./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6995ed6ba91d7bb4325b7b2cb6cc1ca7ba7d3a61 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6995ed6ba91d7bb4325b7b2cb6cc1ca7ba7d3a61 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:21:35,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:21:35,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:21:35,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:21:35,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:21:35,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:21:35,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:21:35,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:21:35,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:21:35,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:21:35,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:21:35,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:21:35,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:21:35,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:21:35,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:21:35,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:21:35,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:21:35,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:21:35,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:21:35,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:21:35,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:21:35,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:21:35,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:21:35,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:21:35,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:21:35,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:21:35,385 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:21:35,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:21:35,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:21:35,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:21:35,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:21:35,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:21:35,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:21:35,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:21:35,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:21:35,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:21:35,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:21:35,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:21:35,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:21:35,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:21:35,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:21:35,403 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:21:35,453 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:21:35,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:21:35,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:21:35,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:21:35,458 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:21:35,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:21:35,458 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:21:35,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:21:35,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:21:35,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:21:35,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:21:35,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:21:35,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:21:35,461 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:21:35,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:21:35,462 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:21:35,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:21:35,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:21:35,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:21:35,463 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:21:35,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:21:35,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:21:35,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:21:35,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:21:35,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:21:35,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:21:35,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:21:35,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:21:35,465 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:21:35,465 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6995ed6ba91d7bb4325b7b2cb6cc1ca7ba7d3a61 [2020-11-28 03:21:35,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:21:35,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:21:35,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:21:35,796 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:21:35,798 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:21:35,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c [2020-11-28 03:21:35,923 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/data/70c5d4524/59bc19bd728845ada718c8226f17cfc3/FLAG1cf52d7ea [2020-11-28 03:21:36,472 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:21:36,473 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c [2020-11-28 03:21:36,485 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/data/70c5d4524/59bc19bd728845ada718c8226f17cfc3/FLAG1cf52d7ea [2020-11-28 03:21:36,757 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/data/70c5d4524/59bc19bd728845ada718c8226f17cfc3 [2020-11-28 03:21:36,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:21:36,762 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:21:36,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:21:36,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:21:36,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:21:36,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:21:36" (1/1) ... [2020-11-28 03:21:36,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@275c192d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:36, skipping insertion in model container [2020-11-28 03:21:36,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:21:36" (1/1) ... [2020-11-28 03:21:36,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:21:36,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:21:37,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:21:37,151 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:21:37,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:21:37,283 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:21:37,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:37 WrapperNode [2020-11-28 03:21:37,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:21:37,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:21:37,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:21:37,285 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:21:37,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:37" (1/1) ... [2020-11-28 03:21:37,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:37" (1/1) ... [2020-11-28 03:21:37,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:21:37,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:21:37,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:21:37,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:21:37,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:37" (1/1) ... [2020-11-28 03:21:37,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:37" (1/1) ... [2020-11-28 03:21:37,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:37" (1/1) ... [2020-11-28 03:21:37,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:37" (1/1) ... [2020-11-28 03:21:37,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:37" (1/1) ... [2020-11-28 03:21:37,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:37" (1/1) ... [2020-11-28 03:21:37,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:37" (1/1) ... [2020-11-28 03:21:37,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:21:37,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:21:37,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:21:37,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:21:37,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:21:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:21:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:21:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:21:37,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:21:37,690 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-28 03:21:38,475 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-11-28 03:21:38,476 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-11-28 03:21:38,490 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:21:38,490 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 03:21:38,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:21:38 BoogieIcfgContainer [2020-11-28 03:21:38,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:21:38,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:21:38,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:21:38,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:21:38,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:21:36" (1/3) ... [2020-11-28 03:21:38,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29852277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:21:38, skipping insertion in model container [2020-11-28 03:21:38,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:37" (2/3) ... [2020-11-28 03:21:38,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29852277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:21:38, skipping insertion in model container [2020-11-28 03:21:38,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:21:38" (3/3) ... [2020-11-28 03:21:38,509 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.BV.c.cil-2a.c [2020-11-28 03:21:38,523 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:21:38,529 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:21:38,540 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:21:38,580 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:21:38,581 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:21:38,582 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:21:38,582 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:21:38,582 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:21:38,582 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:21:38,582 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:21:38,582 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:21:38,599 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states. [2020-11-28 03:21:38,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 03:21:38,607 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:38,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:38,608 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:38,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:38,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1457697026, now seen corresponding path program 1 times [2020-11-28 03:21:38,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:38,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693102352] [2020-11-28 03:21:38,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:38,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:38,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693102352] [2020-11-28 03:21:38,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:38,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:21:38,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305399527] [2020-11-28 03:21:38,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:21:38,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:38,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:21:38,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:38,878 INFO L87 Difference]: Start difference. First operand 126 states. Second operand 3 states. [2020-11-28 03:21:39,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:39,163 INFO L93 Difference]: Finished difference Result 247 states and 422 transitions. [2020-11-28 03:21:39,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:21:39,165 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-28 03:21:39,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:39,178 INFO L225 Difference]: With dead ends: 247 [2020-11-28 03:21:39,179 INFO L226 Difference]: Without dead ends: 112 [2020-11-28 03:21:39,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:39,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-11-28 03:21:39,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-11-28 03:21:39,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-28 03:21:39,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 169 transitions. [2020-11-28 03:21:39,237 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 169 transitions. Word has length 24 [2020-11-28 03:21:39,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:39,238 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 169 transitions. [2020-11-28 03:21:39,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:21:39,238 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 169 transitions. [2020-11-28 03:21:39,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-28 03:21:39,240 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:39,241 INFO L422 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] [2020-11-28 03:21:39,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:21:39,241 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:39,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:39,242 INFO L82 PathProgramCache]: Analyzing trace with hash -611475394, now seen corresponding path program 1 times [2020-11-28 03:21:39,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:39,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163078626] [2020-11-28 03:21:39,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:39,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:39,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163078626] [2020-11-28 03:21:39,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:39,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:21:39,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695021907] [2020-11-28 03:21:39,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:21:39,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:39,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:21:39,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:39,348 INFO L87 Difference]: Start difference. First operand 112 states and 169 transitions. Second operand 3 states. [2020-11-28 03:21:39,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:39,610 INFO L93 Difference]: Finished difference Result 233 states and 356 transitions. [2020-11-28 03:21:39,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:21:39,610 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-11-28 03:21:39,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:39,613 INFO L225 Difference]: With dead ends: 233 [2020-11-28 03:21:39,613 INFO L226 Difference]: Without dead ends: 131 [2020-11-28 03:21:39,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:39,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-28 03:21:39,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2020-11-28 03:21:39,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-11-28 03:21:39,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 189 transitions. [2020-11-28 03:21:39,631 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 189 transitions. Word has length 36 [2020-11-28 03:21:39,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:39,631 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 189 transitions. [2020-11-28 03:21:39,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:21:39,632 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 189 transitions. [2020-11-28 03:21:39,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-28 03:21:39,634 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:39,635 INFO L422 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] [2020-11-28 03:21:39,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:21:39,635 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:39,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:39,636 INFO L82 PathProgramCache]: Analyzing trace with hash 213639527, now seen corresponding path program 1 times [2020-11-28 03:21:39,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:39,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786799597] [2020-11-28 03:21:39,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:39,730 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 03:21:39,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786799597] [2020-11-28 03:21:39,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:39,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:21:39,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786203082] [2020-11-28 03:21:39,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:21:39,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:39,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:21:39,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:39,741 INFO L87 Difference]: Start difference. First operand 127 states and 189 transitions. Second operand 3 states. [2020-11-28 03:21:39,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:39,931 INFO L93 Difference]: Finished difference Result 265 states and 400 transitions. [2020-11-28 03:21:39,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:21:39,932 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-11-28 03:21:39,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:39,934 INFO L225 Difference]: With dead ends: 265 [2020-11-28 03:21:39,934 INFO L226 Difference]: Without dead ends: 148 [2020-11-28 03:21:39,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:39,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-11-28 03:21:39,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2020-11-28 03:21:39,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-11-28 03:21:39,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 211 transitions. [2020-11-28 03:21:39,957 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 211 transitions. Word has length 50 [2020-11-28 03:21:39,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:39,959 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 211 transitions. [2020-11-28 03:21:39,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:21:39,959 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 211 transitions. [2020-11-28 03:21:39,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-11-28 03:21:39,962 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:39,962 INFO L422 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] [2020-11-28 03:21:39,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:21:39,963 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:39,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:39,965 INFO L82 PathProgramCache]: Analyzing trace with hash 370823208, now seen corresponding path program 1 times [2020-11-28 03:21:39,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:39,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906980232] [2020-11-28 03:21:39,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-28 03:21:40,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906980232] [2020-11-28 03:21:40,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:40,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:21:40,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358107870] [2020-11-28 03:21:40,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:21:40,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:40,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:21:40,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:40,098 INFO L87 Difference]: Start difference. First operand 144 states and 211 transitions. Second operand 3 states. [2020-11-28 03:21:40,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:40,416 INFO L93 Difference]: Finished difference Result 328 states and 496 transitions. [2020-11-28 03:21:40,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:21:40,417 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-11-28 03:21:40,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:40,419 INFO L225 Difference]: With dead ends: 328 [2020-11-28 03:21:40,419 INFO L226 Difference]: Without dead ends: 193 [2020-11-28 03:21:40,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:40,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-11-28 03:21:40,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 185. [2020-11-28 03:21:40,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-11-28 03:21:40,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 261 transitions. [2020-11-28 03:21:40,447 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 261 transitions. Word has length 67 [2020-11-28 03:21:40,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:40,447 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 261 transitions. [2020-11-28 03:21:40,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:21:40,447 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 261 transitions. [2020-11-28 03:21:40,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-11-28 03:21:40,449 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:40,450 INFO L422 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] [2020-11-28 03:21:40,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:21:40,450 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:40,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:40,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1434615126, now seen corresponding path program 1 times [2020-11-28 03:21:40,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:40,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31588966] [2020-11-28 03:21:40,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:40,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:40,592 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-28 03:21:40,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31588966] [2020-11-28 03:21:40,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:40,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:21:40,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179947062] [2020-11-28 03:21:40,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:21:40,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:40,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:21:40,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:40,596 INFO L87 Difference]: Start difference. First operand 185 states and 261 transitions. Second operand 3 states. [2020-11-28 03:21:40,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:40,808 INFO L93 Difference]: Finished difference Result 383 states and 548 transitions. [2020-11-28 03:21:40,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:21:40,809 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-11-28 03:21:40,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:40,811 INFO L225 Difference]: With dead ends: 383 [2020-11-28 03:21:40,811 INFO L226 Difference]: Without dead ends: 208 [2020-11-28 03:21:40,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:40,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-11-28 03:21:40,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 204. [2020-11-28 03:21:40,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-11-28 03:21:40,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 285 transitions. [2020-11-28 03:21:40,831 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 285 transitions. Word has length 67 [2020-11-28 03:21:40,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:40,833 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 285 transitions. [2020-11-28 03:21:40,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:21:40,834 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 285 transitions. [2020-11-28 03:21:40,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-11-28 03:21:40,840 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:40,840 INFO L422 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] [2020-11-28 03:21:40,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:21:40,841 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:40,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:40,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1023824768, now seen corresponding path program 1 times [2020-11-28 03:21:40,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:40,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214533231] [2020-11-28 03:21:40,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:40,950 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-11-28 03:21:40,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214533231] [2020-11-28 03:21:40,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:40,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:21:40,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269354594] [2020-11-28 03:21:40,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:21:40,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:40,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:21:40,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:40,953 INFO L87 Difference]: Start difference. First operand 204 states and 285 transitions. Second operand 3 states. [2020-11-28 03:21:41,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:41,189 INFO L93 Difference]: Finished difference Result 422 states and 598 transitions. [2020-11-28 03:21:41,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:21:41,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-11-28 03:21:41,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:41,192 INFO L225 Difference]: With dead ends: 422 [2020-11-28 03:21:41,192 INFO L226 Difference]: Without dead ends: 228 [2020-11-28 03:21:41,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:41,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-11-28 03:21:41,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 225. [2020-11-28 03:21:41,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-11-28 03:21:41,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 311 transitions. [2020-11-28 03:21:41,213 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 311 transitions. Word has length 83 [2020-11-28 03:21:41,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:41,214 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 311 transitions. [2020-11-28 03:21:41,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:21:41,214 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 311 transitions. [2020-11-28 03:21:41,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-28 03:21:41,216 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:41,216 INFO L422 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] [2020-11-28 03:21:41,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:21:41,217 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:41,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:41,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1619803512, now seen corresponding path program 1 times [2020-11-28 03:21:41,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:41,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507476821] [2020-11-28 03:21:41,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:41,351 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-28 03:21:41,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507476821] [2020-11-28 03:21:41,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:41,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:21:41,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303903167] [2020-11-28 03:21:41,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:21:41,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:41,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:21:41,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:41,354 INFO L87 Difference]: Start difference. First operand 225 states and 311 transitions. Second operand 3 states. [2020-11-28 03:21:41,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:41,414 INFO L93 Difference]: Finished difference Result 652 states and 903 transitions. [2020-11-28 03:21:41,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:21:41,414 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-11-28 03:21:41,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:41,418 INFO L225 Difference]: With dead ends: 652 [2020-11-28 03:21:41,418 INFO L226 Difference]: Without dead ends: 437 [2020-11-28 03:21:41,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:41,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-11-28 03:21:41,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2020-11-28 03:21:41,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-11-28 03:21:41,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 600 transitions. [2020-11-28 03:21:41,438 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 600 transitions. Word has length 103 [2020-11-28 03:21:41,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:41,438 INFO L481 AbstractCegarLoop]: Abstraction has 437 states and 600 transitions. [2020-11-28 03:21:41,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:21:41,439 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 600 transitions. [2020-11-28 03:21:41,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-28 03:21:41,441 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:41,441 INFO L422 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] [2020-11-28 03:21:41,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:21:41,442 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:41,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:41,442 INFO L82 PathProgramCache]: Analyzing trace with hash -713589126, now seen corresponding path program 1 times [2020-11-28 03:21:41,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:41,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828873370] [2020-11-28 03:21:41,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:41,521 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-11-28 03:21:41,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828873370] [2020-11-28 03:21:41,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:41,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:21:41,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327254206] [2020-11-28 03:21:41,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:21:41,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:41,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:21:41,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:41,527 INFO L87 Difference]: Start difference. First operand 437 states and 600 transitions. Second operand 3 states. [2020-11-28 03:21:41,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:41,567 INFO L93 Difference]: Finished difference Result 885 states and 1214 transitions. [2020-11-28 03:21:41,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:21:41,568 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-11-28 03:21:41,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:41,572 INFO L225 Difference]: With dead ends: 885 [2020-11-28 03:21:41,572 INFO L226 Difference]: Without dead ends: 458 [2020-11-28 03:21:41,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:41,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-11-28 03:21:41,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 458. [2020-11-28 03:21:41,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2020-11-28 03:21:41,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 627 transitions. [2020-11-28 03:21:41,604 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 627 transitions. Word has length 103 [2020-11-28 03:21:41,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:41,606 INFO L481 AbstractCegarLoop]: Abstraction has 458 states and 627 transitions. [2020-11-28 03:21:41,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:21:41,606 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 627 transitions. [2020-11-28 03:21:41,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-11-28 03:21:41,608 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:41,608 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:41,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:21:41,609 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:41,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:41,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1034569449, now seen corresponding path program 1 times [2020-11-28 03:21:41,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:41,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146251931] [2020-11-28 03:21:41,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:41,684 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-11-28 03:21:41,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146251931] [2020-11-28 03:21:41,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:41,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:21:41,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646239771] [2020-11-28 03:21:41,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:21:41,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:41,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:21:41,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:41,695 INFO L87 Difference]: Start difference. First operand 458 states and 627 transitions. Second operand 3 states. [2020-11-28 03:21:41,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:41,733 INFO L93 Difference]: Finished difference Result 932 states and 1274 transitions. [2020-11-28 03:21:41,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:21:41,734 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2020-11-28 03:21:41,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:41,738 INFO L225 Difference]: With dead ends: 932 [2020-11-28 03:21:41,739 INFO L226 Difference]: Without dead ends: 484 [2020-11-28 03:21:41,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:41,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-11-28 03:21:41,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2020-11-28 03:21:41,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-11-28 03:21:41,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 660 transitions. [2020-11-28 03:21:41,757 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 660 transitions. Word has length 104 [2020-11-28 03:21:41,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:41,758 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 660 transitions. [2020-11-28 03:21:41,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:21:41,758 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 660 transitions. [2020-11-28 03:21:41,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-11-28 03:21:41,760 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:41,760 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:41,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 03:21:41,761 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:41,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:41,761 INFO L82 PathProgramCache]: Analyzing trace with hash -53319870, now seen corresponding path program 1 times [2020-11-28 03:21:41,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:41,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945561718] [2020-11-28 03:21:41,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:41,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:41,838 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-11-28 03:21:41,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945561718] [2020-11-28 03:21:41,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:41,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:21:41,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915758678] [2020-11-28 03:21:41,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:21:41,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:41,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:21:41,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:41,841 INFO L87 Difference]: Start difference. First operand 484 states and 660 transitions. Second operand 3 states. [2020-11-28 03:21:41,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:41,897 INFO L93 Difference]: Finished difference Result 699 states and 957 transitions. [2020-11-28 03:21:41,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:21:41,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-11-28 03:21:41,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:41,902 INFO L225 Difference]: With dead ends: 699 [2020-11-28 03:21:41,902 INFO L226 Difference]: Without dead ends: 697 [2020-11-28 03:21:41,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:41,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-11-28 03:21:41,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2020-11-28 03:21:41,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-11-28 03:21:41,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 955 transitions. [2020-11-28 03:21:41,925 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 955 transitions. Word has length 105 [2020-11-28 03:21:41,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:41,925 INFO L481 AbstractCegarLoop]: Abstraction has 697 states and 955 transitions. [2020-11-28 03:21:41,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:21:41,926 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 955 transitions. [2020-11-28 03:21:41,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-11-28 03:21:41,929 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:41,930 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:41,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 03:21:41,930 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:41,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:41,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1519363111, now seen corresponding path program 1 times [2020-11-28 03:21:41,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:41,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138135704] [2020-11-28 03:21:41,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:42,021 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-11-28 03:21:42,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138135704] [2020-11-28 03:21:42,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:42,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:21:42,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995065419] [2020-11-28 03:21:42,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:21:42,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:42,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:21:42,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:42,025 INFO L87 Difference]: Start difference. First operand 697 states and 955 transitions. Second operand 3 states. [2020-11-28 03:21:42,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:42,297 INFO L93 Difference]: Finished difference Result 1508 states and 2127 transitions. [2020-11-28 03:21:42,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:21:42,298 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 173 [2020-11-28 03:21:42,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:42,304 INFO L225 Difference]: With dead ends: 1508 [2020-11-28 03:21:42,304 INFO L226 Difference]: Without dead ends: 844 [2020-11-28 03:21:42,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:42,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-11-28 03:21:42,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 814. [2020-11-28 03:21:42,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 814 states. [2020-11-28 03:21:42,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1144 transitions. [2020-11-28 03:21:42,334 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1144 transitions. Word has length 173 [2020-11-28 03:21:42,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:42,335 INFO L481 AbstractCegarLoop]: Abstraction has 814 states and 1144 transitions. [2020-11-28 03:21:42,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:21:42,335 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1144 transitions. [2020-11-28 03:21:42,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-11-28 03:21:42,339 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:42,339 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-28 03:21:42,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 03:21:42,340 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:42,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:42,340 INFO L82 PathProgramCache]: Analyzing trace with hash -598161639, now seen corresponding path program 2 times [2020-11-28 03:21:42,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:42,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101123623] [2020-11-28 03:21:42,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:42,427 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-11-28 03:21:42,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101123623] [2020-11-28 03:21:42,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:42,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:21:42,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512939438] [2020-11-28 03:21:42,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:21:42,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:42,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:21:42,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:42,430 INFO L87 Difference]: Start difference. First operand 814 states and 1144 transitions. Second operand 3 states. [2020-11-28 03:21:42,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:42,740 INFO L93 Difference]: Finished difference Result 1870 states and 2708 transitions. [2020-11-28 03:21:42,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:21:42,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 185 [2020-11-28 03:21:42,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:42,748 INFO L225 Difference]: With dead ends: 1870 [2020-11-28 03:21:42,749 INFO L226 Difference]: Without dead ends: 1041 [2020-11-28 03:21:42,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:42,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2020-11-28 03:21:42,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1003. [2020-11-28 03:21:42,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-11-28 03:21:42,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1396 transitions. [2020-11-28 03:21:42,787 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1396 transitions. Word has length 185 [2020-11-28 03:21:42,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:42,787 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1396 transitions. [2020-11-28 03:21:42,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:21:42,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1396 transitions. [2020-11-28 03:21:42,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-11-28 03:21:42,792 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:42,793 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:42,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-28 03:21:42,793 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:42,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:42,794 INFO L82 PathProgramCache]: Analyzing trace with hash -759567935, now seen corresponding path program 1 times [2020-11-28 03:21:42,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:42,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430181567] [2020-11-28 03:21:42,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:43,012 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-11-28 03:21:43,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430181567] [2020-11-28 03:21:43,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:43,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:21:43,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925532394] [2020-11-28 03:21:43,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:21:43,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:43,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:21:43,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:43,016 INFO L87 Difference]: Start difference. First operand 1003 states and 1396 transitions. Second operand 3 states. [2020-11-28 03:21:43,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:43,083 INFO L93 Difference]: Finished difference Result 2282 states and 3180 transitions. [2020-11-28 03:21:43,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:21:43,084 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2020-11-28 03:21:43,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:43,093 INFO L225 Difference]: With dead ends: 2282 [2020-11-28 03:21:43,093 INFO L226 Difference]: Without dead ends: 1315 [2020-11-28 03:21:43,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:43,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2020-11-28 03:21:43,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1315. [2020-11-28 03:21:43,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1315 states. [2020-11-28 03:21:43,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1828 transitions. [2020-11-28 03:21:43,157 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1828 transitions. Word has length 194 [2020-11-28 03:21:43,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:43,160 INFO L481 AbstractCegarLoop]: Abstraction has 1315 states and 1828 transitions. [2020-11-28 03:21:43,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:21:43,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1828 transitions. [2020-11-28 03:21:43,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-11-28 03:21:43,166 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:43,166 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:43,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-28 03:21:43,167 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:43,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:43,168 INFO L82 PathProgramCache]: Analyzing trace with hash -915330113, now seen corresponding path program 1 times [2020-11-28 03:21:43,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:43,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407460035] [2020-11-28 03:21:43,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:43,297 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-11-28 03:21:43,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407460035] [2020-11-28 03:21:43,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:43,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:21:43,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146347604] [2020-11-28 03:21:43,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:21:43,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:43,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:21:43,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:43,299 INFO L87 Difference]: Start difference. First operand 1315 states and 1828 transitions. Second operand 3 states. [2020-11-28 03:21:43,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:43,381 INFO L93 Difference]: Finished difference Result 3583 states and 5032 transitions. [2020-11-28 03:21:43,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:21:43,382 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2020-11-28 03:21:43,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:43,398 INFO L225 Difference]: With dead ends: 3583 [2020-11-28 03:21:43,398 INFO L226 Difference]: Without dead ends: 2325 [2020-11-28 03:21:43,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:43,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2325 states. [2020-11-28 03:21:43,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2325 to 2323. [2020-11-28 03:21:43,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2323 states. [2020-11-28 03:21:43,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 3265 transitions. [2020-11-28 03:21:43,498 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 3265 transitions. Word has length 196 [2020-11-28 03:21:43,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:43,498 INFO L481 AbstractCegarLoop]: Abstraction has 2323 states and 3265 transitions. [2020-11-28 03:21:43,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:21:43,499 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 3265 transitions. [2020-11-28 03:21:43,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-11-28 03:21:43,504 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:43,505 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:43,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-28 03:21:43,505 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:43,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:43,506 INFO L82 PathProgramCache]: Analyzing trace with hash 342847369, now seen corresponding path program 1 times [2020-11-28 03:21:43,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:43,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161197963] [2020-11-28 03:21:43,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:21:43,594 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:21:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:21:43,682 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:21:43,813 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:21:43,814 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:21:43,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-28 03:21:43,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:21:43 BoogieIcfgContainer [2020-11-28 03:21:43,963 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:21:43,963 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:21:43,964 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:21:43,964 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:21:43,964 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:21:38" (3/4) ... [2020-11-28 03:21:43,967 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:21:43,967 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:21:43,969 INFO L168 Benchmark]: Toolchain (without parser) took 7206.90 ms. Allocated memory was 102.8 MB in the beginning and 157.3 MB in the end (delta: 54.5 MB). Free memory was 70.0 MB in the beginning and 92.5 MB in the end (delta: -22.5 MB). Peak memory consumption was 32.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:43,970 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 73.4 MB. Free memory was 34.0 MB in the beginning and 34.0 MB in the end (delta: 67.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:21:43,970 INFO L168 Benchmark]: CACSL2BoogieTranslator took 517.15 ms. Allocated memory is still 102.8 MB. Free memory was 69.7 MB in the beginning and 75.9 MB in the end (delta: -6.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:43,971 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.67 ms. Allocated memory is still 102.8 MB. Free memory was 75.9 MB in the beginning and 73.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:43,971 INFO L168 Benchmark]: Boogie Preprocessor took 98.57 ms. Allocated memory is still 102.8 MB. Free memory was 72.8 MB in the beginning and 71.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:43,972 INFO L168 Benchmark]: RCFGBuilder took 1026.13 ms. Allocated memory is still 102.8 MB. Free memory was 71.1 MB in the beginning and 72.2 MB in the end (delta: -1.1 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:43,972 INFO L168 Benchmark]: TraceAbstraction took 5462.70 ms. Allocated memory was 102.8 MB in the beginning and 157.3 MB in the end (delta: 54.5 MB). Free memory was 71.6 MB in the beginning and 92.5 MB in the end (delta: -20.9 MB). Peak memory consumption was 94.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:43,973 INFO L168 Benchmark]: Witness Printer took 4.11 ms. Allocated memory is still 157.3 MB. Free memory is still 92.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:21:43,975 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 73.4 MB. Free memory was 34.0 MB in the beginning and 34.0 MB in the end (delta: 67.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 517.15 ms. Allocated memory is still 102.8 MB. Free memory was 69.7 MB in the beginning and 75.9 MB in the end (delta: -6.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.67 ms. Allocated memory is still 102.8 MB. Free memory was 75.9 MB in the beginning and 73.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 98.57 ms. Allocated memory is still 102.8 MB. Free memory was 72.8 MB in the beginning and 71.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1026.13 ms. Allocated memory is still 102.8 MB. Free memory was 71.1 MB in the beginning and 72.2 MB in the end (delta: -1.1 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5462.70 ms. Allocated memory was 102.8 MB in the beginning and 157.3 MB in the end (delta: 54.5 MB). Free memory was 71.6 MB in the beginning and 92.5 MB in the end (delta: -20.9 MB). Peak memory consumption was 94.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.11 ms. Allocated memory is still 157.3 MB. Free memory is still 92.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseXor at line 357. Possible FailurePath: [L618] int __retres1 ; [L11] int s__info_callback = __VERIFIER_nondet_int(); [L12] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] unsigned int s__version = __VERIFIER_nondet_uint(); [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int(); [L20] int s__wbio = __VERIFIER_nondet_int(); [L21] int s__hit = __VERIFIER_nondet_int(); [L22] int s__rwstate ; [L23] int s__init_buf___0 ; [L24] int s__debug = __VERIFIER_nondet_int(); [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L27] unsigned int s__ctx__stats__sess_connect_renegotiate ; [L28] unsigned int s__ctx__stats__sess_connect ; [L29] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L30] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags ; [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 ; [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L54] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L55] int tmp___3 = __VERIFIER_nondet_int(); [L56] int tmp___4 = __VERIFIER_nondet_int(); [L57] int tmp___5 = __VERIFIER_nondet_int(); [L58] int tmp___6 = __VERIFIER_nondet_int(); [L59] int tmp___7 = __VERIFIER_nondet_int(); [L60] int tmp___8 = __VERIFIER_nondet_int(); [L61] int tmp___9 = __VERIFIER_nondet_int(); [L62] int blastFlag ; [L63] int ag_X ; [L64] int ag_Y = __VERIFIER_nondet_int(); [L65] int __retres59 ; [L68] s__state = 12292 [L69] blastFlag = 0 [L70] tmp = __VERIFIER_nondet_int() [L71] cb = 0 [L72] ret = -1 [L73] skip = 0 [L74] tmp___0 = 0 [L75] COND TRUE s__info_callback != 0 [L76] cb = s__info_callback [L84] s__in_handshake = s__in_handshake + 1 [L85] COND FALSE !(tmp___1 - 12288) [L95] COND TRUE 1 [L97] state = s__state [L98] COND TRUE s__state == 12292 [L201] s__new_session = 1 [L202] s__state = 4096 [L203] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L208] s__server = 0 [L209] COND TRUE cb != 0 [L214] COND FALSE !(s__version - 65280 != 768) [L220] s__type = 4096 [L221] COND FALSE !(s__init_buf___0 == 0) [L239] COND FALSE !(! tmp___4) [L245] COND FALSE !(! tmp___5) [L251] s__state = 4368 [L252] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L253] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND TRUE s__state == 4368 [L257] s__shutdown = 0 [L258] ret = __VERIFIER_nondet_int() [L259] COND TRUE blastFlag == 0 [L260] blastFlag = 1 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] s__init_num = 0 [L275] COND TRUE s__bbio != s__wbio [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND TRUE s__state == 4384 [L283] ret = __VERIFIER_nondet_int() [L284] COND TRUE blastFlag == 1 [L285] blastFlag = 2 [L289] COND FALSE !(ret <= 0) [L294] COND FALSE !(\read(s__hit)) [L297] s__state = 4400 [L299] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND TRUE s__state == 4400 [L303] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L306] ret = __VERIFIER_nondet_int() [L307] COND TRUE blastFlag == 2 [L308] blastFlag = 3 [L312] COND FALSE !(ret <= 0) [L318] s__state = 4416 [L319] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND TRUE s__state == 4416 [L323] ret = __VERIFIER_nondet_int() [L324] COND TRUE blastFlag == 3 [L325] blastFlag = 4 [L329] COND FALSE !(ret <= 0) [L334] s__state = 4432 [L335] ag_X = (unsigned short)65535 [L336] s__init_num = 0 [L337] COND FALSE !(! tmp___6) [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND FALSE !(s__state == 4416) [L134] COND FALSE !(s__state == 4417) [L137] COND TRUE s__state == 4432 [L346] ret = __VERIFIER_nondet_int() [L347] COND FALSE !(blastFlag == 5) [L352] COND FALSE !(ret <= 0) [L357] s__state = ag_X ^ ag_Y [L358] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND TRUE s__state == 4368 [L257] s__shutdown = 0 [L258] ret = __VERIFIER_nondet_int() [L259] COND FALSE !(blastFlag == 0) [L262] COND TRUE blastFlag == 4 [L263] blastFlag = 5 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] s__init_num = 0 [L275] COND TRUE s__bbio != s__wbio [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND TRUE s__state == 4384 [L283] ret = __VERIFIER_nondet_int() [L284] COND FALSE !(blastFlag == 1) [L289] COND FALSE !(ret <= 0) [L294] COND FALSE !(\read(s__hit)) [L297] s__state = 4400 [L299] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND TRUE s__state == 4400 [L303] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L306] ret = __VERIFIER_nondet_int() [L307] COND FALSE !(blastFlag == 2) [L312] COND FALSE !(ret <= 0) [L318] s__state = 4416 [L319] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND TRUE s__state == 4416 [L323] ret = __VERIFIER_nondet_int() [L324] COND FALSE !(blastFlag == 3) [L329] COND FALSE !(ret <= 0) [L334] s__state = 4432 [L335] ag_X = (unsigned short)65535 [L336] s__init_num = 0 [L337] COND FALSE !(! tmp___6) [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND FALSE !(s__state == 4416) [L134] COND FALSE !(s__state == 4417) [L137] COND TRUE s__state == 4432 [L346] ret = __VERIFIER_nondet_int() [L347] COND TRUE blastFlag == 5 [L3] __assert_fail("0", "s3_clnt_2.BV.c.cil-2a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 126 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.2s, OverallIterations: 15, TraceHistogramMax: 11, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2634 SDtfs, 812 SDslu, 1502 SDs, 0 SdLazy, 896 SolverSat, 173 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2323occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 93 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 1686 NumberOfCodeBlocks, 1686 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1476 ConstructedInterpolants, 0 QuantifiedInterpolants, 447550 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 2791/2791 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:21:46,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:21:46,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:21:46,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:21:46,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:21:46,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:21:46,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:21:46,839 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:21:46,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:21:46,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:21:46,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:21:46,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:21:46,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:21:46,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:21:46,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:21:46,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:21:46,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:21:46,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:21:46,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:21:46,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:21:46,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:21:46,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:21:46,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:21:46,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:21:46,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:21:46,903 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:21:46,903 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:21:46,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:21:46,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:21:46,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:21:46,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:21:46,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:21:46,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:21:46,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:21:46,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:21:46,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:21:46,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:21:46,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:21:46,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:21:46,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:21:46,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:21:46,918 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-28 03:21:46,946 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:21:46,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:21:46,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:21:46,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:21:46,952 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:21:46,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:21:46,952 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:21:46,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:21:46,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:21:46,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:21:46,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:21:46,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:21:46,954 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 03:21:46,955 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 03:21:46,955 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:21:46,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:21:46,955 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:21:46,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:21:46,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:21:46,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:21:46,956 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:21:46,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:21:46,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:21:46,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:21:46,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:21:46,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:21:46,958 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 03:21:46,958 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 03:21:46,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:21:46,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:21:46,959 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 03:21:46,959 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6995ed6ba91d7bb4325b7b2cb6cc1ca7ba7d3a61 [2020-11-28 03:21:47,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:21:47,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:21:47,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:21:47,514 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:21:47,515 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:21:47,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c [2020-11-28 03:21:47,598 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/data/88638abbd/0e78ca91482c42d19816d19baea96f8d/FLAGffe4d6337 [2020-11-28 03:21:48,192 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:21:48,193 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c [2020-11-28 03:21:48,214 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/data/88638abbd/0e78ca91482c42d19816d19baea96f8d/FLAGffe4d6337 [2020-11-28 03:21:48,495 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/data/88638abbd/0e78ca91482c42d19816d19baea96f8d [2020-11-28 03:21:48,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:21:48,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:21:48,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:21:48,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:21:48,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:21:48,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:21:48" (1/1) ... [2020-11-28 03:21:48,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b60de1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:48, skipping insertion in model container [2020-11-28 03:21:48,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:21:48" (1/1) ... [2020-11-28 03:21:48,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:21:48,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:21:48,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:21:48,938 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:21:48,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:21:49,051 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:21:49,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:49 WrapperNode [2020-11-28 03:21:49,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:21:49,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:21:49,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:21:49,054 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:21:49,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:49" (1/1) ... [2020-11-28 03:21:49,095 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:49" (1/1) ... [2020-11-28 03:21:49,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:21:49,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:21:49,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:21:49,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:21:49,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:49" (1/1) ... [2020-11-28 03:21:49,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:49" (1/1) ... [2020-11-28 03:21:49,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:49" (1/1) ... [2020-11-28 03:21:49,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:49" (1/1) ... [2020-11-28 03:21:49,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:49" (1/1) ... [2020-11-28 03:21:49,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:49" (1/1) ... [2020-11-28 03:21:49,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:49" (1/1) ... [2020-11-28 03:21:49,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:21:49,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:21:49,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:21:49,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:21:49,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:21:49,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 03:21:49,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:21:49,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:21:49,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:21:49,491 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-28 03:21:50,271 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-11-28 03:21:50,272 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-11-28 03:21:50,290 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:21:50,290 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 03:21:50,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:21:50 BoogieIcfgContainer [2020-11-28 03:21:50,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:21:50,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:21:50,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:21:50,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:21:50,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:21:48" (1/3) ... [2020-11-28 03:21:50,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13751f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:21:50, skipping insertion in model container [2020-11-28 03:21:50,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:49" (2/3) ... [2020-11-28 03:21:50,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13751f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:21:50, skipping insertion in model container [2020-11-28 03:21:50,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:21:50" (3/3) ... [2020-11-28 03:21:50,304 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.BV.c.cil-2a.c [2020-11-28 03:21:50,324 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:21:50,329 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:21:50,342 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:21:50,385 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:21:50,387 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:21:50,387 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:21:50,388 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:21:50,388 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:21:50,388 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:21:50,388 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:21:50,388 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:21:50,407 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states. [2020-11-28 03:21:50,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 03:21:50,414 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:50,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:50,415 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:50,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:50,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1457697026, now seen corresponding path program 1 times [2020-11-28 03:21:50,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:21:50,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911101741] [2020-11-28 03:21:50,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-28 03:21:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:50,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:21:50,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:50,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:50,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:21:50,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:50,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911101741] [2020-11-28 03:21:50,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:50,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 03:21:50,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413412196] [2020-11-28 03:21:50,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:21:50,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:21:50,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:21:50,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:50,645 INFO L87 Difference]: Start difference. First operand 126 states. Second operand 3 states. [2020-11-28 03:21:50,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:50,947 INFO L93 Difference]: Finished difference Result 247 states and 422 transitions. [2020-11-28 03:21:50,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:21:50,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-28 03:21:50,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:50,964 INFO L225 Difference]: With dead ends: 247 [2020-11-28 03:21:50,964 INFO L226 Difference]: Without dead ends: 112 [2020-11-28 03:21:50,969 INFO L677 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 [2020-11-28 03:21:50,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-11-28 03:21:51,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-11-28 03:21:51,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-28 03:21:51,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 169 transitions. [2020-11-28 03:21:51,034 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 169 transitions. Word has length 24 [2020-11-28 03:21:51,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:51,035 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 169 transitions. [2020-11-28 03:21:51,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:21:51,036 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 169 transitions. [2020-11-28 03:21:51,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-28 03:21:51,040 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:51,040 INFO L422 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] [2020-11-28 03:21:51,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 03:21:51,262 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:51,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:51,265 INFO L82 PathProgramCache]: Analyzing trace with hash -611475394, now seen corresponding path program 1 times [2020-11-28 03:21:51,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:21:51,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393403285] [2020-11-28 03:21:51,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-28 03:21:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:51,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:21:51,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:51,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:51,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:21:51,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:51,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393403285] [2020-11-28 03:21:51,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:51,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 03:21:51,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900786401] [2020-11-28 03:21:51,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:21:51,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:21:51,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:21:51,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:51,427 INFO L87 Difference]: Start difference. First operand 112 states and 169 transitions. Second operand 3 states. [2020-11-28 03:21:51,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:51,666 INFO L93 Difference]: Finished difference Result 233 states and 356 transitions. [2020-11-28 03:21:51,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:21:51,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-11-28 03:21:51,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:51,668 INFO L225 Difference]: With dead ends: 233 [2020-11-28 03:21:51,669 INFO L226 Difference]: Without dead ends: 131 [2020-11-28 03:21:51,670 INFO L677 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 [2020-11-28 03:21:51,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-28 03:21:51,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2020-11-28 03:21:51,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-11-28 03:21:51,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 189 transitions. [2020-11-28 03:21:51,683 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 189 transitions. Word has length 36 [2020-11-28 03:21:51,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:51,684 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 189 transitions. [2020-11-28 03:21:51,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:21:51,684 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 189 transitions. [2020-11-28 03:21:51,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-28 03:21:51,686 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:51,687 INFO L422 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] [2020-11-28 03:21:51,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 03:21:51,905 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:51,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:51,906 INFO L82 PathProgramCache]: Analyzing trace with hash 213639527, now seen corresponding path program 1 times [2020-11-28 03:21:51,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:21:51,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720548264] [2020-11-28 03:21:51,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-28 03:21:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:52,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:21:52,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:52,035 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 03:21:52,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:21:52,044 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 03:21:52,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720548264] [2020-11-28 03:21:52,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:52,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 03:21:52,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406029548] [2020-11-28 03:21:52,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:21:52,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:21:52,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:21:52,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:52,047 INFO L87 Difference]: Start difference. First operand 127 states and 189 transitions. Second operand 3 states. [2020-11-28 03:21:52,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:52,232 INFO L93 Difference]: Finished difference Result 265 states and 400 transitions. [2020-11-28 03:21:52,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:21:52,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-11-28 03:21:52,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:52,235 INFO L225 Difference]: With dead ends: 265 [2020-11-28 03:21:52,235 INFO L226 Difference]: Without dead ends: 148 [2020-11-28 03:21:52,236 INFO L677 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 [2020-11-28 03:21:52,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-11-28 03:21:52,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2020-11-28 03:21:52,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-11-28 03:21:52,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 211 transitions. [2020-11-28 03:21:52,251 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 211 transitions. Word has length 50 [2020-11-28 03:21:52,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:52,251 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 211 transitions. [2020-11-28 03:21:52,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:21:52,252 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 211 transitions. [2020-11-28 03:21:52,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-11-28 03:21:52,256 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:52,256 INFO L422 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] [2020-11-28 03:21:52,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 03:21:52,476 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:52,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:52,477 INFO L82 PathProgramCache]: Analyzing trace with hash 370823208, now seen corresponding path program 1 times [2020-11-28 03:21:52,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:21:52,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076085781] [2020-11-28 03:21:52,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-28 03:21:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:52,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:21:52,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:52,623 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-28 03:21:52,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:21:52,646 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-28 03:21:52,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076085781] [2020-11-28 03:21:52,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:52,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 03:21:52,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166331050] [2020-11-28 03:21:52,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:21:52,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:21:52,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:21:52,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:21:52,650 INFO L87 Difference]: Start difference. First operand 144 states and 211 transitions. Second operand 4 states. [2020-11-28 03:21:53,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:53,060 INFO L93 Difference]: Finished difference Result 349 states and 534 transitions. [2020-11-28 03:21:53,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:21:53,060 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-11-28 03:21:53,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:53,063 INFO L225 Difference]: With dead ends: 349 [2020-11-28 03:21:53,063 INFO L226 Difference]: Without dead ends: 215 [2020-11-28 03:21:53,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:21:53,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-11-28 03:21:53,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 207. [2020-11-28 03:21:53,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-11-28 03:21:53,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 297 transitions. [2020-11-28 03:21:53,080 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 297 transitions. Word has length 67 [2020-11-28 03:21:53,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:53,081 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 297 transitions. [2020-11-28 03:21:53,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:21:53,081 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 297 transitions. [2020-11-28 03:21:53,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-28 03:21:53,085 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:53,085 INFO L422 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, 1] [2020-11-28 03:21:53,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 03:21:53,298 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:53,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:53,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1528022105, now seen corresponding path program 1 times [2020-11-28 03:21:53,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:21:53,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1128125801] [2020-11-28 03:21:53,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-28 03:21:53,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:53,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:21:53,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:53,441 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-28 03:21:53,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:21:53,459 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-28 03:21:53,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1128125801] [2020-11-28 03:21:53,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:53,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 03:21:53,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893318996] [2020-11-28 03:21:53,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:21:53,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:21:53,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:21:53,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:53,463 INFO L87 Difference]: Start difference. First operand 207 states and 297 transitions. Second operand 3 states. [2020-11-28 03:21:53,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:53,702 INFO L93 Difference]: Finished difference Result 427 states and 620 transitions. [2020-11-28 03:21:53,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:21:53,703 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-11-28 03:21:53,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:53,705 INFO L225 Difference]: With dead ends: 427 [2020-11-28 03:21:53,705 INFO L226 Difference]: Without dead ends: 230 [2020-11-28 03:21:53,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:53,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-11-28 03:21:53,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 226. [2020-11-28 03:21:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-11-28 03:21:53,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 321 transitions. [2020-11-28 03:21:53,733 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 321 transitions. Word has length 68 [2020-11-28 03:21:53,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:53,737 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 321 transitions. [2020-11-28 03:21:53,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:21:53,738 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 321 transitions. [2020-11-28 03:21:53,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-28 03:21:53,743 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:53,743 INFO L422 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] [2020-11-28 03:21:53,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-28 03:21:53,949 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:53,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:53,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1678422895, now seen corresponding path program 1 times [2020-11-28 03:21:53,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:21:53,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318247671] [2020-11-28 03:21:53,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-28 03:21:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:54,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:21:54,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:54,101 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-11-28 03:21:54,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:21:54,115 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-11-28 03:21:54,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [318247671] [2020-11-28 03:21:54,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:54,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 03:21:54,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522170799] [2020-11-28 03:21:54,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:21:54,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:21:54,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:21:54,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:54,118 INFO L87 Difference]: Start difference. First operand 226 states and 321 transitions. Second operand 3 states. [2020-11-28 03:21:54,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:54,373 INFO L93 Difference]: Finished difference Result 466 states and 670 transitions. [2020-11-28 03:21:54,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:21:54,373 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-11-28 03:21:54,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:54,376 INFO L225 Difference]: With dead ends: 466 [2020-11-28 03:21:54,376 INFO L226 Difference]: Without dead ends: 250 [2020-11-28 03:21:54,377 INFO L677 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 [2020-11-28 03:21:54,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-11-28 03:21:54,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 247. [2020-11-28 03:21:54,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-11-28 03:21:54,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 347 transitions. [2020-11-28 03:21:54,388 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 347 transitions. Word has length 84 [2020-11-28 03:21:54,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:54,389 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 347 transitions. [2020-11-28 03:21:54,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:21:54,389 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 347 transitions. [2020-11-28 03:21:54,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-28 03:21:54,391 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:54,391 INFO L422 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] [2020-11-28 03:21:54,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-28 03:21:54,605 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:54,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:54,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1619803512, now seen corresponding path program 1 times [2020-11-28 03:21:54,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:21:54,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320666970] [2020-11-28 03:21:54,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-28 03:21:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:54,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:21:54,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:54,786 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-28 03:21:54,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:21:54,818 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-28 03:21:54,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320666970] [2020-11-28 03:21:54,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:54,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 03:21:54,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487680138] [2020-11-28 03:21:54,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:21:54,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:21:54,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:21:54,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:21:54,821 INFO L87 Difference]: Start difference. First operand 247 states and 347 transitions. Second operand 4 states. [2020-11-28 03:21:54,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:54,878 INFO L93 Difference]: Finished difference Result 743 states and 1042 transitions. [2020-11-28 03:21:54,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:21:54,879 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-11-28 03:21:54,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:54,884 INFO L225 Difference]: With dead ends: 743 [2020-11-28 03:21:54,884 INFO L226 Difference]: Without dead ends: 506 [2020-11-28 03:21:54,886 INFO L677 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 [2020-11-28 03:21:54,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-11-28 03:21:54,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2020-11-28 03:21:54,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2020-11-28 03:21:54,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 702 transitions. [2020-11-28 03:21:54,922 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 702 transitions. Word has length 103 [2020-11-28 03:21:54,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:54,922 INFO L481 AbstractCegarLoop]: Abstraction has 506 states and 702 transitions. [2020-11-28 03:21:54,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:21:54,923 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 702 transitions. [2020-11-28 03:21:54,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-28 03:21:54,931 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:54,931 INFO L422 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] [2020-11-28 03:21:55,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-28 03:21:55,148 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:55,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:55,148 INFO L82 PathProgramCache]: Analyzing trace with hash -847602632, now seen corresponding path program 1 times [2020-11-28 03:21:55,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:21:55,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606662346] [2020-11-28 03:21:55,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-28 03:21:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:55,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:21:55,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:55,291 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-11-28 03:21:55,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:21:55,308 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-11-28 03:21:55,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606662346] [2020-11-28 03:21:55,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:55,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 03:21:55,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370337552] [2020-11-28 03:21:55,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:21:55,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:21:55,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:21:55,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:55,311 INFO L87 Difference]: Start difference. First operand 506 states and 702 transitions. Second operand 3 states. [2020-11-28 03:21:55,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:55,368 INFO L93 Difference]: Finished difference Result 1023 states and 1418 transitions. [2020-11-28 03:21:55,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:21:55,370 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-11-28 03:21:55,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:55,377 INFO L225 Difference]: With dead ends: 1023 [2020-11-28 03:21:55,377 INFO L226 Difference]: Without dead ends: 527 [2020-11-28 03:21:55,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:55,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2020-11-28 03:21:55,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2020-11-28 03:21:55,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-11-28 03:21:55,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 729 transitions. [2020-11-28 03:21:55,404 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 729 transitions. Word has length 103 [2020-11-28 03:21:55,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:55,408 INFO L481 AbstractCegarLoop]: Abstraction has 527 states and 729 transitions. [2020-11-28 03:21:55,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:21:55,409 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 729 transitions. [2020-11-28 03:21:55,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-11-28 03:21:55,411 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:55,411 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:55,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-28 03:21:55,631 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:55,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:55,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1168582955, now seen corresponding path program 1 times [2020-11-28 03:21:55,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:21:55,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996462344] [2020-11-28 03:21:55,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-11-28 03:21:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:55,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:21:55,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:55,804 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-11-28 03:21:55,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:21:55,820 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-11-28 03:21:55,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996462344] [2020-11-28 03:21:55,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:55,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 03:21:55,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692048581] [2020-11-28 03:21:55,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:21:55,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:21:55,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:21:55,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:55,824 INFO L87 Difference]: Start difference. First operand 527 states and 729 transitions. Second operand 3 states. [2020-11-28 03:21:55,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:55,858 INFO L93 Difference]: Finished difference Result 1070 states and 1478 transitions. [2020-11-28 03:21:55,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:21:55,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2020-11-28 03:21:55,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:55,865 INFO L225 Difference]: With dead ends: 1070 [2020-11-28 03:21:55,865 INFO L226 Difference]: Without dead ends: 553 [2020-11-28 03:21:55,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:55,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-11-28 03:21:55,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2020-11-28 03:21:55,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-11-28 03:21:55,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 762 transitions. [2020-11-28 03:21:55,884 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 762 transitions. Word has length 104 [2020-11-28 03:21:55,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:55,885 INFO L481 AbstractCegarLoop]: Abstraction has 553 states and 762 transitions. [2020-11-28 03:21:55,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:21:55,885 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 762 transitions. [2020-11-28 03:21:55,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-11-28 03:21:55,887 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:55,887 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:56,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-28 03:21:56,107 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:56,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:56,107 INFO L82 PathProgramCache]: Analyzing trace with hash -53319870, now seen corresponding path program 1 times [2020-11-28 03:21:56,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:21:56,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916779620] [2020-11-28 03:21:56,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-11-28 03:21:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:56,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:21:56,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:56,260 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-11-28 03:21:56,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:21:56,286 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-11-28 03:21:56,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916779620] [2020-11-28 03:21:56,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:56,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 03:21:56,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421538348] [2020-11-28 03:21:56,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:21:56,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:21:56,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:21:56,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:21:56,289 INFO L87 Difference]: Start difference. First operand 553 states and 762 transitions. Second operand 4 states. [2020-11-28 03:21:56,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:56,400 INFO L93 Difference]: Finished difference Result 1520 states and 2113 transitions. [2020-11-28 03:21:56,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:21:56,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-11-28 03:21:56,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:56,406 INFO L225 Difference]: With dead ends: 1520 [2020-11-28 03:21:56,407 INFO L226 Difference]: Without dead ends: 1003 [2020-11-28 03:21:56,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:21:56,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2020-11-28 03:21:56,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 1003. [2020-11-28 03:21:56,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-11-28 03:21:56,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1392 transitions. [2020-11-28 03:21:56,442 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1392 transitions. Word has length 105 [2020-11-28 03:21:56,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:56,443 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1392 transitions. [2020-11-28 03:21:56,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:21:56,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1392 transitions. [2020-11-28 03:21:56,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-11-28 03:21:56,447 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:56,447 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:56,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-11-28 03:21:56,661 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:56,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:56,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1519363111, now seen corresponding path program 1 times [2020-11-28 03:21:56,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:21:56,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1591592416] [2020-11-28 03:21:56,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-11-28 03:21:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:56,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:21:56,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:56,908 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-11-28 03:21:56,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:21:56,969 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-11-28 03:21:56,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1591592416] [2020-11-28 03:21:56,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:56,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 03:21:56,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037862449] [2020-11-28 03:21:56,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:21:56,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:21:56,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:21:56,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:21:56,972 INFO L87 Difference]: Start difference. First operand 1003 states and 1392 transitions. Second operand 4 states. [2020-11-28 03:21:57,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:57,376 INFO L93 Difference]: Finished difference Result 2091 states and 2938 transitions. [2020-11-28 03:21:57,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:21:57,377 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2020-11-28 03:21:57,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:57,384 INFO L225 Difference]: With dead ends: 2091 [2020-11-28 03:21:57,385 INFO L226 Difference]: Without dead ends: 1124 [2020-11-28 03:21:57,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:21:57,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2020-11-28 03:21:57,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1095. [2020-11-28 03:21:57,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1095 states. [2020-11-28 03:21:57,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1500 transitions. [2020-11-28 03:21:57,474 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1500 transitions. Word has length 173 [2020-11-28 03:21:57,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:57,474 INFO L481 AbstractCegarLoop]: Abstraction has 1095 states and 1500 transitions. [2020-11-28 03:21:57,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:21:57,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1500 transitions. [2020-11-28 03:21:57,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-11-28 03:21:57,480 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:57,480 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:57,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-11-28 03:21:57,695 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:57,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:57,695 INFO L82 PathProgramCache]: Analyzing trace with hash -759567935, now seen corresponding path program 1 times [2020-11-28 03:21:57,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:21:57,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175603863] [2020-11-28 03:21:57,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-11-28 03:21:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:57,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:21:57,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-11-28 03:21:57,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:21:57,997 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-11-28 03:21:57,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175603863] [2020-11-28 03:21:57,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:57,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 03:21:57,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617473118] [2020-11-28 03:21:57,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:21:57,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:21:57,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:21:57,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:57,999 INFO L87 Difference]: Start difference. First operand 1095 states and 1500 transitions. Second operand 3 states. [2020-11-28 03:21:58,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:58,049 INFO L93 Difference]: Finished difference Result 2409 states and 3304 transitions. [2020-11-28 03:21:58,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:21:58,050 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2020-11-28 03:21:58,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:58,058 INFO L225 Difference]: With dead ends: 2409 [2020-11-28 03:21:58,058 INFO L226 Difference]: Without dead ends: 1350 [2020-11-28 03:21:58,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:58,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2020-11-28 03:21:58,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 1350. [2020-11-28 03:21:58,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1350 states. [2020-11-28 03:21:58,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 1847 transitions. [2020-11-28 03:21:58,120 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 1847 transitions. Word has length 194 [2020-11-28 03:21:58,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:58,120 INFO L481 AbstractCegarLoop]: Abstraction has 1350 states and 1847 transitions. [2020-11-28 03:21:58,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:21:58,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 1847 transitions. [2020-11-28 03:21:58,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-11-28 03:21:58,125 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:58,125 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:58,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-11-28 03:21:58,338 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:58,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:58,339 INFO L82 PathProgramCache]: Analyzing trace with hash 342847369, now seen corresponding path program 1 times [2020-11-28 03:21:58,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:21:58,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087620584] [2020-11-28 03:21:58,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-11-28 03:21:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:21:58,523 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:21:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:21:58,641 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:21:58,991 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-28 03:21:58,991 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:21:59,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-11-28 03:21:59,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:21:59 BoogieIcfgContainer [2020-11-28 03:21:59,376 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:21:59,376 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:21:59,376 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:21:59,377 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:21:59,377 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:21:50" (3/4) ... [2020-11-28 03:21:59,381 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:21:59,600 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_75b9f16d-70a1-43e6-ad18-5ccf0c98b418/bin/uautomizer/witness.graphml [2020-11-28 03:21:59,600 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:21:59,603 INFO L168 Benchmark]: Toolchain (without parser) took 11099.25 ms. Allocated memory was 50.3 MB in the beginning and 155.2 MB in the end (delta: 104.9 MB). Free memory was 27.0 MB in the beginning and 129.7 MB in the end (delta: -102.7 MB). Peak memory consumption was 88.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:59,604 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 50.3 MB. Free memory was 32.4 MB in the beginning and 32.4 MB in the end (delta: 22.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:21:59,604 INFO L168 Benchmark]: CACSL2BoogieTranslator took 544.41 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 26.8 MB in the beginning and 51.6 MB in the end (delta: -24.8 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:59,605 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.35 ms. Allocated memory is still 69.2 MB. Free memory was 51.6 MB in the beginning and 49.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:59,605 INFO L168 Benchmark]: Boogie Preprocessor took 83.97 ms. Allocated memory is still 69.2 MB. Free memory was 49.1 MB in the beginning and 47.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:59,606 INFO L168 Benchmark]: RCFGBuilder took 1062.58 ms. Allocated memory is still 69.2 MB. Free memory was 47.0 MB in the beginning and 44.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:59,606 INFO L168 Benchmark]: TraceAbstraction took 9079.24 ms. Allocated memory was 69.2 MB in the beginning and 155.2 MB in the end (delta: 86.0 MB). Free memory was 44.5 MB in the beginning and 63.4 MB in the end (delta: -18.9 MB). Peak memory consumption was 67.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:59,607 INFO L168 Benchmark]: Witness Printer took 224.38 ms. Allocated memory is still 155.2 MB. Free memory was 63.4 MB in the beginning and 129.7 MB in the end (delta: -66.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:59,609 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 50.3 MB. Free memory was 32.4 MB in the beginning and 32.4 MB in the end (delta: 22.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 544.41 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 26.8 MB in the beginning and 51.6 MB in the end (delta: -24.8 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.35 ms. Allocated memory is still 69.2 MB. Free memory was 51.6 MB in the beginning and 49.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 83.97 ms. Allocated memory is still 69.2 MB. Free memory was 49.1 MB in the beginning and 47.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1062.58 ms. Allocated memory is still 69.2 MB. Free memory was 47.0 MB in the beginning and 44.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9079.24 ms. Allocated memory was 69.2 MB in the beginning and 155.2 MB in the end (delta: 86.0 MB). Free memory was 44.5 MB in the beginning and 63.4 MB in the end (delta: -18.9 MB). Peak memory consumption was 67.1 MB. Max. memory is 16.1 GB. * Witness Printer took 224.38 ms. Allocated memory is still 155.2 MB. Free memory was 63.4 MB in the beginning and 129.7 MB in the end (delta: -66.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L618] int __retres1 ; [L11] int s__info_callback = __VERIFIER_nondet_int(); [L12] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] unsigned int s__version = __VERIFIER_nondet_uint(); [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int(); [L20] int s__wbio = __VERIFIER_nondet_int(); [L21] int s__hit = __VERIFIER_nondet_int(); [L22] int s__rwstate ; [L23] int s__init_buf___0 ; [L24] int s__debug = __VERIFIER_nondet_int(); [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L27] unsigned int s__ctx__stats__sess_connect_renegotiate ; [L28] unsigned int s__ctx__stats__sess_connect ; [L29] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L30] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags ; [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 ; [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L54] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L55] int tmp___3 = __VERIFIER_nondet_int(); [L56] int tmp___4 = __VERIFIER_nondet_int(); [L57] int tmp___5 = __VERIFIER_nondet_int(); [L58] int tmp___6 = __VERIFIER_nondet_int(); [L59] int tmp___7 = __VERIFIER_nondet_int(); [L60] int tmp___8 = __VERIFIER_nondet_int(); [L61] int tmp___9 = __VERIFIER_nondet_int(); [L62] int blastFlag ; [L63] int ag_X ; [L64] int ag_Y = __VERIFIER_nondet_int(); [L65] int __retres59 ; [L68] s__state = 12292 [L69] blastFlag = 0 [L70] tmp = __VERIFIER_nondet_int() [L71] cb = 0 [L72] ret = -1 [L73] skip = 0 [L74] tmp___0 = 0 [L75] COND TRUE s__info_callback != 0 [L76] cb = s__info_callback [L84] s__in_handshake = s__in_handshake + 1 [L85] COND FALSE !(tmp___1 - 12288) [L95] COND TRUE 1 [L97] state = s__state [L98] COND TRUE s__state == 12292 [L201] s__new_session = 1 [L202] s__state = 4096 [L203] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L208] s__server = 0 [L209] COND TRUE cb != 0 [L214] COND FALSE !(s__version - 65280 != 768) [L220] s__type = 4096 [L221] COND FALSE !(s__init_buf___0 == 0) [L239] COND FALSE !(! tmp___4) [L245] COND FALSE !(! tmp___5) [L251] s__state = 4368 [L252] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L253] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND TRUE s__state == 4368 [L257] s__shutdown = 0 [L258] ret = __VERIFIER_nondet_int() [L259] COND TRUE blastFlag == 0 [L260] blastFlag = 1 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] s__init_num = 0 [L275] COND TRUE s__bbio != s__wbio [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND TRUE s__state == 4384 [L283] ret = __VERIFIER_nondet_int() [L284] COND TRUE blastFlag == 1 [L285] blastFlag = 2 [L289] COND FALSE !(ret <= 0) [L294] COND FALSE !(\read(s__hit)) [L297] s__state = 4400 [L299] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND TRUE s__state == 4400 [L303] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L306] ret = __VERIFIER_nondet_int() [L307] COND TRUE blastFlag == 2 [L308] blastFlag = 3 [L312] COND FALSE !(ret <= 0) [L318] s__state = 4416 [L319] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND TRUE s__state == 4416 [L323] ret = __VERIFIER_nondet_int() [L324] COND TRUE blastFlag == 3 [L325] blastFlag = 4 [L329] COND FALSE !(ret <= 0) [L334] s__state = 4432 [L335] ag_X = (unsigned short)65535 [L336] s__init_num = 0 [L337] COND FALSE !(! tmp___6) [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND FALSE !(s__state == 4416) [L134] COND FALSE !(s__state == 4417) [L137] COND TRUE s__state == 4432 [L346] ret = __VERIFIER_nondet_int() [L347] COND FALSE !(blastFlag == 5) [L352] COND FALSE !(ret <= 0) [L357] s__state = ag_X ^ ag_Y [L358] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND TRUE s__state == 4368 [L257] s__shutdown = 0 [L258] ret = __VERIFIER_nondet_int() [L259] COND FALSE !(blastFlag == 0) [L262] COND TRUE blastFlag == 4 [L263] blastFlag = 5 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] s__init_num = 0 [L275] COND TRUE s__bbio != s__wbio [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND TRUE s__state == 4384 [L283] ret = __VERIFIER_nondet_int() [L284] COND FALSE !(blastFlag == 1) [L289] COND FALSE !(ret <= 0) [L294] COND FALSE !(\read(s__hit)) [L297] s__state = 4400 [L299] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND TRUE s__state == 4400 [L303] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L306] ret = __VERIFIER_nondet_int() [L307] COND FALSE !(blastFlag == 2) [L312] COND FALSE !(ret <= 0) [L318] s__state = 4416 [L319] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND TRUE s__state == 4416 [L323] ret = __VERIFIER_nondet_int() [L324] COND FALSE !(blastFlag == 3) [L329] COND FALSE !(ret <= 0) [L334] s__state = 4432 [L335] ag_X = (unsigned short)65535 [L336] s__init_num = 0 [L337] COND FALSE !(! tmp___6) [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND FALSE !(s__state == 4416) [L134] COND FALSE !(s__state == 4417) [L137] COND TRUE s__state == 4432 [L346] ret = __VERIFIER_nondet_int() [L347] COND TRUE blastFlag == 5 [L3] __assert_fail("0", "s3_clnt_2.BV.c.cil-2a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 126 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.8s, OverallIterations: 13, TraceHistogramMax: 11, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2289 SDtfs, 1139 SDslu, 1557 SDs, 0 SdLazy, 931 SolverSat, 167 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2198 GetRequests, 2182 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1350occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 52 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 1307 NumberOfCodeBlocks, 1307 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2198 ConstructedInterpolants, 0 QuantifiedInterpolants, 431278 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1930 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 24 InterpolantComputations, 24 PerfectInterpolantSequences, 3576/3576 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...