 123 [2019-12-07 14:02:39,352 WARN L192 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 111 [2019-12-07 14:02:39,713 WARN L192 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 115 [2019-12-07 14:02:40,138 WARN L192 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 119 [2019-12-07 14:02:40,894 WARN L192 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 126 [2019-12-07 14:02:41,279 WARN L192 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 129 [2019-12-07 14:02:41,665 WARN L192 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 111 [2019-12-07 14:02:41,998 WARN L192 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 111 [2019-12-07 14:02:42,000 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 14:02:42,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 14:02:42,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 3] total 8 [2019-12-07 14:02:42,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914470145] [2019-12-07 14:02:42,001 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 14:02:42,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:02:42,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 14:02:42,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1202, Unknown=0, NotChecked=0, Total=1406 [2019-12-07 14:02:42,001 INFO L87 Difference]: Start difference. First operand 205 states and 277 transitions. Second operand 9 states. [2019-12-07 14:02:42,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:02:42,070 INFO L93 Difference]: Finished difference Result 833 states and 1127 transitions. [2019-12-07 14:02:42,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 14:02:42,070 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 85 [2019-12-07 14:02:42,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:02:42,074 INFO L225 Difference]: With dead ends: 833 [2019-12-07 14:02:42,075 INFO L226 Difference]: Without dead ends: 831 [2019-12-07 14:02:42,075 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 195 SyntacticMatches, 27 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=217, Invalid=1265, Unknown=0, NotChecked=0, Total=1482 [2019-12-07 14:02:42,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2019-12-07 14:02:42,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 566. [2019-12-07 14:02:42,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2019-12-07 14:02:42,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 775 transitions. [2019-12-07 14:02:42,093 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 775 transitions. Word has length 85 [2019-12-07 14:02:42,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:02:42,094 INFO L462 AbstractCegarLoop]: Abstraction has 566 states and 775 transitions. [2019-12-07 14:02:42,094 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 14:02:42,094 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 775 transitions. [2019-12-07 14:02:42,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-12-07 14:02:42,098 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:02:42,098 INFO L410 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 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] [2019-12-07 14:02:42,299 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:02:42,299 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:02:42,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:02:42,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1520076341, now seen corresponding path program 1 times [2019-12-07 14:02:42,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:02:42,299 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087830305] [2019-12-07 14:02:42,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:02:42,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:02:42,350 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 275 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2019-12-07 14:02:42,351 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087830305] [2019-12-07 14:02:42,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:02:42,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 14:02:42,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753162117] [2019-12-07 14:02:42,351 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:02:42,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:02:42,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:02:42,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:42,352 INFO L87 Difference]: Start difference. First operand 566 states and 775 transitions. Second operand 3 states. [2019-12-07 14:02:42,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:02:42,449 INFO L93 Difference]: Finished difference Result 1260 states and 1782 transitions. [2019-12-07 14:02:42,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:02:42,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2019-12-07 14:02:42,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:02:42,453 INFO L225 Difference]: With dead ends: 1260 [2019-12-07 14:02:42,453 INFO L226 Difference]: Without dead ends: 694 [2019-12-07 14:02:42,454 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:42,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2019-12-07 14:02:42,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 629. [2019-12-07 14:02:42,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-12-07 14:02:42,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 859 transitions. [2019-12-07 14:02:42,466 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 859 transitions. Word has length 143 [2019-12-07 14:02:42,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:02:42,466 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 859 transitions. [2019-12-07 14:02:42,466 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:02:42,466 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 859 transitions. [2019-12-07 14:02:42,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-12-07 14:02:42,468 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:02:42,468 INFO L410 BasicCegarLoop]: trace histogram [11, 10, 10, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:02:42,468 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:02:42,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:02:42,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1928486761, now seen corresponding path program 2 times [2019-12-07 14:02:42,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:02:42,469 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268600984] [2019-12-07 14:02:42,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:02:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:02:42,511 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 282 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2019-12-07 14:02:42,511 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268600984] [2019-12-07 14:02:42,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:02:42,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 14:02:42,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171535266] [2019-12-07 14:02:42,512 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:02:42,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:02:42,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:02:42,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:42,513 INFO L87 Difference]: Start difference. First operand 629 states and 859 transitions. Second operand 3 states. [2019-12-07 14:02:42,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:02:42,613 INFO L93 Difference]: Finished difference Result 1447 states and 2059 transitions. [2019-12-07 14:02:42,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:02:42,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 152 [2019-12-07 14:02:42,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:02:42,616 INFO L225 Difference]: With dead ends: 1447 [2019-12-07 14:02:42,617 INFO L226 Difference]: Without dead ends: 770 [2019-12-07 14:02:42,617 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:42,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2019-12-07 14:02:42,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 743. [2019-12-07 14:02:42,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2019-12-07 14:02:42,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1003 transitions. [2019-12-07 14:02:42,630 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1003 transitions. Word has length 152 [2019-12-07 14:02:42,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:02:42,630 INFO L462 AbstractCegarLoop]: Abstraction has 743 states and 1003 transitions. [2019-12-07 14:02:42,630 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:02:42,630 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1003 transitions. [2019-12-07 14:02:42,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-12-07 14:02:42,631 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:02:42,632 INFO L410 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:02:42,632 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:02:42,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:02:42,632 INFO L82 PathProgramCache]: Analyzing trace with hash 159972636, now seen corresponding path program 1 times [2019-12-07 14:02:42,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:02:42,632 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2860617] [2019-12-07 14:02:42,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:02:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:02:42,692 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 376 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2019-12-07 14:02:42,692 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2860617] [2019-12-07 14:02:42,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:02:42,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 14:02:42,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999571157] [2019-12-07 14:02:42,693 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:02:42,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:02:42,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:02:42,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:42,693 INFO L87 Difference]: Start difference. First operand 743 states and 1003 transitions. Second operand 3 states. [2019-12-07 14:02:42,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:02:42,712 INFO L93 Difference]: Finished difference Result 1225 states and 1656 transitions. [2019-12-07 14:02:42,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:02:42,712 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2019-12-07 14:02:42,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:02:42,715 INFO L225 Difference]: With dead ends: 1225 [2019-12-07 14:02:42,715 INFO L226 Difference]: Without dead ends: 743 [2019-12-07 14:02:42,716 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:42,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2019-12-07 14:02:42,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 743. [2019-12-07 14:02:42,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2019-12-07 14:02:42,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1001 transitions. [2019-12-07 14:02:42,729 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1001 transitions. Word has length 163 [2019-12-07 14:02:42,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:02:42,730 INFO L462 AbstractCegarLoop]: Abstraction has 743 states and 1001 transitions. [2019-12-07 14:02:42,730 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:02:42,730 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1001 transitions. [2019-12-07 14:02:42,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-12-07 14:02:42,731 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:02:42,731 INFO L410 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:02:42,731 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:02:42,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:02:42,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1059324740, now seen corresponding path program 1 times [2019-12-07 14:02:42,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:02:42,732 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674685603] [2019-12-07 14:02:42,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:02:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:02:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:02:42,827 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 14:02:42,827 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 14:02:42,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 02:02:42 BoogieIcfgContainer [2019-12-07 14:02:42,879 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 14:02:42,880 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:02:42,880 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:02:42,880 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:02:42,880 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:02:26" (3/4) ... [2019-12-07 14:02:42,882 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 14:02:42,882 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:02:42,883 INFO L168 Benchmark]: Toolchain (without parser) took 16908.24 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 489.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -119.0 MB). Peak memory consumption was 370.7 MB. Max. memory is 11.5 GB. [2019-12-07 14:02:42,884 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:02:42,884 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.42 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -140.6 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-12-07 14:02:42,884 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-12-07 14:02:42,885 INFO L168 Benchmark]: Boogie Preprocessor took 23.75 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:02:42,885 INFO L168 Benchmark]: RCFGBuilder took 602.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 990.3 MB in the end (delta: 93.6 MB). Peak memory consumption was 93.6 MB. Max. memory is 11.5 GB. [2019-12-07 14:02:42,885 INFO L168 Benchmark]: TraceAbstraction took 15986.09 ms. Allocated memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: 393.7 MB). Free memory was 990.3 MB in the beginning and 1.1 GB in the end (delta: -73.4 MB). Peak memory consumption was 320.3 MB. Max. memory is 11.5 GB. [2019-12-07 14:02:42,886 INFO L168 Benchmark]: Witness Printer took 2.89 ms. Allocated memory is still 1.5 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:02:42,887 INFO L335 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 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 250.42 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -140.6 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.75 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 602.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 990.3 MB in the end (delta: 93.6 MB). Peak memory consumption was 93.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 15986.09 ms. Allocated memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: 393.7 MB). Free memory was 990.3 MB in the beginning and 1.1 GB in the end (delta: -73.4 MB). Peak memory consumption was 320.3 MB. Max. memory is 11.5 GB. * Witness Printer took 2.89 ms. Allocated memory is still 1.5 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 607]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseXor at line 355. Possible FailurePath: [L616] int __retres1 ; [L9] int s__info_callback = __VERIFIER_nondet_int(); [L10] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L11] int s__state ; [L12] int s__new_session ; [L13] int s__server ; [L14] unsigned int s__version = __VERIFIER_nondet_uint(); [L15] int s__type ; [L16] int s__init_num ; [L17] int s__bbio = __VERIFIER_nondet_int(); [L18] int s__wbio = __VERIFIER_nondet_int(); [L19] int s__hit = __VERIFIER_nondet_int(); [L20] int s__rwstate ; [L21] int s__init_buf___0 ; [L22] int s__debug = __VERIFIER_nondet_int(); [L23] int s__shutdown ; [L24] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L25] unsigned int s__ctx__stats__sess_connect_renegotiate ; [L26] unsigned int s__ctx__stats__sess_connect ; [L27] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L28] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L29] int s__s3__change_cipher_spec ; [L30] int s__s3__flags ; [L31] int s__s3__delay_buf_pop_ret ; [L32] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L33] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L34] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__next_state___0 ; [L38] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L39] int s__session__cipher ; [L40] int s__session__compress_meth ; [L41] int buf ; [L42] unsigned long tmp ; [L43] unsigned long l ; [L44] int num1 ; [L45] int cb ; [L46] int ret ; [L47] int new_state ; [L48] int state ; [L49] int skip ; [L50] int tmp___0 ; [L51] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L52] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L53] int tmp___3 = __VERIFIER_nondet_int(); [L54] int tmp___4 = __VERIFIER_nondet_int(); [L55] int tmp___5 = __VERIFIER_nondet_int(); [L56] int tmp___6 = __VERIFIER_nondet_int(); [L57] int tmp___7 = __VERIFIER_nondet_int(); [L58] int tmp___8 = __VERIFIER_nondet_int(); [L59] int tmp___9 = __VERIFIER_nondet_int(); [L60] int blastFlag ; [L61] int ag_X ; [L62] int ag_Y = __VERIFIER_nondet_int(); [L63] int __retres59 ; [L66] s__state = 12292 [L67] blastFlag = 0 [L68] tmp = __VERIFIER_nondet_int() [L69] cb = 0 [L70] ret = -1 [L71] skip = 0 [L72] tmp___0 = 0 [L73] COND TRUE s__info_callback != 0 [L74] cb = s__info_callback [L82] s__in_handshake = s__in_handshake + 1 [L83] COND FALSE !(tmp___1 - 12288) [L93] COND TRUE 1 [L95] state = s__state [L96] COND TRUE s__state == 12292 [L199] s__new_session = 1 [L200] s__state = 4096 [L201] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L206] s__server = 0 [L207] COND TRUE cb != 0 [L212] COND FALSE !(s__version - 65280 != 768) [L218] s__type = 4096 [L219] COND FALSE !(s__init_buf___0 == 0) [L237] COND FALSE !(! tmp___4) [L243] COND FALSE !(! tmp___5) [L249] s__state = 4368 [L250] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L251] s__init_num = 0 [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND TRUE s__state == 4368 [L255] s__shutdown = 0 [L256] ret = __VERIFIER_nondet_int() [L257] COND TRUE blastFlag == 0 [L258] blastFlag = 1 [L266] COND FALSE !(ret <= 0) [L271] s__state = 4384 [L272] s__init_num = 0 [L273] COND TRUE s__bbio != s__wbio [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND TRUE s__state == 4384 [L281] ret = __VERIFIER_nondet_int() [L282] COND TRUE blastFlag == 1 [L283] blastFlag = 2 [L287] COND FALSE !(ret <= 0) [L292] COND FALSE !(\read(s__hit)) [L295] s__state = 4400 [L297] s__init_num = 0 [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND FALSE !(s__state == 4384) [L120] COND FALSE !(s__state == 4385) [L123] COND TRUE s__state == 4400 [L301] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L304] ret = __VERIFIER_nondet_int() [L305] COND TRUE blastFlag == 2 [L306] blastFlag = 3 [L310] COND FALSE !(ret <= 0) [L316] s__state = 4416 [L317] s__init_num = 0 [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND FALSE !(s__state == 4384) [L120] COND FALSE !(s__state == 4385) [L123] COND FALSE !(s__state == 4400) [L126] COND FALSE !(s__state == 4401) [L129] COND TRUE s__state == 4416 [L321] ret = __VERIFIER_nondet_int() [L322] COND TRUE blastFlag == 3 [L323] blastFlag = 4 [L327] COND FALSE !(ret <= 0) [L332] s__state = 4432 [L333] ag_X = (unsigned short)65535 [L334] s__init_num = 0 [L335] COND FALSE !(! tmp___6) [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND FALSE !(s__state == 4384) [L120] COND FALSE !(s__state == 4385) [L123] COND FALSE !(s__state == 4400) [L126] COND FALSE !(s__state == 4401) [L129] COND FALSE !(s__state == 4416) [L132] COND FALSE !(s__state == 4417) [L135] COND TRUE s__state == 4432 [L344] ret = __VERIFIER_nondet_int() [L345] COND FALSE !(blastFlag == 5) [L350] COND FALSE !(ret <= 0) [L355] s__state = ag_X ^ ag_Y [L356] s__init_num = 0 [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND TRUE s__state == 4368 [L255] s__shutdown = 0 [L256] ret = __VERIFIER_nondet_int() [L257] COND FALSE !(blastFlag == 0) [L260] COND TRUE blastFlag == 4 [L261] blastFlag = 5 [L266] COND FALSE !(ret <= 0) [L271] s__state = 4384 [L272] s__init_num = 0 [L273] COND TRUE s__bbio != s__wbio [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND TRUE s__state == 4384 [L281] ret = __VERIFIER_nondet_int() [L282] COND FALSE !(blastFlag == 1) [L287] COND FALSE !(ret <= 0) [L292] COND FALSE !(\read(s__hit)) [L295] s__state = 4400 [L297] s__init_num = 0 [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND FALSE !(s__state == 4384) [L120] COND FALSE !(s__state == 4385) [L123] COND TRUE s__state == 4400 [L301] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L304] ret = __VERIFIER_nondet_int() [L305] COND FALSE !(blastFlag == 2) [L310] COND FALSE !(ret <= 0) [L316] s__state = 4416 [L317] s__init_num = 0 [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND FALSE !(s__state == 4384) [L120] COND FALSE !(s__state == 4385) [L123] COND FALSE !(s__state == 4400) [L126] COND FALSE !(s__state == 4401) [L129] COND TRUE s__state == 4416 [L321] ret = __VERIFIER_nondet_int() [L322] COND FALSE !(blastFlag == 3) [L327] COND FALSE !(ret <= 0) [L332] s__state = 4432 [L333] ag_X = (unsigned short)65535 [L334] s__init_num = 0 [L335] COND FALSE !(! tmp___6) [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND FALSE !(s__state == 4384) [L120] COND FALSE !(s__state == 4385) [L123] COND FALSE !(s__state == 4400) [L126] COND FALSE !(s__state == 4401) [L129] COND FALSE !(s__state == 4416) [L132] COND FALSE !(s__state == 4417) [L135] COND TRUE s__state == 4432 [L344] ret = __VERIFIER_nondet_int() [L345] COND TRUE blastFlag == 5 [L607] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 84 locations, 1 error locations. Result: UNSAFE, OverallTime: 15.8s, OverallIterations: 10, TraceHistogramMax: 11, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1223 SDtfs, 861 SDslu, 1214 SDs, 0 SdLazy, 898 SolverSat, 219 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 385 GetRequests, 307 SyntacticMatches, 27 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 11.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=743occurred in iteration=8, 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, 9 MinimizatonAttempts, 380 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 1049 NumberOfCodeBlocks, 1049 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1009 ConstructedInterpolants, 0 QuantifiedInterpolants, 308933 SizeOfPredicates, 4 NumberOfNonLiveVariables, 362 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 13 InterpolantComputations, 9 PerfectInterpolantSequences, 1708/1967 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 14:02:44,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:02:44,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:02:44,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:02:44,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:02:44,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:02:44,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:02:44,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:02:44,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:02:44,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:02:44,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:02:44,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:02:44,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:02:44,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:02:44,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:02:44,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:02:44,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:02:44,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:02:44,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:02:44,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:02:44,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:02:44,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:02:44,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:02:44,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:02:44,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:02:44,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:02:44,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:02:44,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:02:44,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:02:44,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:02:44,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:02:44,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:02:44,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:02:44,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:02:44,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:02:44,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:02:44,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:02:44,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:02:44,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:02:44,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:02:44,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:02:44,294 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 14:02:44,304 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:02:44,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:02:44,305 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 14:02:44,305 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 14:02:44,305 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 14:02:44,305 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 14:02:44,305 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 14:02:44,305 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 14:02:44,306 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 14:02:44,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:02:44,306 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 14:02:44,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 14:02:44,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:02:44,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 14:02:44,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 14:02:44,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 14:02:44,307 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 14:02:44,307 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 14:02:44,307 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 14:02:44,307 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 14:02:44,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:02:44,308 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:02:44,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 14:02:44,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:02:44,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 14:02:44,308 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 14:02:44,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 14:02:44,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:02:44,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:02:44,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 14:02:44,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 14:02:44,309 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 14:02:44,309 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 14:02:44,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 14:02:44,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:02:44,310 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 14:02:44,310 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_8325cbc7-9d7f-487a-92eb-0a3bf6212773/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(__VERIFIER_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 -> 425afc8b22e60c0a2f2550983f32b043f3f437d4 [2019-12-07 14:02:44,478 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:02:44,486 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:02:44,488 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:02:44,489 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:02:44,490 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:02:44,490 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c [2019-12-07 14:02:44,528 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/data/2090348d0/50ac436887134b028c9d0e1e3a47ee52/FLAG47f58b7f8 [2019-12-07 14:02:44,975 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:02:44,975 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c [2019-12-07 14:02:44,982 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/data/2090348d0/50ac436887134b028c9d0e1e3a47ee52/FLAG47f58b7f8 [2019-12-07 14:02:44,991 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/data/2090348d0/50ac436887134b028c9d0e1e3a47ee52 [2019-12-07 14:02:44,993 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:02:44,994 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:02:44,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:02:44,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:02:44,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:02:44,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:02:44" (1/1) ... [2019-12-07 14:02:44,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41944eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:02:44, skipping insertion in model container [2019-12-07 14:02:45,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:02:44" (1/1) ... [2019-12-07 14:02:45,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:02:45,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:02:45,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:02:45,168 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:02:45,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:02:45,245 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:02:45,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:02:45 WrapperNode [2019-12-07 14:02:45,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:02:45,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:02:45,247 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:02:45,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:02:45,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:02:45" (1/1) ... [2019-12-07 14:02:45,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:02:45" (1/1) ... [2019-12-07 14:02:45,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:02:45,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:02:45,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:02:45,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:02:45,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:02:45" (1/1) ... [2019-12-07 14:02:45,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:02:45" (1/1) ... [2019-12-07 14:02:45,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:02:45" (1/1) ... [2019-12-07 14:02:45,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:02:45" (1/1) ... [2019-12-07 14:02:45,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:02:45" (1/1) ... [2019-12-07 14:02:45,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:02:45" (1/1) ... [2019-12-07 14:02:45,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:02:45" (1/1) ... [2019-12-07 14:02:45,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:02:45,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:02:45,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:02:45,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:02:45,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:02:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/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 [2019-12-07 14:02:45,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:02:45,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:02:45,433 WARN L738 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-12-07 14:02:45,718 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2019-12-07 14:02:45,718 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2019-12-07 14:02:45,719 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:02:45,719 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 14:02:45,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:02:45 BoogieIcfgContainer [2019-12-07 14:02:45,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:02:45,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 14:02:45,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 14:02:45,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 14:02:45,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 02:02:44" (1/3) ... [2019-12-07 14:02:45,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4072a4df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:02:45, skipping insertion in model container [2019-12-07 14:02:45,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:02:45" (2/3) ... [2019-12-07 14:02:45,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4072a4df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:02:45, skipping insertion in model container [2019-12-07 14:02:45,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:02:45" (3/3) ... [2019-12-07 14:02:45,724 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.BV.c.cil-2a.c [2019-12-07 14:02:45,731 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 14:02:45,735 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 14:02:45,743 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 14:02:45,759 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 14:02:45,759 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 14:02:45,759 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 14:02:45,759 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:02:45,759 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:02:45,759 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 14:02:45,759 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:02:45,759 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 14:02:45,771 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states. [2019-12-07 14:02:45,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-07 14:02:45,776 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:02:45,776 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:02:45,777 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:02:45,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:02:45,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1449578949, now seen corresponding path program 1 times [2019-12-07 14:02:45,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 14:02:45,789 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935190147] [2019-12-07 14:02:45,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-07 14:02:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:02:45,846 INFO L264 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:02:45,850 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:02:45,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:02:45,879 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:02:45,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:02:45,886 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935190147] [2019-12-07 14:02:45,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:02:45,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 14:02:45,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052827158] [2019-12-07 14:02:45,892 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:02:45,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 14:02:45,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:02:45,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:45,902 INFO L87 Difference]: Start difference. First operand 124 states. Second operand 3 states. [2019-12-07 14:02:46,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:02:46,033 INFO L93 Difference]: Finished difference Result 245 states and 420 transitions. [2019-12-07 14:02:46,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:02:46,034 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-12-07 14:02:46,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:02:46,043 INFO L225 Difference]: With dead ends: 245 [2019-12-07 14:02:46,044 INFO L226 Difference]: Without dead ends: 111 [2019-12-07 14:02:46,046 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:46,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2019-12-07 14:02:46,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2019-12-07 14:02:46,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-12-07 14:02:46,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 168 transitions. [2019-12-07 14:02:46,082 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 168 transitions. Word has length 23 [2019-12-07 14:02:46,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:02:46,082 INFO L462 AbstractCegarLoop]: Abstraction has 111 states and 168 transitions. [2019-12-07 14:02:46,082 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:02:46,082 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 168 transitions. [2019-12-07 14:02:46,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-12-07 14:02:46,084 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:02:46,084 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:02:46,284 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 14:02:46,285 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:02:46,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:02:46,286 INFO L82 PathProgramCache]: Analyzing trace with hash 800883515, now seen corresponding path program 1 times [2019-12-07 14:02:46,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 14:02:46,287 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804831370] [2019-12-07 14:02:46,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-12-07 14:02:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:02:46,361 INFO L264 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:02:46,363 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:02:46,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:02:46,370 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:02:46,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:02:46,375 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804831370] [2019-12-07 14:02:46,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:02:46,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-12-07 14:02:46,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098283189] [2019-12-07 14:02:46,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:02:46,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 14:02:46,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:02:46,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:46,377 INFO L87 Difference]: Start difference. First operand 111 states and 168 transitions. Second operand 3 states. [2019-12-07 14:02:46,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:02:46,477 INFO L93 Difference]: Finished difference Result 232 states and 355 transitions. [2019-12-07 14:02:46,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:02:46,477 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2019-12-07 14:02:46,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:02:46,478 INFO L225 Difference]: With dead ends: 232 [2019-12-07 14:02:46,478 INFO L226 Difference]: Without dead ends: 130 [2019-12-07 14:02:46,479 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:46,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-12-07 14:02:46,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2019-12-07 14:02:46,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2019-12-07 14:02:46,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 188 transitions. [2019-12-07 14:02:46,487 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 188 transitions. Word has length 35 [2019-12-07 14:02:46,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:02:46,487 INFO L462 AbstractCegarLoop]: Abstraction has 126 states and 188 transitions. [2019-12-07 14:02:46,488 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:02:46,488 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 188 transitions. [2019-12-07 14:02:46,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-12-07 14:02:46,489 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:02:46,489 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:02:46,690 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 14:02:46,690 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:02:46,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:02:46,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1711238340, now seen corresponding path program 1 times [2019-12-07 14:02:46,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 14:02:46,692 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137348064] [2019-12-07 14:02:46,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-12-07 14:02:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:02:46,765 INFO L264 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:02:46,767 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:02:46,777 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 14:02:46,777 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:02:46,783 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 14:02:46,783 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137348064] [2019-12-07 14:02:46,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:02:46,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-12-07 14:02:46,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019384234] [2019-12-07 14:02:46,785 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:02:46,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 14:02:46,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:02:46,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:46,785 INFO L87 Difference]: Start difference. First operand 126 states and 188 transitions. Second operand 3 states. [2019-12-07 14:02:46,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:02:46,880 INFO L93 Difference]: Finished difference Result 264 states and 399 transitions. [2019-12-07 14:02:46,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:02:46,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2019-12-07 14:02:46,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:02:46,881 INFO L225 Difference]: With dead ends: 264 [2019-12-07 14:02:46,881 INFO L226 Difference]: Without dead ends: 147 [2019-12-07 14:02:46,882 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:46,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-12-07 14:02:46,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 143. [2019-12-07 14:02:46,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2019-12-07 14:02:46,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 210 transitions. [2019-12-07 14:02:46,890 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 210 transitions. Word has length 49 [2019-12-07 14:02:46,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:02:46,890 INFO L462 AbstractCegarLoop]: Abstraction has 143 states and 210 transitions. [2019-12-07 14:02:46,890 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:02:46,890 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 210 transitions. [2019-12-07 14:02:46,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-12-07 14:02:46,892 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:02:46,892 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2019-12-07 14:02:47,092 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 14:02:47,093 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:02:47,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:02:47,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1841896084, now seen corresponding path program 1 times [2019-12-07 14:02:47,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 14:02:47,094 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994818730] [2019-12-07 14:02:47,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-12-07 14:02:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:02:47,167 INFO L264 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:02:47,169 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:02:47,180 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 14:02:47,181 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:02:47,187 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 14:02:47,188 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994818730] [2019-12-07 14:02:47,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:02:47,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-12-07 14:02:47,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149844301] [2019-12-07 14:02:47,189 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:02:47,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 14:02:47,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:02:47,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:47,189 INFO L87 Difference]: Start difference. First operand 143 states and 210 transitions. Second operand 3 states. [2019-12-07 14:02:47,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:02:47,212 INFO L93 Difference]: Finished difference Result 298 states and 435 transitions. [2019-12-07 14:02:47,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:02:47,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2019-12-07 14:02:47,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:02:47,214 INFO L225 Difference]: With dead ends: 298 [2019-12-07 14:02:47,214 INFO L226 Difference]: Without dead ends: 164 [2019-12-07 14:02:47,215 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:47,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-12-07 14:02:47,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2019-12-07 14:02:47,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2019-12-07 14:02:47,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 237 transitions. [2019-12-07 14:02:47,226 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 237 transitions. Word has length 66 [2019-12-07 14:02:47,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:02:47,226 INFO L462 AbstractCegarLoop]: Abstraction has 164 states and 237 transitions. [2019-12-07 14:02:47,226 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:02:47,227 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 237 transitions. [2019-12-07 14:02:47,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-12-07 14:02:47,228 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:02:47,228 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2019-12-07 14:02:47,429 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 14:02:47,429 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:02:47,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:02:47,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1982444694, now seen corresponding path program 1 times [2019-12-07 14:02:47,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 14:02:47,430 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285454208] [2019-12-07 14:02:47,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-12-07 14:02:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:02:47,487 INFO L264 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:02:47,489 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:02:47,499 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-12-07 14:02:47,499 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:02:47,510 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-12-07 14:02:47,511 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285454208] [2019-12-07 14:02:47,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:02:47,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-12-07 14:02:47,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62399789] [2019-12-07 14:02:47,512 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 14:02:47,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 14:02:47,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 14:02:47,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:02:47,513 INFO L87 Difference]: Start difference. First operand 164 states and 237 transitions. Second operand 4 states. [2019-12-07 14:02:47,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:02:47,705 INFO L93 Difference]: Finished difference Result 390 states and 587 transitions. [2019-12-07 14:02:47,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 14:02:47,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2019-12-07 14:02:47,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:02:47,708 INFO L225 Difference]: With dead ends: 390 [2019-12-07 14:02:47,708 INFO L226 Difference]: Without dead ends: 235 [2019-12-07 14:02:47,708 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:02:47,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2019-12-07 14:02:47,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 227. [2019-12-07 14:02:47,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2019-12-07 14:02:47,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 323 transitions. [2019-12-07 14:02:47,719 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 323 transitions. Word has length 66 [2019-12-07 14:02:47,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:02:47,719 INFO L462 AbstractCegarLoop]: Abstraction has 227 states and 323 transitions. [2019-12-07 14:02:47,719 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 14:02:47,719 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 323 transitions. [2019-12-07 14:02:47,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-12-07 14:02:47,721 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:02:47,721 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:02:47,922 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-12-07 14:02:47,922 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:02:47,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:02:47,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1464883036, now seen corresponding path program 1 times [2019-12-07 14:02:47,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 14:02:47,923 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819275420] [2019-12-07 14:02:47,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-12-07 14:02:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:02:47,980 INFO L264 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:02:47,982 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:02:47,991 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-12-07 14:02:47,992 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:02:47,997 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-12-07 14:02:47,997 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819275420] [2019-12-07 14:02:47,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:02:47,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-12-07 14:02:47,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342361430] [2019-12-07 14:02:47,998 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:02:47,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 14:02:47,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:02:47,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:47,999 INFO L87 Difference]: Start difference. First operand 227 states and 323 transitions. Second operand 3 states. [2019-12-07 14:02:48,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:02:48,091 INFO L93 Difference]: Finished difference Result 468 states and 673 transitions. [2019-12-07 14:02:48,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:02:48,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-12-07 14:02:48,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:02:48,093 INFO L225 Difference]: With dead ends: 468 [2019-12-07 14:02:48,093 INFO L226 Difference]: Without dead ends: 250 [2019-12-07 14:02:48,093 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:48,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2019-12-07 14:02:48,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 246. [2019-12-07 14:02:48,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2019-12-07 14:02:48,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 347 transitions. [2019-12-07 14:02:48,102 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 347 transitions. Word has length 67 [2019-12-07 14:02:48,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:02:48,103 INFO L462 AbstractCegarLoop]: Abstraction has 246 states and 347 transitions. [2019-12-07 14:02:48,103 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:02:48,103 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 347 transitions. [2019-12-07 14:02:48,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-12-07 14:02:48,104 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:02:48,104 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:02:48,305 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-12-07 14:02:48,305 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:02:48,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:02:48,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1271135886, now seen corresponding path program 1 times [2019-12-07 14:02:48,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 14:02:48,307 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136280589] [2019-12-07 14:02:48,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-12-07 14:02:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:02:48,375 INFO L264 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:02:48,377 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:02:48,387 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-12-07 14:02:48,387 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:02:48,392 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-12-07 14:02:48,393 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136280589] [2019-12-07 14:02:48,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:02:48,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-12-07 14:02:48,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13012386] [2019-12-07 14:02:48,393 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:02:48,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 14:02:48,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:02:48,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:48,394 INFO L87 Difference]: Start difference. First operand 246 states and 347 transitions. Second operand 3 states. [2019-12-07 14:02:48,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:02:48,476 INFO L93 Difference]: Finished difference Result 507 states and 723 transitions. [2019-12-07 14:02:48,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:02:48,476 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2019-12-07 14:02:48,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:02:48,478 INFO L225 Difference]: With dead ends: 507 [2019-12-07 14:02:48,478 INFO L226 Difference]: Without dead ends: 270 [2019-12-07 14:02:48,478 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:48,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2019-12-07 14:02:48,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 267. [2019-12-07 14:02:48,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2019-12-07 14:02:48,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 373 transitions. [2019-12-07 14:02:48,484 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 373 transitions. Word has length 83 [2019-12-07 14:02:48,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:02:48,485 INFO L462 AbstractCegarLoop]: Abstraction has 267 states and 373 transitions. [2019-12-07 14:02:48,485 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:02:48,485 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 373 transitions. [2019-12-07 14:02:48,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-12-07 14:02:48,486 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:02:48,486 INFO L410 BasicCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:02:48,686 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-12-07 14:02:48,686 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:02:48,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:02:48,687 INFO L82 PathProgramCache]: Analyzing trace with hash -272398982, now seen corresponding path program 1 times [2019-12-07 14:02:48,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 14:02:48,687 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273214389] [2019-12-07 14:02:48,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-12-07 14:02:48,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:02:48,729 INFO L264 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:02:48,731 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:02:48,747 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-12-07 14:02:48,747 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:02:48,760 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-12-07 14:02:48,760 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273214389] [2019-12-07 14:02:48,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:02:48,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-12-07 14:02:48,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472992881] [2019-12-07 14:02:48,761 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 14:02:48,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 14:02:48,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 14:02:48,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:02:48,761 INFO L87 Difference]: Start difference. First operand 267 states and 373 transitions. Second operand 4 states. [2019-12-07 14:02:48,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:02:48,807 INFO L93 Difference]: Finished difference Result 784 states and 1095 transitions. [2019-12-07 14:02:48,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 14:02:48,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2019-12-07 14:02:48,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:02:48,810 INFO L225 Difference]: With dead ends: 784 [2019-12-07 14:02:48,810 INFO L226 Difference]: Without dead ends: 526 [2019-12-07 14:02:48,811 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:02:48,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2019-12-07 14:02:48,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2019-12-07 14:02:48,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2019-12-07 14:02:48,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 728 transitions. [2019-12-07 14:02:48,822 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 728 transitions. Word has length 102 [2019-12-07 14:02:48,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:02:48,822 INFO L462 AbstractCegarLoop]: Abstraction has 526 states and 728 transitions. [2019-12-07 14:02:48,823 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 14:02:48,823 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 728 transitions. [2019-12-07 14:02:48,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-12-07 14:02:48,824 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:02:48,824 INFO L410 BasicCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:02:49,024 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-12-07 14:02:49,025 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:02:49,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:02:49,025 INFO L82 PathProgramCache]: Analyzing trace with hash 302681874, now seen corresponding path program 1 times [2019-12-07 14:02:49,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 14:02:49,026 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1578757727] [2019-12-07 14:02:49,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2019-12-07 14:02:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:02:49,102 INFO L264 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:02:49,103 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:02:49,114 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-12-07 14:02:49,114 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:02:49,126 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-12-07 14:02:49,126 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1578757727] [2019-12-07 14:02:49,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:02:49,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 14:02:49,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448440307] [2019-12-07 14:02:49,127 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:02:49,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 14:02:49,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:02:49,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:49,128 INFO L87 Difference]: Start difference. First operand 526 states and 728 transitions. Second operand 3 states. [2019-12-07 14:02:49,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:02:49,150 INFO L93 Difference]: Finished difference Result 1069 states and 1477 transitions. [2019-12-07 14:02:49,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:02:49,151 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2019-12-07 14:02:49,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:02:49,153 INFO L225 Difference]: With dead ends: 1069 [2019-12-07 14:02:49,154 INFO L226 Difference]: Without dead ends: 552 [2019-12-07 14:02:49,155 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:49,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2019-12-07 14:02:49,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2019-12-07 14:02:49,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2019-12-07 14:02:49,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 761 transitions. [2019-12-07 14:02:49,170 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 761 transitions. Word has length 103 [2019-12-07 14:02:49,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:02:49,171 INFO L462 AbstractCegarLoop]: Abstraction has 552 states and 761 transitions. [2019-12-07 14:02:49,171 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:02:49,171 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 761 transitions. [2019-12-07 14:02:49,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-12-07 14:02:49,172 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:02:49,173 INFO L410 BasicCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:02:49,373 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2019-12-07 14:02:49,373 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:02:49,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:02:49,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1688750428, now seen corresponding path program 1 times [2019-12-07 14:02:49,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 14:02:49,374 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2082236385] [2019-12-07 14:02:49,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2019-12-07 14:02:49,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:02:49,420 INFO L264 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:02:49,422 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:02:49,434 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-12-07 14:02:49,434 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:02:49,448 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-12-07 14:02:49,448 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2082236385] [2019-12-07 14:02:49,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:02:49,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-12-07 14:02:49,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691196042] [2019-12-07 14:02:49,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 14:02:49,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 14:02:49,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 14:02:49,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:02:49,449 INFO L87 Difference]: Start difference. First operand 552 states and 761 transitions. Second operand 4 states. [2019-12-07 14:02:49,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:02:49,507 INFO L93 Difference]: Finished difference Result 1519 states and 2112 transitions. [2019-12-07 14:02:49,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 14:02:49,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2019-12-07 14:02:49,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:02:49,512 INFO L225 Difference]: With dead ends: 1519 [2019-12-07 14:02:49,512 INFO L226 Difference]: Without dead ends: 1002 [2019-12-07 14:02:49,513 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:02:49,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2019-12-07 14:02:49,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 1002. [2019-12-07 14:02:49,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2019-12-07 14:02:49,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1391 transitions. [2019-12-07 14:02:49,532 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1391 transitions. Word has length 104 [2019-12-07 14:02:49,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:02:49,532 INFO L462 AbstractCegarLoop]: Abstraction has 1002 states and 1391 transitions. [2019-12-07 14:02:49,532 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 14:02:49,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1391 transitions. [2019-12-07 14:02:49,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-12-07 14:02:49,534 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:02:49,535 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:02:49,735 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2019-12-07 14:02:49,735 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:02:49,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:02:49,735 INFO L82 PathProgramCache]: Analyzing trace with hash 439361019, now seen corresponding path program 1 times [2019-12-07 14:02:49,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 14:02:49,736 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457004582] [2019-12-07 14:02:49,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2019-12-07 14:02:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:02:49,804 INFO L264 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:02:49,806 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:02:49,845 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2019-12-07 14:02:49,845 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:02:49,887 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2019-12-07 14:02:49,887 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457004582] [2019-12-07 14:02:49,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:02:49,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-12-07 14:02:49,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338635645] [2019-12-07 14:02:49,888 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 14:02:49,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 14:02:49,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 14:02:49,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:02:49,889 INFO L87 Difference]: Start difference. First operand 1002 states and 1391 transitions. Second operand 4 states. [2019-12-07 14:02:50,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:02:50,055 INFO L93 Difference]: Finished difference Result 2090 states and 2937 transitions. [2019-12-07 14:02:50,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 14:02:50,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2019-12-07 14:02:50,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:02:50,061 INFO L225 Difference]: With dead ends: 2090 [2019-12-07 14:02:50,061 INFO L226 Difference]: Without dead ends: 1123 [2019-12-07 14:02:50,063 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:02:50,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2019-12-07 14:02:50,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1094. [2019-12-07 14:02:50,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1094 states. [2019-12-07 14:02:50,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1499 transitions. [2019-12-07 14:02:50,096 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1499 transitions. Word has length 172 [2019-12-07 14:02:50,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:02:50,096 INFO L462 AbstractCegarLoop]: Abstraction has 1094 states and 1499 transitions. [2019-12-07 14:02:50,096 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 14:02:50,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1499 transitions. [2019-12-07 14:02:50,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-12-07 14:02:50,100 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:02:50,100 INFO L410 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:02:50,300 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2019-12-07 14:02:50,301 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:02:50,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:02:50,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1444142562, now seen corresponding path program 1 times [2019-12-07 14:02:50,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 14:02:50,302 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998845822] [2019-12-07 14:02:50,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2019-12-07 14:02:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:02:50,363 INFO L264 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:02:50,365 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:02:50,401 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2019-12-07 14:02:50,401 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:02:50,433 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2019-12-07 14:02:50,434 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998845822] [2019-12-07 14:02:50,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:02:50,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-12-07 14:02:50,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114242347] [2019-12-07 14:02:50,434 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:02:50,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 14:02:50,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:02:50,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:50,435 INFO L87 Difference]: Start difference. First operand 1094 states and 1499 transitions. Second operand 3 states. [2019-12-07 14:02:50,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:02:50,465 INFO L93 Difference]: Finished difference Result 2408 states and 3303 transitions. [2019-12-07 14:02:50,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:02:50,465 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2019-12-07 14:02:50,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:02:50,470 INFO L225 Difference]: With dead ends: 2408 [2019-12-07 14:02:50,470 INFO L226 Difference]: Without dead ends: 1349 [2019-12-07 14:02:50,472 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:02:50,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2019-12-07 14:02:50,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1349. [2019-12-07 14:02:50,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1349 states. [2019-12-07 14:02:50,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1846 transitions. [2019-12-07 14:02:50,500 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1846 transitions. Word has length 193 [2019-12-07 14:02:50,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:02:50,500 INFO L462 AbstractCegarLoop]: Abstraction has 1349 states and 1846 transitions. [2019-12-07 14:02:50,500 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:02:50,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1846 transitions. [2019-12-07 14:02:50,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-12-07 14:02:50,502 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:02:50,502 INFO L410 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:02:50,703 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2019-12-07 14:02:50,703 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:02:50,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:02:50,703 INFO L82 PathProgramCache]: Analyzing trace with hash -403372922, now seen corresponding path program 1 times [2019-12-07 14:02:50,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 14:02:50,704 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [583289778] [2019-12-07 14:02:50,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2019-12-07 14:02:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:02:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:02:50,989 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-12-07 14:02:50,990 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 14:02:51,190 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2019-12-07 14:02:51,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 02:02:51 BoogieIcfgContainer [2019-12-07 14:02:51,260 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 14:02:51,260 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:02:51,260 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:02:51,260 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:02:51,261 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:02:45" (3/4) ... [2019-12-07 14:02:51,262 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 14:02:51,349 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8325cbc7-9d7f-487a-92eb-0a3bf6212773/bin/utaipan/witness.graphml [2019-12-07 14:02:51,349 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:02:51,351 INFO L168 Benchmark]: Toolchain (without parser) took 6356.50 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 305.1 MB). Free memory was 953.7 MB in the beginning and 983.8 MB in the end (delta: -30.1 MB). Peak memory consumption was 275.0 MB. Max. memory is 11.5 GB. [2019-12-07 14:02:51,351 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:02:51,352 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -172.6 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-12-07 14:02:51,352 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.92 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:02:51,352 INFO L168 Benchmark]: Boogie Preprocessor took 28.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:02:51,352 INFO L168 Benchmark]: RCFGBuilder took 407.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 53.0 MB). Peak memory consumption was 53.0 MB. Max. memory is 11.5 GB. [2019-12-07 14:02:51,352 INFO L168 Benchmark]: TraceAbstraction took 5539.48 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 167.8 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 71.9 MB). Peak memory consumption was 239.6 MB. Max. memory is 11.5 GB. [2019-12-07 14:02:51,353 INFO L168 Benchmark]: Witness Printer took 89.36 ms. Allocated memory is still 1.3 GB. Free memory was 1.0 GB in the beginning and 983.8 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2019-12-07 14:02:51,354 INFO L335 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 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 251.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -172.6 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.92 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 407.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 53.0 MB). Peak memory consumption was 53.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5539.48 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 167.8 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 71.9 MB). Peak memory consumption was 239.6 MB. Max. memory is 11.5 GB. * Witness Printer took 89.36 ms. Allocated memory is still 1.3 GB. Free memory was 1.0 GB in the beginning and 983.8 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 607]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L616] int __retres1 ; [L9] int s__info_callback = __VERIFIER_nondet_int(); [L10] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L11] int s__state ; [L12] int s__new_session ; [L13] int s__server ; [L14] unsigned int s__version = __VERIFIER_nondet_uint(); [L15] int s__type ; [L16] int s__init_num ; [L17] int s__bbio = __VERIFIER_nondet_int(); [L18] int s__wbio = __VERIFIER_nondet_int(); [L19] int s__hit = __VERIFIER_nondet_int(); [L20] int s__rwstate ; [L21] int s__init_buf___0 ; [L22] int s__debug = __VERIFIER_nondet_int(); [L23] int s__shutdown ; [L24] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L25] unsigned int s__ctx__stats__sess_connect_renegotiate ; [L26] unsigned int s__ctx__stats__sess_connect ; [L27] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L28] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L29] int s__s3__change_cipher_spec ; [L30] int s__s3__flags ; [L31] int s__s3__delay_buf_pop_ret ; [L32] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L33] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L34] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__next_state___0 ; [L38] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L39] int s__session__cipher ; [L40] int s__session__compress_meth ; [L41] int buf ; [L42] unsigned long tmp ; [L43] unsigned long l ; [L44] int num1 ; [L45] int cb ; [L46] int ret ; [L47] int new_state ; [L48] int state ; [L49] int skip ; [L50] int tmp___0 ; [L51] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L52] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L53] int tmp___3 = __VERIFIER_nondet_int(); [L54] int tmp___4 = __VERIFIER_nondet_int(); [L55] int tmp___5 = __VERIFIER_nondet_int(); [L56] int tmp___6 = __VERIFIER_nondet_int(); [L57] int tmp___7 = __VERIFIER_nondet_int(); [L58] int tmp___8 = __VERIFIER_nondet_int(); [L59] int tmp___9 = __VERIFIER_nondet_int(); [L60] int blastFlag ; [L61] int ag_X ; [L62] int ag_Y = __VERIFIER_nondet_int(); [L63] int __retres59 ; [L66] s__state = 12292 [L67] blastFlag = 0 [L68] tmp = __VERIFIER_nondet_int() [L69] cb = 0 [L70] ret = -1 [L71] skip = 0 [L72] tmp___0 = 0 [L73] COND TRUE s__info_callback != 0 [L74] cb = s__info_callback [L82] s__in_handshake = s__in_handshake + 1 [L83] COND FALSE !(tmp___1 - 12288) [L93] COND TRUE 1 [L95] state = s__state [L96] COND TRUE s__state == 12292 [L199] s__new_session = 1 [L200] s__state = 4096 [L201] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L206] s__server = 0 [L207] COND TRUE cb != 0 [L212] COND FALSE !(s__version - 65280 != 768) [L218] s__type = 4096 [L219] COND FALSE !(s__init_buf___0 == 0) [L237] COND FALSE !(! tmp___4) [L243] COND FALSE !(! tmp___5) [L249] s__state = 4368 [L250] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L251] s__init_num = 0 [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND TRUE s__state == 4368 [L255] s__shutdown = 0 [L256] ret = __VERIFIER_nondet_int() [L257] COND TRUE blastFlag == 0 [L258] blastFlag = 1 [L266] COND FALSE !(ret <= 0) [L271] s__state = 4384 [L272] s__init_num = 0 [L273] COND TRUE s__bbio != s__wbio [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND TRUE s__state == 4384 [L281] ret = __VERIFIER_nondet_int() [L282] COND TRUE blastFlag == 1 [L283] blastFlag = 2 [L287] COND FALSE !(ret <= 0) [L292] COND FALSE !(\read(s__hit)) [L295] s__state = 4400 [L297] s__init_num = 0 [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND FALSE !(s__state == 4384) [L120] COND FALSE !(s__state == 4385) [L123] COND TRUE s__state == 4400 [L301] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L304] ret = __VERIFIER_nondet_int() [L305] COND TRUE blastFlag == 2 [L306] blastFlag = 3 [L310] COND FALSE !(ret <= 0) [L316] s__state = 4416 [L317] s__init_num = 0 [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND FALSE !(s__state == 4384) [L120] COND FALSE !(s__state == 4385) [L123] COND FALSE !(s__state == 4400) [L126] COND FALSE !(s__state == 4401) [L129] COND TRUE s__state == 4416 [L321] ret = __VERIFIER_nondet_int() [L322] COND TRUE blastFlag == 3 [L323] blastFlag = 4 [L327] COND FALSE !(ret <= 0) [L332] s__state = 4432 [L333] ag_X = (unsigned short)65535 [L334] s__init_num = 0 [L335] COND FALSE !(! tmp___6) [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND FALSE !(s__state == 4384) [L120] COND FALSE !(s__state == 4385) [L123] COND FALSE !(s__state == 4400) [L126] COND FALSE !(s__state == 4401) [L129] COND FALSE !(s__state == 4416) [L132] COND FALSE !(s__state == 4417) [L135] COND TRUE s__state == 4432 [L344] ret = __VERIFIER_nondet_int() [L345] COND FALSE !(blastFlag == 5) [L350] COND FALSE !(ret <= 0) [L355] s__state = ag_X ^ ag_Y [L356] s__init_num = 0 [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND TRUE s__state == 4368 [L255] s__shutdown = 0 [L256] ret = __VERIFIER_nondet_int() [L257] COND FALSE !(blastFlag == 0) [L260] COND TRUE blastFlag == 4 [L261] blastFlag = 5 [L266] COND FALSE !(ret <= 0) [L271] s__state = 4384 [L272] s__init_num = 0 [L273] COND TRUE s__bbio != s__wbio [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND TRUE s__state == 4384 [L281] ret = __VERIFIER_nondet_int() [L282] COND FALSE !(blastFlag == 1) [L287] COND FALSE !(ret <= 0) [L292] COND FALSE !(\read(s__hit)) [L295] s__state = 4400 [L297] s__init_num = 0 [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND FALSE !(s__state == 4384) [L120] COND FALSE !(s__state == 4385) [L123] COND TRUE s__state == 4400 [L301] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L304] ret = __VERIFIER_nondet_int() [L305] COND FALSE !(blastFlag == 2) [L310] COND FALSE !(ret <= 0) [L316] s__state = 4416 [L317] s__init_num = 0 [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND FALSE !(s__state == 4384) [L120] COND FALSE !(s__state == 4385) [L123] COND FALSE !(s__state == 4400) [L126] COND FALSE !(s__state == 4401) [L129] COND TRUE s__state == 4416 [L321] ret = __VERIFIER_nondet_int() [L322] COND FALSE !(blastFlag == 3) [L327] COND FALSE !(ret <= 0) [L332] s__state = 4432 [L333] ag_X = (unsigned short)65535 [L334] s__init_num = 0 [L335] COND FALSE !(! tmp___6) [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND FALSE !(s__state == 4384) [L120] COND FALSE !(s__state == 4385) [L123] COND FALSE !(s__state == 4400) [L126] COND FALSE !(s__state == 4401) [L129] COND FALSE !(s__state == 4416) [L132] COND FALSE !(s__state == 4417) [L135] COND TRUE s__state == 4432 [L344] ret = __VERIFIER_nondet_int() [L345] COND TRUE blastFlag == 5 [L607] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 124 locations, 1 error locations. Result: UNSAFE, OverallTime: 5.4s, OverallIterations: 13, TraceHistogramMax: 11, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 2277 SDtfs, 1035 SDslu, 1531 SDs, 0 SdLazy, 923 SolverSat, 167 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2102 GetRequests, 2086 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1349occurred 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, 52 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 1258 NumberOfCodeBlocks, 1258 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2102 ConstructedInterpolants, 0 QuantifiedInterpolants, 455437 SizeOfPredicates, 4 NumberOfNonLiveVariables, 1661 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 24 InterpolantComputations, 24 PerfectInterpolantSequences, 3388/3388 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...