./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/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 a482892abf67e79a3ae4664db384c404b0bcc555 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/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 a482892abf67e79a3ae4664db384c404b0bcc555 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-6b5699a [2019-11-26 02:44:13,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:44:13,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:44:13,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:44:13,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:44:13,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:44:13,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:44:13,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:44:13,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:44:13,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:44:13,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:44:13,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:44:13,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:44:13,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:44:13,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:44:13,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:44:13,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:44:13,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:44:13,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:44:13,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:44:13,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:44:13,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:44:13,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:44:13,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:44:13,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:44:13,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:44:13,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:44:13,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:44:13,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:44:13,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:44:13,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:44:13,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:44:13,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:44:13,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:44:13,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:44:13,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:44:13,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:44:13,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:44:13,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:44:13,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:44:13,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:44:13,283 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:44:13,307 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:44:13,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:44:13,307 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:44:13,308 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:44:13,308 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:44:13,308 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:44:13,308 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:44:13,308 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:44:13,308 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:44:13,309 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:44:13,309 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:44:13,309 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:44:13,309 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:44:13,309 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:44:13,310 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:44:13,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:44:13,310 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:44:13,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:44:13,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:44:13,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:44:13,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:44:13,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:44:13,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:44:13,311 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:44:13,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:44:13,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:44:13,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:44:13,312 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:44:13,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:44:13,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:44:13,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:44:13,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:44:13,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:44:13,313 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:44:13,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:44:13,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:44:13,314 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:44:13,314 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_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/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 -> a482892abf67e79a3ae4664db384c404b0bcc555 [2019-11-26 02:44:13,493 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:44:13,505 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:44:13,508 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:44:13,517 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:44:13,518 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:44:13,518 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2019-11-26 02:44:13,572 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/data/a0c8754b2/a95fb65fa3d14b22af089600d2b989ce/FLAGdca4cbb78 [2019-11-26 02:44:13,985 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:44:13,986 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2019-11-26 02:44:13,997 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/data/a0c8754b2/a95fb65fa3d14b22af089600d2b989ce/FLAGdca4cbb78 [2019-11-26 02:44:14,008 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/data/a0c8754b2/a95fb65fa3d14b22af089600d2b989ce [2019-11-26 02:44:14,011 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:44:14,012 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:44:14,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:44:14,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:44:14,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:44:14,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:44:14" (1/1) ... [2019-11-26 02:44:14,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@396fe1c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:14, skipping insertion in model container [2019-11-26 02:44:14,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:44:14" (1/1) ... [2019-11-26 02:44:14,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:44:14,058 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:44:14,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:44:14,370 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:44:14,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:44:14,425 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:44:14,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:14 WrapperNode [2019-11-26 02:44:14,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:44:14,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:44:14,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:44:14,427 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:44:14,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:14" (1/1) ... [2019-11-26 02:44:14,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:14" (1/1) ... [2019-11-26 02:44:14,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:44:14,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:44:14,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:44:14,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:44:14,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:14" (1/1) ... [2019-11-26 02:44:14,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:14" (1/1) ... [2019-11-26 02:44:14,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:14" (1/1) ... [2019-11-26 02:44:14,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:14" (1/1) ... [2019-11-26 02:44:14,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:14" (1/1) ... [2019-11-26 02:44:14,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:14" (1/1) ... [2019-11-26 02:44:14,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:14" (1/1) ... [2019-11-26 02:44:14,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:44:14,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:44:14,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:44:14,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:44:14,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/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 [2019-11-26 02:44:14,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:44:14,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:44:14,698 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-26 02:44:15,197 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2019-11-26 02:44:15,197 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2019-11-26 02:44:15,875 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:44:15,875 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-26 02:44:15,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:44:15 BoogieIcfgContainer [2019-11-26 02:44:15,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:44:15,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:44:15,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:44:15,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:44:15,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:44:14" (1/3) ... [2019-11-26 02:44:15,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b4e956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:44:15, skipping insertion in model container [2019-11-26 02:44:15,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:14" (2/3) ... [2019-11-26 02:44:15,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b4e956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:44:15, skipping insertion in model container [2019-11-26 02:44:15,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:44:15" (3/3) ... [2019-11-26 02:44:15,884 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2019-11-26 02:44:15,892 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:44:15,898 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:44:15,908 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:44:15,930 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:44:15,930 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:44:15,930 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:44:15,931 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:44:15,931 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:44:15,931 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:44:15,931 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:44:15,931 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:44:15,947 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2019-11-26 02:44:15,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-26 02:44:15,953 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:44:15,954 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:44:15,954 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:44:15,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:44:15,960 INFO L82 PathProgramCache]: Analyzing trace with hash -783720474, now seen corresponding path program 1 times [2019-11-26 02:44:15,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:44:15,969 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833533538] [2019-11-26 02:44:15,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:44:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:44:16,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:44:16,122 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833533538] [2019-11-26 02:44:16,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:44:16,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:44:16,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148643402] [2019-11-26 02:44:16,129 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:44:16,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:44:16,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:44:16,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:44:16,145 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 3 states. [2019-11-26 02:44:16,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:44:16,347 INFO L93 Difference]: Finished difference Result 169 states and 293 transitions. [2019-11-26 02:44:16,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:44:16,350 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-11-26 02:44:16,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:44:16,360 INFO L225 Difference]: With dead ends: 169 [2019-11-26 02:44:16,360 INFO L226 Difference]: Without dead ends: 83 [2019-11-26 02:44:16,364 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 [2019-11-26 02:44:16,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-11-26 02:44:16,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2019-11-26 02:44:16,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-11-26 02:44:16,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 120 transitions. [2019-11-26 02:44:16,428 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 120 transitions. Word has length 19 [2019-11-26 02:44:16,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:44:16,429 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 120 transitions. [2019-11-26 02:44:16,429 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:44:16,429 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 120 transitions. [2019-11-26 02:44:16,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-26 02:44:16,431 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:44:16,431 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] [2019-11-26 02:44:16,431 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:44:16,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:44:16,432 INFO L82 PathProgramCache]: Analyzing trace with hash -476794354, now seen corresponding path program 1 times [2019-11-26 02:44:16,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:44:16,432 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159675316] [2019-11-26 02:44:16,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:44:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:44:16,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:44:16,554 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159675316] [2019-11-26 02:44:16,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:44:16,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:44:16,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755806957] [2019-11-26 02:44:16,556 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:44:16,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:44:16,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:44:16,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:44:16,557 INFO L87 Difference]: Start difference. First operand 83 states and 120 transitions. Second operand 3 states. [2019-11-26 02:44:16,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:44:16,721 INFO L93 Difference]: Finished difference Result 178 states and 261 transitions. [2019-11-26 02:44:16,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:44:16,722 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-11-26 02:44:16,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:44:16,723 INFO L225 Difference]: With dead ends: 178 [2019-11-26 02:44:16,723 INFO L226 Difference]: Without dead ends: 98 [2019-11-26 02:44:16,725 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 [2019-11-26 02:44:16,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-11-26 02:44:16,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2019-11-26 02:44:16,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-11-26 02:44:16,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 136 transitions. [2019-11-26 02:44:16,733 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 136 transitions. Word has length 28 [2019-11-26 02:44:16,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:44:16,734 INFO L462 AbstractCegarLoop]: Abstraction has 96 states and 136 transitions. [2019-11-26 02:44:16,734 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:44:16,734 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 136 transitions. [2019-11-26 02:44:16,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-26 02:44:16,735 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:44:16,736 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] [2019-11-26 02:44:16,736 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:44:16,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:44:16,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1180380277, now seen corresponding path program 1 times [2019-11-26 02:44:16,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:44:16,737 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34988141] [2019-11-26 02:44:16,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:44:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:44:16,789 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:44:16,790 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34988141] [2019-11-26 02:44:16,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:44:16,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:44:16,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660449451] [2019-11-26 02:44:16,791 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:44:16,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:44:16,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:44:16,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:44:16,792 INFO L87 Difference]: Start difference. First operand 96 states and 136 transitions. Second operand 3 states. [2019-11-26 02:44:16,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:44:16,972 INFO L93 Difference]: Finished difference Result 206 states and 297 transitions. [2019-11-26 02:44:16,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:44:16,973 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2019-11-26 02:44:16,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:44:16,975 INFO L225 Difference]: With dead ends: 206 [2019-11-26 02:44:16,975 INFO L226 Difference]: Without dead ends: 113 [2019-11-26 02:44:16,976 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 [2019-11-26 02:44:16,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2019-11-26 02:44:16,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2019-11-26 02:44:16,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-11-26 02:44:16,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 154 transitions. [2019-11-26 02:44:16,993 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 154 transitions. Word has length 39 [2019-11-26 02:44:16,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:44:16,994 INFO L462 AbstractCegarLoop]: Abstraction has 111 states and 154 transitions. [2019-11-26 02:44:16,994 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:44:16,994 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 154 transitions. [2019-11-26 02:44:16,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-26 02:44:16,998 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:44:16,999 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] [2019-11-26 02:44:16,999 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:44:16,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:44:16,999 INFO L82 PathProgramCache]: Analyzing trace with hash 261988719, now seen corresponding path program 1 times [2019-11-26 02:44:17,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:44:17,000 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976938163] [2019-11-26 02:44:17,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:44:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:44:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:44:17,154 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:44:17,154 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:44:17,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:44:17 BoogieIcfgContainer [2019-11-26 02:44:17,222 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:44:17,223 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:44:17,223 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:44:17,223 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:44:17,224 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:44:15" (3/4) ... [2019-11-26 02:44:17,228 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-26 02:44:17,228 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:44:17,231 INFO L168 Benchmark]: Toolchain (without parser) took 3217.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 946.1 MB in the beginning and 936.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 160.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:44:17,232 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:44:17,232 INFO L168 Benchmark]: CACSL2BoogieTranslator took 413.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -193.8 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:44:17,233 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.00 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. [2019-11-26 02:44:17,235 INFO L168 Benchmark]: Boogie Preprocessor took 41.71 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:44:17,236 INFO L168 Benchmark]: RCFGBuilder took 1362.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 89.5 MB). Peak memory consumption was 89.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:44:17,245 INFO L168 Benchmark]: TraceAbstraction took 1344.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 936.5 MB in the end (delta: 108.4 MB). Peak memory consumption was 108.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:44:17,246 INFO L168 Benchmark]: Witness Printer took 6.05 ms. Allocated memory is still 1.2 GB. Free memory is still 936.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:44:17,251 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 413.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -193.8 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.00 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 41.71 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1362.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 89.5 MB). Peak memory consumption was 89.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1344.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 936.5 MB in the end (delta: 108.4 MB). Peak memory consumption was 108.4 MB. Max. memory is 11.5 GB. * Witness Printer took 6.05 ms. Allocated memory is still 1.2 GB. Free memory is still 936.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 614]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 301. Possible FailurePath: [L623] 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 ; [L63] int ag_Z ; [L64] int __retres60 ; [L67] s__state = 12292 [L68] blastFlag = 0 [L69] tmp = __VERIFIER_nondet_int() [L70] cb = 0 [L71] ret = -1 [L72] skip = 0 [L73] tmp___0 = 0 [L74] COND FALSE !(s__info_callback != 0) [L77] COND TRUE s__ctx__info_callback != 0 [L78] cb = s__ctx__info_callback [L83] s__in_handshake = s__in_handshake + 1 [L84] COND TRUE tmp___1 + 12288 [L85] COND TRUE tmp___2 + 16384 [L93] COND TRUE \read(s__hit) [L94] ag_Y = 208 [L99] COND TRUE 1 [L101] state = s__state [L102] COND TRUE s__state == 12292 [L205] s__new_session = 1 [L206] s__state = 4096 [L207] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L212] s__server = 0 [L213] COND TRUE cb != 0 [L218] COND FALSE !(s__version + 65280 != 768) [L224] s__type = 4096 [L225] COND FALSE !((unsigned long )s__init_buf___0 == (unsigned long )((void *)0)) [L243] COND FALSE !(! tmp___4) [L249] COND FALSE !(! tmp___5) [L255] s__state = 4368 [L256] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L257] s__init_num = 0 [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND TRUE s__state == 4368 [L261] s__shutdown = 0 [L262] ret = __VERIFIER_nondet_int() [L263] COND TRUE blastFlag == 0 [L264] blastFlag = 1 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] ag_X = s__state - 32 [L275] s__init_num = 0 [L276] COND TRUE (unsigned long )s__bbio != (unsigned long )s__wbio [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND TRUE s__state == 4384 [L284] ret = __VERIFIER_nondet_int() [L285] COND TRUE blastFlag == 1 [L286] blastFlag = 2 [L294] COND FALSE !(ret <= 0) [L299] s__state = ag_X [L300] COND TRUE \read(s__hit) [L301] s__state = s__state | ag_Y [L305] s__init_num = 0 [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND FALSE !(s__state == 4400) [L132] COND FALSE !(s__state == 4401) [L135] COND FALSE !(s__state == 4416) [L138] COND FALSE !(s__state == 4417) [L141] COND TRUE s__state == 4432 [L351] ret = __VERIFIER_nondet_int() [L352] COND TRUE blastFlag <= 5 [L614] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 84 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 375 SDtfs, 16 SDslu, 138 SDs, 0 SdLazy, 256 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 3891 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 15/15 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 0.1.24-6b5699a [2019-11-26 02:44:19,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:44:19,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:44:19,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:44:19,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:44:19,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:44:19,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:44:19,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:44:19,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:44:19,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:44:19,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:44:19,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:44:19,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:44:19,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:44:19,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:44:19,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:44:19,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:44:19,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:44:19,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:44:19,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:44:19,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:44:19,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:44:19,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:44:19,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:44:19,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:44:19,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:44:19,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:44:19,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:44:19,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:44:19,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:44:19,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:44:19,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:44:19,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:44:19,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:44:19,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:44:19,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:44:19,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:44:19,215 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:44:19,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:44:19,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:44:19,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:44:19,217 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:44:19,231 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:44:19,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:44:19,232 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:44:19,233 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:44:19,233 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:44:19,233 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:44:19,233 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:44:19,233 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:44:19,234 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:44:19,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:44:19,235 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:44:19,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:44:19,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:44:19,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:44:19,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:44:19,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:44:19,236 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:44:19,236 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:44:19,236 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:44:19,236 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:44:19,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:44:19,237 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:44:19,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:44:19,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:44:19,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:44:19,238 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:44:19,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:44:19,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:44:19,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:44:19,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:44:19,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:44:19,239 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:44:19,239 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:44:19,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:44:19,240 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:44:19,240 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_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/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 -> a482892abf67e79a3ae4664db384c404b0bcc555 [2019-11-26 02:44:19,519 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:44:19,534 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:44:19,539 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:44:19,540 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:44:19,540 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:44:19,541 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2019-11-26 02:44:19,595 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/data/2c77a053f/14952f1a282f480abae464ff66ccb101/FLAG197415570 [2019-11-26 02:44:20,062 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:44:20,063 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2019-11-26 02:44:20,084 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/data/2c77a053f/14952f1a282f480abae464ff66ccb101/FLAG197415570 [2019-11-26 02:44:20,107 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/data/2c77a053f/14952f1a282f480abae464ff66ccb101 [2019-11-26 02:44:20,110 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:44:20,111 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:44:20,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:44:20,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:44:20,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:44:20,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:44:20" (1/1) ... [2019-11-26 02:44:20,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5811ac0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:20, skipping insertion in model container [2019-11-26 02:44:20,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:44:20" (1/1) ... [2019-11-26 02:44:20,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:44:20,186 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:44:20,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:44:20,448 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:44:20,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:44:20,599 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:44:20,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:20 WrapperNode [2019-11-26 02:44:20,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:44:20,601 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:44:20,601 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:44:20,601 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:44:20,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:20" (1/1) ... [2019-11-26 02:44:20,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:20" (1/1) ... [2019-11-26 02:44:20,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:44:20,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:44:20,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:44:20,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:44:20,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:20" (1/1) ... [2019-11-26 02:44:20,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:20" (1/1) ... [2019-11-26 02:44:20,687 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:20" (1/1) ... [2019-11-26 02:44:20,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:20" (1/1) ... [2019-11-26 02:44:20,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:20" (1/1) ... [2019-11-26 02:44:20,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:20" (1/1) ... [2019-11-26 02:44:20,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:20" (1/1) ... [2019-11-26 02:44:20,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:44:20,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:44:20,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:44:20,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:44:20,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/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 [2019-11-26 02:44:20,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:44:20,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:44:20,925 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-26 02:44:21,582 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2019-11-26 02:44:21,583 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2019-11-26 02:44:21,585 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:44:21,585 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-26 02:44:21,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:44:21 BoogieIcfgContainer [2019-11-26 02:44:21,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:44:21,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:44:21,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:44:21,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:44:21,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:44:20" (1/3) ... [2019-11-26 02:44:21,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cef4f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:44:21, skipping insertion in model container [2019-11-26 02:44:21,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:20" (2/3) ... [2019-11-26 02:44:21,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cef4f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:44:21, skipping insertion in model container [2019-11-26 02:44:21,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:44:21" (3/3) ... [2019-11-26 02:44:21,593 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2019-11-26 02:44:21,602 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:44:21,608 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:44:21,616 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:44:21,638 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:44:21,638 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:44:21,638 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:44:21,638 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:44:21,638 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:44:21,639 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:44:21,639 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:44:21,639 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:44:21,656 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2019-11-26 02:44:21,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-26 02:44:21,662 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:44:21,662 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, 1] [2019-11-26 02:44:21,663 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:44:21,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:44:21,667 INFO L82 PathProgramCache]: Analyzing trace with hash 511659491, now seen corresponding path program 1 times [2019-11-26 02:44:21,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:44:21,677 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [391871486] [2019-11-26 02:44:21,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:44:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:44:21,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-26 02:44:21,804 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:44:21,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:44:21,838 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:44:21,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:44:21,845 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [391871486] [2019-11-26 02:44:21,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:44:21,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:44:21,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631797695] [2019-11-26 02:44:21,853 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:44:21,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:44:21,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:44:21,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:44:21,869 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 3 states. [2019-11-26 02:44:22,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:44:22,113 INFO L93 Difference]: Finished difference Result 246 states and 422 transitions. [2019-11-26 02:44:22,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:44:22,115 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-11-26 02:44:22,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:44:22,129 INFO L225 Difference]: With dead ends: 246 [2019-11-26 02:44:22,130 INFO L226 Difference]: Without dead ends: 112 [2019-11-26 02:44:22,135 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:44:22,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-11-26 02:44:22,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2019-11-26 02:44:22,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-11-26 02:44:22,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 170 transitions. [2019-11-26 02:44:22,202 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 170 transitions. Word has length 24 [2019-11-26 02:44:22,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:44:22,203 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 170 transitions. [2019-11-26 02:44:22,204 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:44:22,204 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 170 transitions. [2019-11-26 02:44:22,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-26 02:44:22,207 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:44:22,208 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, 1] [2019-11-26 02:44:22,409 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:44:22,409 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:44:22,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:44:22,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1971493731, now seen corresponding path program 1 times [2019-11-26 02:44:22,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:44:22,418 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1119868651] [2019-11-26 02:44:22,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:44:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:44:22,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-26 02:44:22,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:44:22,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:44:22,512 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:44:22,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:44:22,516 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1119868651] [2019-11-26 02:44:22,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:44:22,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-26 02:44:22,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112353621] [2019-11-26 02:44:22,519 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:44:22,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:44:22,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:44:22,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:44:22,520 INFO L87 Difference]: Start difference. First operand 112 states and 170 transitions. Second operand 3 states. [2019-11-26 02:44:22,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:44:22,706 INFO L93 Difference]: Finished difference Result 232 states and 355 transitions. [2019-11-26 02:44:22,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:44:22,707 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-11-26 02:44:22,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:44:22,709 INFO L225 Difference]: With dead ends: 232 [2019-11-26 02:44:22,709 INFO L226 Difference]: Without dead ends: 130 [2019-11-26 02:44:22,710 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:44:22,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-11-26 02:44:22,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2019-11-26 02:44:22,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-11-26 02:44:22,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 190 transitions. [2019-11-26 02:44:22,721 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 190 transitions. Word has length 36 [2019-11-26 02:44:22,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:44:22,722 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 190 transitions. [2019-11-26 02:44:22,722 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:44:22,722 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 190 transitions. [2019-11-26 02:44:22,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-26 02:44:22,724 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:44:22,724 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, 1] [2019-11-26 02:44:22,926 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:44:22,927 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:44:22,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:44:22,927 INFO L82 PathProgramCache]: Analyzing trace with hash 441356492, now seen corresponding path program 1 times [2019-11-26 02:44:22,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:44:22,928 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1082422847] [2019-11-26 02:44:22,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:44:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:44:23,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-26 02:44:23,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:44:23,038 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-26 02:44:23,038 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:44:23,045 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-26 02:44:23,045 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1082422847] [2019-11-26 02:44:23,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:44:23,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-26 02:44:23,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453956259] [2019-11-26 02:44:23,046 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:44:23,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:44:23,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:44:23,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:44:23,047 INFO L87 Difference]: Start difference. First operand 127 states and 190 transitions. Second operand 3 states. [2019-11-26 02:44:23,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:44:23,220 INFO L93 Difference]: Finished difference Result 265 states and 401 transitions. [2019-11-26 02:44:23,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:44:23,220 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2019-11-26 02:44:23,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:44:23,222 INFO L225 Difference]: With dead ends: 265 [2019-11-26 02:44:23,222 INFO L226 Difference]: Without dead ends: 148 [2019-11-26 02:44:23,223 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:44:23,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-11-26 02:44:23,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2019-11-26 02:44:23,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-26 02:44:23,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 212 transitions. [2019-11-26 02:44:23,239 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 212 transitions. Word has length 50 [2019-11-26 02:44:23,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:44:23,239 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 212 transitions. [2019-11-26 02:44:23,239 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:44:23,240 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 212 transitions. [2019-11-26 02:44:23,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-26 02:44:23,242 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:44:23,244 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] [2019-11-26 02:44:23,445 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:44:23,446 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:44:23,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:44:23,446 INFO L82 PathProgramCache]: Analyzing trace with hash -394489400, now seen corresponding path program 1 times [2019-11-26 02:44:23,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:44:23,447 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1833910259] [2019-11-26 02:44:23,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:44:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:44:23,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:44:23,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:44:23,686 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-26 02:44:23,686 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:44:23,780 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-26 02:44:23,780 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1833910259] [2019-11-26 02:44:23,781 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978352830] [2019-11-26 02:44:23,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:44:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:44:23,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:44:23,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:44:23,903 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-26 02:44:23,904 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:44:23,985 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-26 02:44:23,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:44:23,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4] total 6 [2019-11-26 02:44:23,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022219226] [2019-11-26 02:44:23,987 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:44:23,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:44:23,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:44:23,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:44:23,988 INFO L87 Difference]: Start difference. First operand 144 states and 212 transitions. Second operand 6 states. [2019-11-26 02:44:24,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:44:24,639 INFO L93 Difference]: Finished difference Result 513 states and 781 transitions. [2019-11-26 02:44:24,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:44:24,639 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2019-11-26 02:44:24,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:44:24,643 INFO L225 Difference]: With dead ends: 513 [2019-11-26 02:44:24,643 INFO L226 Difference]: Without dead ends: 378 [2019-11-26 02:44:24,644 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 259 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:44:24,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2019-11-26 02:44:24,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 366. [2019-11-26 02:44:24,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2019-11-26 02:44:24,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 540 transitions. [2019-11-26 02:44:24,692 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 540 transitions. Word has length 67 [2019-11-26 02:44:24,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:44:24,694 INFO L462 AbstractCegarLoop]: Abstraction has 366 states and 540 transitions. [2019-11-26 02:44:24,694 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:44:24,694 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 540 transitions. [2019-11-26 02:44:24,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-26 02:44:24,701 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:44:24,701 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] [2019-11-26 02:44:25,104 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:44:25,112 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:44:25,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:44:25,112 INFO L82 PathProgramCache]: Analyzing trace with hash 2095039562, now seen corresponding path program 1 times [2019-11-26 02:44:25,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:44:25,112 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2141493888] [2019-11-26 02:44:25,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:44:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:44:25,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-26 02:44:25,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:44:25,217 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-26 02:44:25,217 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:44:25,225 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-26 02:44:25,226 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2141493888] [2019-11-26 02:44:25,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:44:25,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-26 02:44:25,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674280823] [2019-11-26 02:44:25,227 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:44:25,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:44:25,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:44:25,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:44:25,228 INFO L87 Difference]: Start difference. First operand 366 states and 540 transitions. Second operand 3 states. [2019-11-26 02:44:25,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:44:25,264 INFO L93 Difference]: Finished difference Result 874 states and 1297 transitions. [2019-11-26 02:44:25,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:44:25,265 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-11-26 02:44:25,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:44:25,268 INFO L225 Difference]: With dead ends: 874 [2019-11-26 02:44:25,269 INFO L226 Difference]: Without dead ends: 521 [2019-11-26 02:44:25,271 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 [2019-11-26 02:44:25,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2019-11-26 02:44:25,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 519. [2019-11-26 02:44:25,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2019-11-26 02:44:25,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 768 transitions. [2019-11-26 02:44:25,291 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 768 transitions. Word has length 67 [2019-11-26 02:44:25,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:44:25,292 INFO L462 AbstractCegarLoop]: Abstraction has 519 states and 768 transitions. [2019-11-26 02:44:25,292 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:44:25,292 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 768 transitions. [2019-11-26 02:44:25,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-26 02:44:25,293 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:44:25,294 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] [2019-11-26 02:44:25,500 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:44:25,500 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:44:25,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:44:25,500 INFO L82 PathProgramCache]: Analyzing trace with hash -811886006, now seen corresponding path program 1 times [2019-11-26 02:44:25,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:44:25,501 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2133032713] [2019-11-26 02:44:25,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:44:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:44:25,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-26 02:44:25,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:44:25,614 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-26 02:44:25,614 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:44:25,621 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-26 02:44:25,621 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2133032713] [2019-11-26 02:44:25,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:44:25,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-26 02:44:25,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56390321] [2019-11-26 02:44:25,622 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:44:25,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:44:25,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:44:25,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:44:25,623 INFO L87 Difference]: Start difference. First operand 519 states and 768 transitions. Second operand 3 states. [2019-11-26 02:44:25,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:44:25,654 INFO L93 Difference]: Finished difference Result 523 states and 770 transitions. [2019-11-26 02:44:25,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:44:25,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-11-26 02:44:25,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:44:25,657 INFO L225 Difference]: With dead ends: 523 [2019-11-26 02:44:25,657 INFO L226 Difference]: Without dead ends: 366 [2019-11-26 02:44:25,658 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 [2019-11-26 02:44:25,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2019-11-26 02:44:25,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 364. [2019-11-26 02:44:25,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2019-11-26 02:44:25,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 531 transitions. [2019-11-26 02:44:25,670 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 531 transitions. Word has length 67 [2019-11-26 02:44:25,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:44:25,670 INFO L462 AbstractCegarLoop]: Abstraction has 364 states and 531 transitions. [2019-11-26 02:44:25,670 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:44:25,671 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 531 transitions. [2019-11-26 02:44:25,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-26 02:44:25,671 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:44:25,672 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] [2019-11-26 02:44:25,882 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:44:25,883 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:44:25,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:44:25,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1677642956, now seen corresponding path program 1 times [2019-11-26 02:44:25,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:44:25,884 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1594048616] [2019-11-26 02:44:25,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:44:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:44:26,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:44:26,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:44:26,086 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-26 02:44:26,087 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:44:26,161 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-26 02:44:26,162 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1594048616] [2019-11-26 02:44:26,162 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052763344] [2019-11-26 02:44:26,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:44:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:44:26,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:44:26,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:44:26,272 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-26 02:44:26,273 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:44:26,342 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-26 02:44:26,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:44:26,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 4, 4] total 14 [2019-11-26 02:44:26,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914727608] [2019-11-26 02:44:26,344 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-26 02:44:26,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:44:26,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-26 02:44:26,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2019-11-26 02:44:26,346 INFO L87 Difference]: Start difference. First operand 364 states and 531 transitions. Second operand 14 states. [2019-11-26 02:44:28,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:44:28,680 INFO L93 Difference]: Finished difference Result 1164 states and 1757 transitions. [2019-11-26 02:44:28,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-26 02:44:28,682 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 67 [2019-11-26 02:44:28,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:44:28,687 INFO L225 Difference]: With dead ends: 1164 [2019-11-26 02:44:28,689 INFO L226 Difference]: Without dead ends: 804 [2019-11-26 02:44:28,690 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2019-11-26 02:44:28,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2019-11-26 02:44:28,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 501. [2019-11-26 02:44:28,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2019-11-26 02:44:28,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 702 transitions. [2019-11-26 02:44:28,713 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 702 transitions. Word has length 67 [2019-11-26 02:44:28,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:44:28,714 INFO L462 AbstractCegarLoop]: Abstraction has 501 states and 702 transitions. [2019-11-26 02:44:28,714 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-26 02:44:28,714 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 702 transitions. [2019-11-26 02:44:28,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-11-26 02:44:28,716 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:44:28,716 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, 1] [2019-11-26 02:44:29,119 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:44:29,120 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:44:29,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:44:29,120 INFO L82 PathProgramCache]: Analyzing trace with hash -602651212, now seen corresponding path program 1 times [2019-11-26 02:44:29,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:44:29,120 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [787348647] [2019-11-26 02:44:29,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:44:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:44:29,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-26 02:44:29,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:44:29,223 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-26 02:44:29,223 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:44:29,230 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-26 02:44:29,230 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [787348647] [2019-11-26 02:44:29,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:44:29,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-26 02:44:29,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786365670] [2019-11-26 02:44:29,232 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:44:29,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:44:29,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:44:29,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:44:29,232 INFO L87 Difference]: Start difference. First operand 501 states and 702 transitions. Second operand 3 states. [2019-11-26 02:44:29,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:44:29,388 INFO L93 Difference]: Finished difference Result 1037 states and 1470 transitions. [2019-11-26 02:44:29,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:44:29,389 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2019-11-26 02:44:29,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:44:29,393 INFO L225 Difference]: With dead ends: 1037 [2019-11-26 02:44:29,393 INFO L226 Difference]: Without dead ends: 549 [2019-11-26 02:44:29,394 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:44:29,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2019-11-26 02:44:29,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 543. [2019-11-26 02:44:29,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2019-11-26 02:44:29,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 754 transitions. [2019-11-26 02:44:29,413 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 754 transitions. Word has length 84 [2019-11-26 02:44:29,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:44:29,413 INFO L462 AbstractCegarLoop]: Abstraction has 543 states and 754 transitions. [2019-11-26 02:44:29,413 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:44:29,414 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 754 transitions. [2019-11-26 02:44:29,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-11-26 02:44:29,415 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:44:29,415 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] [2019-11-26 02:44:29,617 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:44:29,617 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:44:29,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:44:29,617 INFO L82 PathProgramCache]: Analyzing trace with hash -801029670, now seen corresponding path program 1 times [2019-11-26 02:44:29,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:44:29,618 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1693225805] [2019-11-26 02:44:29,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:44:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:44:29,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-26 02:44:29,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:44:29,731 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-26 02:44:29,731 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:44:29,748 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-26 02:44:29,749 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1693225805] [2019-11-26 02:44:29,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:44:29,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-26 02:44:29,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119826204] [2019-11-26 02:44:29,750 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:44:29,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:44:29,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:44:29,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:44:29,751 INFO L87 Difference]: Start difference. First operand 543 states and 754 transitions. Second operand 4 states. [2019-11-26 02:44:29,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:44:29,818 INFO L93 Difference]: Finished difference Result 1649 states and 2284 transitions. [2019-11-26 02:44:29,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:44:29,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2019-11-26 02:44:29,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:44:29,825 INFO L225 Difference]: With dead ends: 1649 [2019-11-26 02:44:29,825 INFO L226 Difference]: Without dead ends: 1119 [2019-11-26 02:44:29,826 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:44:29,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2019-11-26 02:44:29,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1115. [2019-11-26 02:44:29,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1115 states. [2019-11-26 02:44:29,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1531 transitions. [2019-11-26 02:44:29,864 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1531 transitions. Word has length 103 [2019-11-26 02:44:29,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:44:29,864 INFO L462 AbstractCegarLoop]: Abstraction has 1115 states and 1531 transitions. [2019-11-26 02:44:29,864 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:44:29,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1531 transitions. [2019-11-26 02:44:29,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-11-26 02:44:29,866 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:44:29,866 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] [2019-11-26 02:44:30,076 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:44:30,076 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:44:30,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:44:30,077 INFO L82 PathProgramCache]: Analyzing trace with hash -935043176, now seen corresponding path program 1 times [2019-11-26 02:44:30,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:44:30,077 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [636808589] [2019-11-26 02:44:30,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:44:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:44:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:44:30,516 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-11-26 02:44:30,517 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:44:30,720 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:44:30,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:44:30 BoogieIcfgContainer [2019-11-26 02:44:30,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:44:30,806 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:44:30,806 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:44:30,806 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:44:30,807 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:44:21" (3/4) ... [2019-11-26 02:44:30,809 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:44:30,954 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5a96811b-5abe-48fc-bd42-3a897b3fd3d0/bin/utaipan/witness.graphml [2019-11-26 02:44:30,954 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:44:30,956 INFO L168 Benchmark]: Toolchain (without parser) took 10844.75 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 285.2 MB). Free memory was 957.8 MB in the beginning and 949.4 MB in the end (delta: 8.3 MB). Peak memory consumption was 293.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:44:30,956 INFO L168 Benchmark]: CDTParser took 0.22 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. [2019-11-26 02:44:30,957 INFO L168 Benchmark]: CACSL2BoogieTranslator took 486.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.7 MB). Free memory was 957.8 MB in the beginning and 1.1 GB in the end (delta: -191.0 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:44:30,957 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.66 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. [2019-11-26 02:44:30,957 INFO L168 Benchmark]: Boogie Preprocessor took 54.23 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:44:30,958 INFO L168 Benchmark]: RCFGBuilder took 856.07 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: 44.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:44:30,958 INFO L168 Benchmark]: TraceAbstraction took 9218.20 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 119.5 MB). Free memory was 1.1 GB in the beginning and 957.8 MB in the end (delta: 140.0 MB). Peak memory consumption was 259.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:44:30,958 INFO L168 Benchmark]: Witness Printer took 148.34 ms. Allocated memory is still 1.3 GB. Free memory was 957.8 MB in the beginning and 949.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:44:30,960 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 486.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.7 MB). Free memory was 957.8 MB in the beginning and 1.1 GB in the end (delta: -191.0 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 74.66 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 54.23 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 856.07 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: 44.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9218.20 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 119.5 MB). Free memory was 1.1 GB in the beginning and 957.8 MB in the end (delta: 140.0 MB). Peak memory consumption was 259.5 MB. Max. memory is 11.5 GB. * Witness Printer took 148.34 ms. Allocated memory is still 1.3 GB. Free memory was 957.8 MB in the beginning and 949.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 614]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L623] 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 ; [L63] int ag_Z ; [L64] int __retres60 ; [L67] s__state = 12292 [L68] blastFlag = 0 [L69] tmp = __VERIFIER_nondet_int() [L70] cb = 0 [L71] ret = -1 [L72] skip = 0 [L73] tmp___0 = 0 [L74] COND TRUE s__info_callback != 0 [L75] cb = s__info_callback [L83] s__in_handshake = s__in_handshake + 1 [L84] COND FALSE !(tmp___1 + 12288) [L93] COND FALSE !(\read(s__hit)) [L96] ag_Z = 48 [L99] COND TRUE 1 [L101] state = s__state [L102] COND TRUE s__state == 12292 [L205] s__new_session = 1 [L206] s__state = 4096 [L207] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L212] s__server = 0 [L213] COND TRUE cb != 0 [L218] COND FALSE !(s__version + 65280 != 768) [L224] s__type = 4096 [L225] COND FALSE !((unsigned long )s__init_buf___0 == (unsigned long )((void *)0)) [L243] COND FALSE !(! tmp___4) [L249] COND FALSE !(! tmp___5) [L255] s__state = 4368 [L256] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L257] s__init_num = 0 [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND TRUE s__state == 4368 [L261] s__shutdown = 0 [L262] ret = __VERIFIER_nondet_int() [L263] COND TRUE blastFlag == 0 [L264] blastFlag = 1 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] ag_X = s__state - 32 [L275] s__init_num = 0 [L276] COND TRUE (unsigned long )s__bbio != (unsigned long )s__wbio [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND TRUE s__state == 4384 [L284] ret = __VERIFIER_nondet_int() [L285] COND TRUE blastFlag == 1 [L286] blastFlag = 2 [L294] COND FALSE !(ret <= 0) [L299] s__state = ag_X [L300] COND FALSE !(\read(s__hit)) [L303] s__state = s__state | ag_Z [L305] s__init_num = 0 [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND TRUE s__state == 4400 [L309] COND TRUE (unsigned long )s__s3__tmp__new_cipher__algorithms + 256UL [L310] skip = 1 [L324] s__state = 4416 [L325] s__init_num = 0 [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND FALSE !(s__state == 4400) [L132] COND FALSE !(s__state == 4401) [L135] COND TRUE s__state == 4416 [L329] ret = __VERIFIER_nondet_int() [L330] COND FALSE !(blastFlag == 3) [L335] COND FALSE !(ret <= 0) [L340] s__state = 4432 [L341] s__init_num = 0 [L342] COND FALSE !(! tmp___6) [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND FALSE !(s__state == 4400) [L132] COND FALSE !(s__state == 4401) [L135] COND FALSE !(s__state == 4416) [L138] COND FALSE !(s__state == 4417) [L141] COND TRUE s__state == 4432 [L351] ret = __VERIFIER_nondet_int() [L352] COND TRUE blastFlag <= 5 [L614] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 125 locations, 1 error locations. Result: UNSAFE, OverallTime: 9.1s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1643 SDtfs, 2068 SDslu, 2524 SDs, 0 SdLazy, 2420 SolverSat, 384 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1393 GetRequests, 1352 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1115occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 336 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 802 NumberOfCodeBlocks, 802 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1376 ConstructedInterpolants, 177 QuantifiedInterpolants, 274736 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1220 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 22 InterpolantComputations, 14 PerfectInterpolantSequences, 759/960 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...