./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.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_304fa57b-1146-4b28-b8ac-c607beffd61a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_304fa57b-1146-4b28-b8ac-c607beffd61a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_304fa57b-1146-4b28-b8ac-c607beffd61a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_304fa57b-1146-4b28-b8ac-c607beffd61a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_304fa57b-1146-4b28-b8ac-c607beffd61a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_304fa57b-1146-4b28-b8ac-c607beffd61a/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 390f2eba6fdf8824b99921adcaaa6cdc728c2d2b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 03:13:59,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:13:59,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:13:59,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:13:59,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:13:59,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:13:59,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:13:59,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:13:59,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:14:00,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:14:00,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:14:00,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:14:00,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:14:00,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:14:00,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:14:00,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:14:00,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:14:00,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:14:00,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:14:00,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:14:00,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:14:00,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:14:00,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:14:00,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:14:00,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:14:00,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:14:00,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:14:00,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:14:00,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:14:00,048 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:14:00,048 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:14:00,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:14:00,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:14:00,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:14:00,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:14:00,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:14:00,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:14:00,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:14:00,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:14:00,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:14:00,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:14:00,056 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_304fa57b-1146-4b28-b8ac-c607beffd61a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:14:00,078 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:14:00,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:14:00,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:14:00,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:14:00,081 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:14:00,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:14:00,081 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:14:00,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:14:00,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:14:00,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:14:00,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:14:00,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:14:00,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:14:00,083 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:14:00,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:14:00,084 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:14:00,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:14:00,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:14:00,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:14:00,084 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:14:00,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:14:00,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:14:00,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:14:00,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:14:00,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:14:00,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:14:00,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:14:00,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:14:00,086 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:14:00,086 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_304fa57b-1146-4b28-b8ac-c607beffd61a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_304fa57b-1146-4b28-b8ac-c607beffd61a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 390f2eba6fdf8824b99921adcaaa6cdc728c2d2b [2020-11-28 03:14:00,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:14:00,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:14:00,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:14:00,499 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:14:00,500 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:14:00,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_304fa57b-1146-4b28-b8ac-c607beffd61a/bin/uautomizer/../../sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c [2020-11-28 03:14:00,570 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_304fa57b-1146-4b28-b8ac-c607beffd61a/bin/uautomizer/data/c510ac549/ca90c61347034b0eb671b801045aaac0/FLAGde1503f10 [2020-11-28 03:14:01,081 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:14:01,082 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_304fa57b-1146-4b28-b8ac-c607beffd61a/sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c [2020-11-28 03:14:01,094 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_304fa57b-1146-4b28-b8ac-c607beffd61a/bin/uautomizer/data/c510ac549/ca90c61347034b0eb671b801045aaac0/FLAGde1503f10 [2020-11-28 03:14:01,411 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_304fa57b-1146-4b28-b8ac-c607beffd61a/bin/uautomizer/data/c510ac549/ca90c61347034b0eb671b801045aaac0 [2020-11-28 03:14:01,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:14:01,415 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:14:01,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:14:01,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:14:01,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:14:01,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:14:01" (1/1) ... [2020-11-28 03:14:01,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d2473b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:01, skipping insertion in model container [2020-11-28 03:14:01,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:14:01" (1/1) ... [2020-11-28 03:14:01,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:14:01,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:14:01,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:14:01,832 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:14:01,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:14:01,915 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:14:01,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:01 WrapperNode [2020-11-28 03:14:01,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:14:01,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:14:01,917 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:14:01,917 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:14:01,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:01" (1/1) ... [2020-11-28 03:14:01,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:01" (1/1) ... [2020-11-28 03:14:01,992 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:14:01,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:14:01,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:14:01,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:14:02,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:01" (1/1) ... [2020-11-28 03:14:02,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:01" (1/1) ... [2020-11-28 03:14:02,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:01" (1/1) ... [2020-11-28 03:14:02,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:01" (1/1) ... [2020-11-28 03:14:02,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:01" (1/1) ... [2020-11-28 03:14:02,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:01" (1/1) ... [2020-11-28 03:14:02,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:01" (1/1) ... [2020-11-28 03:14:02,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:14:02,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:14:02,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:14:02,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:14:02,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_304fa57b-1146-4b28-b8ac-c607beffd61a/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 03:14:02,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:14:02,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:14:02,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:14:02,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:14:02,437 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-28 03:14:03,369 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-11-28 03:14:03,370 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-11-28 03:14:03,380 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:14:03,381 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 03:14:03,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:14:03 BoogieIcfgContainer [2020-11-28 03:14:03,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:14:03,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:14:03,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:14:03,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:14:03,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:14:01" (1/3) ... [2020-11-28 03:14:03,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343ad653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:14:03, skipping insertion in model container [2020-11-28 03:14:03,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:01" (2/3) ... [2020-11-28 03:14:03,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343ad653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:14:03, skipping insertion in model container [2020-11-28 03:14:03,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:14:03" (3/3) ... [2020-11-28 03:14:03,393 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_13.cil.c [2020-11-28 03:14:03,405 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:14:03,410 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:14:03,424 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:14:03,455 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:14:03,456 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:14:03,456 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:14:03,456 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:14:03,457 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:14:03,457 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:14:03,457 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:14:03,457 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:14:03,477 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states. [2020-11-28 03:14:03,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-28 03:14:03,483 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:03,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:03,484 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:03,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:03,490 INFO L82 PathProgramCache]: Analyzing trace with hash -651780530, now seen corresponding path program 1 times [2020-11-28 03:14:03,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:03,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361078557] [2020-11-28 03:14:03,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:03,735 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 03:14:03,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361078557] [2020-11-28 03:14:03,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:03,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:03,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938642018] [2020-11-28 03:14:03,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:03,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:03,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:03,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:03,770 INFO L87 Difference]: Start difference. First operand 154 states. Second operand 3 states. [2020-11-28 03:14:04,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:04,113 INFO L93 Difference]: Finished difference Result 326 states and 558 transitions. [2020-11-28 03:14:04,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:04,115 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-11-28 03:14:04,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:04,128 INFO L225 Difference]: With dead ends: 326 [2020-11-28 03:14:04,128 INFO L226 Difference]: Without dead ends: 160 [2020-11-28 03:14:04,133 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 03:14:04,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-11-28 03:14:04,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2020-11-28 03:14:04,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-11-28 03:14:04,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 249 transitions. [2020-11-28 03:14:04,189 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 249 transitions. Word has length 26 [2020-11-28 03:14:04,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:04,190 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 249 transitions. [2020-11-28 03:14:04,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:04,190 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 249 transitions. [2020-11-28 03:14:04,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 03:14:04,192 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:04,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:04,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:14:04,193 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:04,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:04,194 INFO L82 PathProgramCache]: Analyzing trace with hash 490720896, now seen corresponding path program 1 times [2020-11-28 03:14:04,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:04,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463088029] [2020-11-28 03:14:04,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:04,278 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 03:14:04,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463088029] [2020-11-28 03:14:04,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:04,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:04,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155750989] [2020-11-28 03:14:04,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:04,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:04,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:04,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:04,282 INFO L87 Difference]: Start difference. First operand 158 states and 249 transitions. Second operand 3 states. [2020-11-28 03:14:04,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:04,514 INFO L93 Difference]: Finished difference Result 330 states and 519 transitions. [2020-11-28 03:14:04,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:04,515 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-28 03:14:04,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:04,518 INFO L225 Difference]: With dead ends: 330 [2020-11-28 03:14:04,518 INFO L226 Difference]: Without dead ends: 180 [2020-11-28 03:14:04,520 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 03:14:04,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-11-28 03:14:04,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2020-11-28 03:14:04,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-11-28 03:14:04,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 279 transitions. [2020-11-28 03:14:04,558 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 279 transitions. Word has length 27 [2020-11-28 03:14:04,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:04,559 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 279 transitions. [2020-11-28 03:14:04,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:04,559 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 279 transitions. [2020-11-28 03:14:04,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 03:14:04,563 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:04,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:04,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:14:04,564 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:04,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:04,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1046842997, now seen corresponding path program 1 times [2020-11-28 03:14:04,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:04,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239735050] [2020-11-28 03:14:04,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:04,666 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 03:14:04,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239735050] [2020-11-28 03:14:04,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:04,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:04,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7691978] [2020-11-28 03:14:04,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:04,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:04,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:04,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:04,670 INFO L87 Difference]: Start difference. First operand 180 states and 279 transitions. Second operand 3 states. [2020-11-28 03:14:04,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:04,911 INFO L93 Difference]: Finished difference Result 360 states and 560 transitions. [2020-11-28 03:14:04,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:04,912 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-28 03:14:04,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:04,917 INFO L225 Difference]: With dead ends: 360 [2020-11-28 03:14:04,918 INFO L226 Difference]: Without dead ends: 188 [2020-11-28 03:14:04,919 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 03:14:04,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-11-28 03:14:04,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2020-11-28 03:14:04,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-11-28 03:14:04,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 290 transitions. [2020-11-28 03:14:04,941 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 290 transitions. Word has length 27 [2020-11-28 03:14:04,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:04,941 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 290 transitions. [2020-11-28 03:14:04,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:04,942 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 290 transitions. [2020-11-28 03:14:04,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 03:14:04,943 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:04,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:04,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:14:04,944 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:04,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:04,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1631613131, now seen corresponding path program 1 times [2020-11-28 03:14:04,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:04,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869440016] [2020-11-28 03:14:04,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:05,042 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 03:14:05,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869440016] [2020-11-28 03:14:05,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:05,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:05,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167806603] [2020-11-28 03:14:05,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:05,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:05,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:05,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:05,044 INFO L87 Difference]: Start difference. First operand 186 states and 290 transitions. Second operand 3 states. [2020-11-28 03:14:05,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:05,276 INFO L93 Difference]: Finished difference Result 365 states and 570 transitions. [2020-11-28 03:14:05,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:05,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-28 03:14:05,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:05,279 INFO L225 Difference]: With dead ends: 365 [2020-11-28 03:14:05,279 INFO L226 Difference]: Without dead ends: 187 [2020-11-28 03:14:05,280 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 03:14:05,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-11-28 03:14:05,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2020-11-28 03:14:05,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-11-28 03:14:05,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 291 transitions. [2020-11-28 03:14:05,294 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 291 transitions. Word has length 27 [2020-11-28 03:14:05,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:05,295 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 291 transitions. [2020-11-28 03:14:05,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:05,295 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 291 transitions. [2020-11-28 03:14:05,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-28 03:14:05,297 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:05,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:05,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:14:05,298 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:05,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:05,299 INFO L82 PathProgramCache]: Analyzing trace with hash -431278894, now seen corresponding path program 1 times [2020-11-28 03:14:05,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:05,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348767068] [2020-11-28 03:14:05,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:05,366 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 03:14:05,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348767068] [2020-11-28 03:14:05,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:05,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:05,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19030748] [2020-11-28 03:14:05,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:05,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:05,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:05,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:05,369 INFO L87 Difference]: Start difference. First operand 187 states and 291 transitions. Second operand 3 states. [2020-11-28 03:14:05,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:05,584 INFO L93 Difference]: Finished difference Result 376 states and 582 transitions. [2020-11-28 03:14:05,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:05,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-11-28 03:14:05,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:05,587 INFO L225 Difference]: With dead ends: 376 [2020-11-28 03:14:05,587 INFO L226 Difference]: Without dead ends: 197 [2020-11-28 03:14:05,588 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 03:14:05,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-11-28 03:14:05,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 187. [2020-11-28 03:14:05,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-11-28 03:14:05,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 289 transitions. [2020-11-28 03:14:05,627 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 289 transitions. Word has length 28 [2020-11-28 03:14:05,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:05,628 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 289 transitions. [2020-11-28 03:14:05,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:05,628 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 289 transitions. [2020-11-28 03:14:05,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-28 03:14:05,633 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:05,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:05,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:14:05,634 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:05,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:05,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1682017785, now seen corresponding path program 1 times [2020-11-28 03:14:05,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:05,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234450938] [2020-11-28 03:14:05,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:05,709 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 03:14:05,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234450938] [2020-11-28 03:14:05,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:05,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:05,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672075070] [2020-11-28 03:14:05,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:05,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:05,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:05,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:05,712 INFO L87 Difference]: Start difference. First operand 187 states and 289 transitions. Second operand 3 states. [2020-11-28 03:14:05,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:05,913 INFO L93 Difference]: Finished difference Result 376 states and 578 transitions. [2020-11-28 03:14:05,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:05,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-11-28 03:14:05,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:05,914 INFO L225 Difference]: With dead ends: 376 [2020-11-28 03:14:05,915 INFO L226 Difference]: Without dead ends: 197 [2020-11-28 03:14:05,915 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 03:14:05,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-11-28 03:14:05,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 187. [2020-11-28 03:14:05,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-11-28 03:14:05,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 287 transitions. [2020-11-28 03:14:05,928 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 287 transitions. Word has length 29 [2020-11-28 03:14:05,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:05,929 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 287 transitions. [2020-11-28 03:14:05,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:05,929 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 287 transitions. [2020-11-28 03:14:05,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 03:14:05,937 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:05,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:05,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:14:05,938 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:05,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:05,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1452653961, now seen corresponding path program 1 times [2020-11-28 03:14:05,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:05,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96768647] [2020-11-28 03:14:05,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:06,021 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 03:14:06,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96768647] [2020-11-28 03:14:06,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:06,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:06,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683702721] [2020-11-28 03:14:06,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:06,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:06,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:06,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:06,024 INFO L87 Difference]: Start difference. First operand 187 states and 287 transitions. Second operand 3 states. [2020-11-28 03:14:06,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:06,215 INFO L93 Difference]: Finished difference Result 376 states and 574 transitions. [2020-11-28 03:14:06,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:06,218 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-11-28 03:14:06,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:06,220 INFO L225 Difference]: With dead ends: 376 [2020-11-28 03:14:06,220 INFO L226 Difference]: Without dead ends: 197 [2020-11-28 03:14:06,221 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 03:14:06,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-11-28 03:14:06,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 187. [2020-11-28 03:14:06,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-11-28 03:14:06,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 285 transitions. [2020-11-28 03:14:06,234 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 285 transitions. Word has length 30 [2020-11-28 03:14:06,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:06,237 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 285 transitions. [2020-11-28 03:14:06,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:06,237 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 285 transitions. [2020-11-28 03:14:06,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 03:14:06,238 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:06,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:06,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:14:06,239 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:06,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:06,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1026970664, now seen corresponding path program 1 times [2020-11-28 03:14:06,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:06,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665422751] [2020-11-28 03:14:06,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:06,337 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 03:14:06,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665422751] [2020-11-28 03:14:06,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:06,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:14:06,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663240629] [2020-11-28 03:14:06,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:14:06,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:06,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:14:06,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:14:06,340 INFO L87 Difference]: Start difference. First operand 187 states and 285 transitions. Second operand 4 states. [2020-11-28 03:14:06,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:06,756 INFO L93 Difference]: Finished difference Result 572 states and 871 transitions. [2020-11-28 03:14:06,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:14:06,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-11-28 03:14:06,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:06,759 INFO L225 Difference]: With dead ends: 572 [2020-11-28 03:14:06,759 INFO L226 Difference]: Without dead ends: 393 [2020-11-28 03:14:06,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:14:06,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-11-28 03:14:06,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 357. [2020-11-28 03:14:06,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-11-28 03:14:06,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 543 transitions. [2020-11-28 03:14:06,788 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 543 transitions. Word has length 30 [2020-11-28 03:14:06,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:06,788 INFO L481 AbstractCegarLoop]: Abstraction has 357 states and 543 transitions. [2020-11-28 03:14:06,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:14:06,789 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 543 transitions. [2020-11-28 03:14:06,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-28 03:14:06,790 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:06,791 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:06,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:14:06,791 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:06,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:06,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1801233473, now seen corresponding path program 1 times [2020-11-28 03:14:06,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:06,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110002720] [2020-11-28 03:14:06,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:06,870 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 03:14:06,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110002720] [2020-11-28 03:14:06,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:06,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:06,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72512451] [2020-11-28 03:14:06,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:06,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:06,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:06,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:06,872 INFO L87 Difference]: Start difference. First operand 357 states and 543 transitions. Second operand 3 states. [2020-11-28 03:14:07,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:07,121 INFO L93 Difference]: Finished difference Result 781 states and 1197 transitions. [2020-11-28 03:14:07,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:07,122 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-11-28 03:14:07,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:07,126 INFO L225 Difference]: With dead ends: 781 [2020-11-28 03:14:07,126 INFO L226 Difference]: Without dead ends: 432 [2020-11-28 03:14:07,127 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 03:14:07,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-11-28 03:14:07,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 412. [2020-11-28 03:14:07,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-11-28 03:14:07,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 630 transitions. [2020-11-28 03:14:07,153 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 630 transitions. Word has length 33 [2020-11-28 03:14:07,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:07,154 INFO L481 AbstractCegarLoop]: Abstraction has 412 states and 630 transitions. [2020-11-28 03:14:07,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:07,154 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 630 transitions. [2020-11-28 03:14:07,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-28 03:14:07,156 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:07,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:07,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 03:14:07,157 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:07,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:07,159 INFO L82 PathProgramCache]: Analyzing trace with hash -979083784, now seen corresponding path program 1 times [2020-11-28 03:14:07,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:07,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133447481] [2020-11-28 03:14:07,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:07,227 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 03:14:07,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133447481] [2020-11-28 03:14:07,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:07,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:07,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734220035] [2020-11-28 03:14:07,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:07,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:07,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:07,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:07,230 INFO L87 Difference]: Start difference. First operand 412 states and 630 transitions. Second operand 3 states. [2020-11-28 03:14:07,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:07,474 INFO L93 Difference]: Finished difference Result 858 states and 1321 transitions. [2020-11-28 03:14:07,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:07,475 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-11-28 03:14:07,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:07,481 INFO L225 Difference]: With dead ends: 858 [2020-11-28 03:14:07,483 INFO L226 Difference]: Without dead ends: 454 [2020-11-28 03:14:07,484 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 03:14:07,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-11-28 03:14:07,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 434. [2020-11-28 03:14:07,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2020-11-28 03:14:07,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 670 transitions. [2020-11-28 03:14:07,508 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 670 transitions. Word has length 34 [2020-11-28 03:14:07,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:07,508 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 670 transitions. [2020-11-28 03:14:07,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:07,509 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 670 transitions. [2020-11-28 03:14:07,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-28 03:14:07,510 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:07,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:07,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 03:14:07,511 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:07,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:07,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1380253332, now seen corresponding path program 1 times [2020-11-28 03:14:07,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:07,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312043490] [2020-11-28 03:14:07,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:07,567 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 03:14:07,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312043490] [2020-11-28 03:14:07,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:07,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:07,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176107473] [2020-11-28 03:14:07,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:07,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:07,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:07,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:07,569 INFO L87 Difference]: Start difference. First operand 434 states and 670 transitions. Second operand 3 states. [2020-11-28 03:14:07,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:07,877 INFO L93 Difference]: Finished difference Result 925 states and 1433 transitions. [2020-11-28 03:14:07,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:07,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-11-28 03:14:07,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:07,882 INFO L225 Difference]: With dead ends: 925 [2020-11-28 03:14:07,882 INFO L226 Difference]: Without dead ends: 499 [2020-11-28 03:14:07,884 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 03:14:07,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-11-28 03:14:07,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 489. [2020-11-28 03:14:07,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-11-28 03:14:07,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 760 transitions. [2020-11-28 03:14:07,919 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 760 transitions. Word has length 40 [2020-11-28 03:14:07,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:07,920 INFO L481 AbstractCegarLoop]: Abstraction has 489 states and 760 transitions. [2020-11-28 03:14:07,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:07,920 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 760 transitions. [2020-11-28 03:14:07,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-28 03:14:07,921 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:07,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:07,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 03:14:07,922 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:07,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:07,923 INFO L82 PathProgramCache]: Analyzing trace with hash -168828106, now seen corresponding path program 1 times [2020-11-28 03:14:07,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:07,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139565292] [2020-11-28 03:14:07,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:07,977 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 03:14:07,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139565292] [2020-11-28 03:14:07,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:07,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:07,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722820341] [2020-11-28 03:14:07,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:07,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:07,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:07,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:07,980 INFO L87 Difference]: Start difference. First operand 489 states and 760 transitions. Second operand 3 states. [2020-11-28 03:14:08,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:08,286 INFO L93 Difference]: Finished difference Result 992 states and 1545 transitions. [2020-11-28 03:14:08,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:08,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-11-28 03:14:08,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:08,292 INFO L225 Difference]: With dead ends: 992 [2020-11-28 03:14:08,292 INFO L226 Difference]: Without dead ends: 511 [2020-11-28 03:14:08,294 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 03:14:08,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2020-11-28 03:14:08,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 501. [2020-11-28 03:14:08,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2020-11-28 03:14:08,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 782 transitions. [2020-11-28 03:14:08,322 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 782 transitions. Word has length 41 [2020-11-28 03:14:08,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:08,322 INFO L481 AbstractCegarLoop]: Abstraction has 501 states and 782 transitions. [2020-11-28 03:14:08,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:08,322 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 782 transitions. [2020-11-28 03:14:08,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-28 03:14:08,324 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:08,324 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-28 03:14:08,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-28 03:14:08,325 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:08,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:08,326 INFO L82 PathProgramCache]: Analyzing trace with hash -2051620392, now seen corresponding path program 1 times [2020-11-28 03:14:08,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:08,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803697141] [2020-11-28 03:14:08,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:08,407 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:14:08,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803697141] [2020-11-28 03:14:08,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:08,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:08,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529305513] [2020-11-28 03:14:08,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:08,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:08,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:08,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:08,410 INFO L87 Difference]: Start difference. First operand 501 states and 782 transitions. Second operand 3 states. [2020-11-28 03:14:08,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:08,661 INFO L93 Difference]: Finished difference Result 1008 states and 1575 transitions. [2020-11-28 03:14:08,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:08,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-11-28 03:14:08,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:08,666 INFO L225 Difference]: With dead ends: 1008 [2020-11-28 03:14:08,666 INFO L226 Difference]: Without dead ends: 515 [2020-11-28 03:14:08,667 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 03:14:08,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2020-11-28 03:14:08,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 501. [2020-11-28 03:14:08,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2020-11-28 03:14:08,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 778 transitions. [2020-11-28 03:14:08,693 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 778 transitions. Word has length 61 [2020-11-28 03:14:08,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:08,693 INFO L481 AbstractCegarLoop]: Abstraction has 501 states and 778 transitions. [2020-11-28 03:14:08,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:08,694 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 778 transitions. [2020-11-28 03:14:08,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-11-28 03:14:08,695 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:08,696 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-28 03:14:08,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-28 03:14:08,696 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:08,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:08,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1852313784, now seen corresponding path program 1 times [2020-11-28 03:14:08,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:08,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164271927] [2020-11-28 03:14:08,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:08,730 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:14:08,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164271927] [2020-11-28 03:14:08,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:08,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:08,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92380579] [2020-11-28 03:14:08,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:08,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:08,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:08,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:08,733 INFO L87 Difference]: Start difference. First operand 501 states and 778 transitions. Second operand 3 states. [2020-11-28 03:14:08,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:08,986 INFO L93 Difference]: Finished difference Result 1032 states and 1601 transitions. [2020-11-28 03:14:08,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:08,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-11-28 03:14:08,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:08,990 INFO L225 Difference]: With dead ends: 1032 [2020-11-28 03:14:08,990 INFO L226 Difference]: Without dead ends: 539 [2020-11-28 03:14:08,993 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 03:14:08,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2020-11-28 03:14:09,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2020-11-28 03:14:09,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-11-28 03:14:09,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 832 transitions. [2020-11-28 03:14:09,020 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 832 transitions. Word has length 62 [2020-11-28 03:14:09,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:09,021 INFO L481 AbstractCegarLoop]: Abstraction has 539 states and 832 transitions. [2020-11-28 03:14:09,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:09,021 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 832 transitions. [2020-11-28 03:14:09,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-11-28 03:14:09,022 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:09,023 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:09,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-28 03:14:09,023 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:09,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:09,024 INFO L82 PathProgramCache]: Analyzing trace with hash 932372046, now seen corresponding path program 1 times [2020-11-28 03:14:09,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:09,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494404730] [2020-11-28 03:14:09,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:09,075 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:14:09,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494404730] [2020-11-28 03:14:09,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:09,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:09,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7203708] [2020-11-28 03:14:09,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:09,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:09,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:09,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:09,078 INFO L87 Difference]: Start difference. First operand 539 states and 832 transitions. Second operand 3 states. [2020-11-28 03:14:09,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:09,324 INFO L93 Difference]: Finished difference Result 1112 states and 1713 transitions. [2020-11-28 03:14:09,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:09,325 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-11-28 03:14:09,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:09,330 INFO L225 Difference]: With dead ends: 1112 [2020-11-28 03:14:09,330 INFO L226 Difference]: Without dead ends: 581 [2020-11-28 03:14:09,334 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 03:14:09,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-11-28 03:14:09,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 571. [2020-11-28 03:14:09,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-11-28 03:14:09,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 874 transitions. [2020-11-28 03:14:09,366 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 874 transitions. Word has length 62 [2020-11-28 03:14:09,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:09,366 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 874 transitions. [2020-11-28 03:14:09,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:09,367 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 874 transitions. [2020-11-28 03:14:09,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-11-28 03:14:09,368 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:09,369 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-11-28 03:14:09,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-28 03:14:09,369 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:09,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:09,370 INFO L82 PathProgramCache]: Analyzing trace with hash -394487435, now seen corresponding path program 1 times [2020-11-28 03:14:09,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:09,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024699084] [2020-11-28 03:14:09,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:09,415 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:14:09,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024699084] [2020-11-28 03:14:09,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:09,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:09,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114638537] [2020-11-28 03:14:09,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:09,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:09,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:09,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:09,421 INFO L87 Difference]: Start difference. First operand 571 states and 874 transitions. Second operand 3 states. [2020-11-28 03:14:09,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:09,670 INFO L93 Difference]: Finished difference Result 1144 states and 1750 transitions. [2020-11-28 03:14:09,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:09,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-11-28 03:14:09,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:09,675 INFO L225 Difference]: With dead ends: 1144 [2020-11-28 03:14:09,675 INFO L226 Difference]: Without dead ends: 581 [2020-11-28 03:14:09,676 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 03:14:09,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-11-28 03:14:09,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 571. [2020-11-28 03:14:09,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-11-28 03:14:09,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 869 transitions. [2020-11-28 03:14:09,709 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 869 transitions. Word has length 63 [2020-11-28 03:14:09,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:09,709 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 869 transitions. [2020-11-28 03:14:09,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:09,710 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 869 transitions. [2020-11-28 03:14:09,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-11-28 03:14:09,711 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:09,711 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:09,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-28 03:14:09,712 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:09,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:09,713 INFO L82 PathProgramCache]: Analyzing trace with hash 408970087, now seen corresponding path program 1 times [2020-11-28 03:14:09,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:09,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144178768] [2020-11-28 03:14:09,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:09,771 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:14:09,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144178768] [2020-11-28 03:14:09,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:09,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:09,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570187814] [2020-11-28 03:14:09,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:09,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:09,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:09,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:09,773 INFO L87 Difference]: Start difference. First operand 571 states and 869 transitions. Second operand 3 states. [2020-11-28 03:14:10,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:10,036 INFO L93 Difference]: Finished difference Result 1181 states and 1794 transitions. [2020-11-28 03:14:10,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:10,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-11-28 03:14:10,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:10,041 INFO L225 Difference]: With dead ends: 1181 [2020-11-28 03:14:10,041 INFO L226 Difference]: Without dead ends: 618 [2020-11-28 03:14:10,043 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 03:14:10,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-11-28 03:14:10,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 614. [2020-11-28 03:14:10,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2020-11-28 03:14:10,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 930 transitions. [2020-11-28 03:14:10,075 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 930 transitions. Word has length 74 [2020-11-28 03:14:10,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:10,075 INFO L481 AbstractCegarLoop]: Abstraction has 614 states and 930 transitions. [2020-11-28 03:14:10,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:10,075 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 930 transitions. [2020-11-28 03:14:10,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-11-28 03:14:10,077 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:10,077 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:10,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-28 03:14:10,078 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:10,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:10,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1646674903, now seen corresponding path program 1 times [2020-11-28 03:14:10,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:10,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765364607] [2020-11-28 03:14:10,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:10,114 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:14:10,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765364607] [2020-11-28 03:14:10,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:10,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:10,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082280442] [2020-11-28 03:14:10,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:10,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:10,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:10,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:10,124 INFO L87 Difference]: Start difference. First operand 614 states and 930 transitions. Second operand 3 states. [2020-11-28 03:14:10,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:10,422 INFO L93 Difference]: Finished difference Result 1224 states and 1852 transitions. [2020-11-28 03:14:10,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:10,423 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-11-28 03:14:10,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:10,427 INFO L225 Difference]: With dead ends: 1224 [2020-11-28 03:14:10,427 INFO L226 Difference]: Without dead ends: 618 [2020-11-28 03:14:10,429 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 03:14:10,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-11-28 03:14:10,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 614. [2020-11-28 03:14:10,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2020-11-28 03:14:10,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 927 transitions. [2020-11-28 03:14:10,465 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 927 transitions. Word has length 75 [2020-11-28 03:14:10,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:10,466 INFO L481 AbstractCegarLoop]: Abstraction has 614 states and 927 transitions. [2020-11-28 03:14:10,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:10,466 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 927 transitions. [2020-11-28 03:14:10,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-28 03:14:10,468 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:10,468 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:10,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-28 03:14:10,469 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:10,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:10,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1588112316, now seen corresponding path program 1 times [2020-11-28 03:14:10,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:10,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794573844] [2020-11-28 03:14:10,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:10,506 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-11-28 03:14:10,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794573844] [2020-11-28 03:14:10,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:10,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:10,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003087735] [2020-11-28 03:14:10,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:10,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:10,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:10,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:10,509 INFO L87 Difference]: Start difference. First operand 614 states and 927 transitions. Second operand 3 states. [2020-11-28 03:14:10,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:10,751 INFO L93 Difference]: Finished difference Result 1256 states and 1895 transitions. [2020-11-28 03:14:10,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:10,752 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-11-28 03:14:10,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:10,756 INFO L225 Difference]: With dead ends: 1256 [2020-11-28 03:14:10,757 INFO L226 Difference]: Without dead ends: 650 [2020-11-28 03:14:10,758 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 03:14:10,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2020-11-28 03:14:10,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 642. [2020-11-28 03:14:10,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-11-28 03:14:10,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 961 transitions. [2020-11-28 03:14:10,824 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 961 transitions. Word has length 84 [2020-11-28 03:14:10,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:10,824 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 961 transitions. [2020-11-28 03:14:10,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:10,825 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 961 transitions. [2020-11-28 03:14:10,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-28 03:14:10,827 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:10,827 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:10,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-28 03:14:10,828 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:10,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:10,829 INFO L82 PathProgramCache]: Analyzing trace with hash 474906507, now seen corresponding path program 1 times [2020-11-28 03:14:10,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:10,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104334942] [2020-11-28 03:14:10,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:10,886 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-11-28 03:14:10,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104334942] [2020-11-28 03:14:10,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:10,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:10,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898956420] [2020-11-28 03:14:10,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:10,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:10,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:10,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:10,889 INFO L87 Difference]: Start difference. First operand 642 states and 961 transitions. Second operand 3 states. [2020-11-28 03:14:11,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:11,150 INFO L93 Difference]: Finished difference Result 1284 states and 1922 transitions. [2020-11-28 03:14:11,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:11,151 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-11-28 03:14:11,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:11,156 INFO L225 Difference]: With dead ends: 1284 [2020-11-28 03:14:11,156 INFO L226 Difference]: Without dead ends: 650 [2020-11-28 03:14:11,158 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 03:14:11,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2020-11-28 03:14:11,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 642. [2020-11-28 03:14:11,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-11-28 03:14:11,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 954 transitions. [2020-11-28 03:14:11,196 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 954 transitions. Word has length 85 [2020-11-28 03:14:11,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:11,196 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 954 transitions. [2020-11-28 03:14:11,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:11,197 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 954 transitions. [2020-11-28 03:14:11,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-28 03:14:11,199 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:11,199 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:11,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-28 03:14:11,200 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:11,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:11,200 INFO L82 PathProgramCache]: Analyzing trace with hash -282694335, now seen corresponding path program 1 times [2020-11-28 03:14:11,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:11,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038994362] [2020-11-28 03:14:11,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:11,239 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-11-28 03:14:11,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038994362] [2020-11-28 03:14:11,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:11,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:11,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656708083] [2020-11-28 03:14:11,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:11,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:11,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:11,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:11,242 INFO L87 Difference]: Start difference. First operand 642 states and 954 transitions. Second operand 3 states. [2020-11-28 03:14:11,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:11,549 INFO L93 Difference]: Finished difference Result 1316 states and 1949 transitions. [2020-11-28 03:14:11,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:11,549 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-11-28 03:14:11,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:11,554 INFO L225 Difference]: With dead ends: 1316 [2020-11-28 03:14:11,555 INFO L226 Difference]: Without dead ends: 682 [2020-11-28 03:14:11,556 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 03:14:11,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-11-28 03:14:11,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 678. [2020-11-28 03:14:11,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-11-28 03:14:11,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 998 transitions. [2020-11-28 03:14:11,591 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 998 transitions. Word has length 89 [2020-11-28 03:14:11,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:11,591 INFO L481 AbstractCegarLoop]: Abstraction has 678 states and 998 transitions. [2020-11-28 03:14:11,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:11,592 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 998 transitions. [2020-11-28 03:14:11,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-11-28 03:14:11,594 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:11,594 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:11,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-28 03:14:11,595 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:11,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:11,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1446327258, now seen corresponding path program 1 times [2020-11-28 03:14:11,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:11,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348805696] [2020-11-28 03:14:11,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:11,634 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-11-28 03:14:11,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348805696] [2020-11-28 03:14:11,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:11,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:11,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262772533] [2020-11-28 03:14:11,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:11,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:11,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:11,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:11,636 INFO L87 Difference]: Start difference. First operand 678 states and 998 transitions. Second operand 3 states. [2020-11-28 03:14:11,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:11,902 INFO L93 Difference]: Finished difference Result 1352 states and 1988 transitions. [2020-11-28 03:14:11,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:11,903 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-11-28 03:14:11,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:11,908 INFO L225 Difference]: With dead ends: 1352 [2020-11-28 03:14:11,908 INFO L226 Difference]: Without dead ends: 682 [2020-11-28 03:14:11,909 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 03:14:11,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-11-28 03:14:11,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 678. [2020-11-28 03:14:11,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-11-28 03:14:11,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 993 transitions. [2020-11-28 03:14:11,945 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 993 transitions. Word has length 90 [2020-11-28 03:14:11,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:11,945 INFO L481 AbstractCegarLoop]: Abstraction has 678 states and 993 transitions. [2020-11-28 03:14:11,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:11,945 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 993 transitions. [2020-11-28 03:14:11,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-28 03:14:11,948 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:11,948 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1] [2020-11-28 03:14:11,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-28 03:14:11,948 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:11,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:11,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1209412422, now seen corresponding path program 1 times [2020-11-28 03:14:11,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:11,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551693055] [2020-11-28 03:14:11,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:11,996 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-11-28 03:14:11,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551693055] [2020-11-28 03:14:11,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:11,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:11,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310573478] [2020-11-28 03:14:11,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:11,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:11,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:11,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:11,999 INFO L87 Difference]: Start difference. First operand 678 states and 993 transitions. Second operand 3 states. [2020-11-28 03:14:12,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:12,086 INFO L93 Difference]: Finished difference Result 2004 states and 2929 transitions. [2020-11-28 03:14:12,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:12,087 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2020-11-28 03:14:12,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:12,096 INFO L225 Difference]: With dead ends: 2004 [2020-11-28 03:14:12,096 INFO L226 Difference]: Without dead ends: 1334 [2020-11-28 03:14:12,098 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 03:14:12,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2020-11-28 03:14:12,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 680. [2020-11-28 03:14:12,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 680 states. [2020-11-28 03:14:12,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 995 transitions. [2020-11-28 03:14:12,148 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 995 transitions. Word has length 101 [2020-11-28 03:14:12,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:12,148 INFO L481 AbstractCegarLoop]: Abstraction has 680 states and 995 transitions. [2020-11-28 03:14:12,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:12,148 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 995 transitions. [2020-11-28 03:14:12,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-28 03:14:12,151 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:12,151 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1] [2020-11-28 03:14:12,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-28 03:14:12,151 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:12,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:12,152 INFO L82 PathProgramCache]: Analyzing trace with hash -70451256, now seen corresponding path program 1 times [2020-11-28 03:14:12,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:12,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801799617] [2020-11-28 03:14:12,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:12,214 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-11-28 03:14:12,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801799617] [2020-11-28 03:14:12,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:12,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:12,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616504151] [2020-11-28 03:14:12,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:12,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:12,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:12,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:12,220 INFO L87 Difference]: Start difference. First operand 680 states and 995 transitions. Second operand 3 states. [2020-11-28 03:14:12,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:12,270 INFO L93 Difference]: Finished difference Result 1363 states and 1993 transitions. [2020-11-28 03:14:12,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:12,271 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2020-11-28 03:14:12,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:12,276 INFO L225 Difference]: With dead ends: 1363 [2020-11-28 03:14:12,276 INFO L226 Difference]: Without dead ends: 691 [2020-11-28 03:14:12,278 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 03:14:12,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-11-28 03:14:12,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 678. [2020-11-28 03:14:12,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-11-28 03:14:12,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 988 transitions. [2020-11-28 03:14:12,313 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 988 transitions. Word has length 101 [2020-11-28 03:14:12,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:12,313 INFO L481 AbstractCegarLoop]: Abstraction has 678 states and 988 transitions. [2020-11-28 03:14:12,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:12,314 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 988 transitions. [2020-11-28 03:14:12,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-11-28 03:14:12,316 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:12,316 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2020-11-28 03:14:12,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-28 03:14:12,316 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:12,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:12,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1334267025, now seen corresponding path program 1 times [2020-11-28 03:14:12,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:12,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873982161] [2020-11-28 03:14:12,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:12,369 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-28 03:14:12,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873982161] [2020-11-28 03:14:12,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:12,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:12,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503085759] [2020-11-28 03:14:12,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:12,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:12,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:12,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:12,372 INFO L87 Difference]: Start difference. First operand 678 states and 988 transitions. Second operand 3 states. [2020-11-28 03:14:12,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:12,485 INFO L93 Difference]: Finished difference Result 1989 states and 2896 transitions. [2020-11-28 03:14:12,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:12,486 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2020-11-28 03:14:12,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:12,495 INFO L225 Difference]: With dead ends: 1989 [2020-11-28 03:14:12,495 INFO L226 Difference]: Without dead ends: 1319 [2020-11-28 03:14:12,496 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 03:14:12,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2020-11-28 03:14:12,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1317. [2020-11-28 03:14:12,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1317 states. [2020-11-28 03:14:12,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1903 transitions. [2020-11-28 03:14:12,564 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1903 transitions. Word has length 102 [2020-11-28 03:14:12,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:12,564 INFO L481 AbstractCegarLoop]: Abstraction has 1317 states and 1903 transitions. [2020-11-28 03:14:12,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:12,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1903 transitions. [2020-11-28 03:14:12,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-11-28 03:14:12,567 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:12,567 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2020-11-28 03:14:12,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-11-28 03:14:12,569 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:12,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:12,570 INFO L82 PathProgramCache]: Analyzing trace with hash 747461011, now seen corresponding path program 1 times [2020-11-28 03:14:12,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:12,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062710624] [2020-11-28 03:14:12,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:12,610 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:12,649 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:12,726 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:14:12,726 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:14:12,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-11-28 03:14:12,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:14:12 BoogieIcfgContainer [2020-11-28 03:14:12,873 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:14:12,874 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:14:12,874 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:14:12,874 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:14:12,882 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:14:03" (3/4) ... [2020-11-28 03:14:12,884 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:14:13,005 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_304fa57b-1146-4b28-b8ac-c607beffd61a/bin/uautomizer/witness.graphml [2020-11-28 03:14:13,005 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:14:13,008 INFO L168 Benchmark]: Toolchain (without parser) took 11591.70 ms. Allocated memory was 100.7 MB in the beginning and 182.5 MB in the end (delta: 81.8 MB). Free memory was 63.8 MB in the beginning and 75.2 MB in the end (delta: -11.4 MB). Peak memory consumption was 69.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:13,008 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 100.7 MB. Free memory was 80.4 MB in the beginning and 80.3 MB in the end (delta: 53.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:14:13,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 498.66 ms. Allocated memory is still 100.7 MB. Free memory was 63.6 MB in the beginning and 72.2 MB in the end (delta: -8.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:13,009 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.87 ms. Allocated memory is still 100.7 MB. Free memory was 72.2 MB in the beginning and 69.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:13,010 INFO L168 Benchmark]: Boogie Preprocessor took 46.52 ms. Allocated memory is still 100.7 MB. Free memory was 69.3 MB in the beginning and 67.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:13,010 INFO L168 Benchmark]: RCFGBuilder took 1342.56 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 67.2 MB in the beginning and 77.3 MB in the end (delta: -10.1 MB). Peak memory consumption was 39.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:13,010 INFO L168 Benchmark]: TraceAbstraction took 9488.55 ms. Allocated memory was 125.8 MB in the beginning and 182.5 MB in the end (delta: 56.6 MB). Free memory was 76.5 MB in the beginning and 87.8 MB in the end (delta: -11.4 MB). Peak memory consumption was 44.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:13,011 INFO L168 Benchmark]: Witness Printer took 132.06 ms. Allocated memory is still 182.5 MB. Free memory was 87.8 MB in the beginning and 75.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:13,013 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 100.7 MB. Free memory was 80.4 MB in the beginning and 80.3 MB in the end (delta: 53.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 498.66 ms. Allocated memory is still 100.7 MB. Free memory was 63.6 MB in the beginning and 72.2 MB in the end (delta: -8.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.87 ms. Allocated memory is still 100.7 MB. Free memory was 72.2 MB in the beginning and 69.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.52 ms. Allocated memory is still 100.7 MB. Free memory was 69.3 MB in the beginning and 67.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1342.56 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 67.2 MB in the beginning and 77.3 MB in the end (delta: -10.1 MB). Peak memory consumption was 39.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9488.55 ms. Allocated memory was 125.8 MB in the beginning and 182.5 MB in the end (delta: 56.6 MB). Free memory was 76.5 MB in the beginning and 87.8 MB in the end (delta: -11.4 MB). Peak memory consumption was 44.9 MB. Max. memory is 16.1 GB. * Witness Printer took 132.06 ms. Allocated memory is still 182.5 MB. Free memory was 87.8 MB in the beginning and 75.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L649] int s ; [L650] int tmp ; [L654] s = 8464 [L13] int s__info_callback = __VERIFIER_nondet_int() ; [L14] int s__in_handshake = __VERIFIER_nondet_int() ; [L15] int s__state ; [L16] int s__new_session ; [L17] int s__server ; [L18] int s__version = __VERIFIER_nondet_int() ; [L19] int s__type ; [L20] int s__init_num ; [L21] int s__hit = __VERIFIER_nondet_int() ; [L22] int s__rwstate ; [L23] int s__init_buf___0 = 1; [L24] int s__debug = __VERIFIER_nondet_int() ; [L25] int s__shutdown ; [L26] int s__cert = __VERIFIER_nondet_int() ; [L27] int s__options = __VERIFIER_nondet_int() ; [L28] int s__verify_mode = __VERIFIER_nondet_int() ; [L29] int s__session__peer = __VERIFIER_nondet_int() ; [L30] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L31] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L33] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L34] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L35] int s__s3__tmp__cert_request ; [L36] int s__s3__tmp__reuse_message ; [L37] int s__s3__tmp__use_rsa_tmp ; [L38] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L39] int s__s3__tmp__new_cipher__algorithms ; [L40] int s__s3__tmp__next_state___0 ; [L41] int s__s3__tmp__new_cipher__algo_strength ; [L42] int s__session__cipher ; [L43] int buf ; [L44] unsigned long l ; [L45] unsigned long Time ; [L46] unsigned long tmp ; [L47] int cb ; [L48] long num1 = __VERIFIER_nondet_long() ; [L49] int ret ; [L50] int new_state ; [L51] int state ; [L52] int skip ; [L53] int got_new_session ; [L54] int tmp___1 = __VERIFIER_nondet_int() ; [L55] int tmp___2 = __VERIFIER_nondet_int() ; [L56] int tmp___3 = __VERIFIER_nondet_int() ; [L57] int tmp___4 = __VERIFIER_nondet_int() ; [L58] int tmp___5 = __VERIFIER_nondet_int() ; [L59] int tmp___6 = __VERIFIER_nondet_int() ; [L60] int tmp___7 = __VERIFIER_nondet_int() ; [L61] long tmp___8 = __VERIFIER_nondet_long() ; [L62] int tmp___9 = __VERIFIER_nondet_int() ; [L63] int tmp___10 = __VERIFIER_nondet_int() ; [L64] int blastFlag ; [L65] int __cil_tmp55 ; [L66] unsigned long __cil_tmp56 ; [L67] unsigned long __cil_tmp57 ; [L68] unsigned long __cil_tmp58 ; [L69] unsigned long __cil_tmp59 ; [L70] int __cil_tmp60 ; [L71] unsigned long __cil_tmp61 ; [L74] s__state = initial_state [L75] blastFlag = 0 [L76] tmp = __VERIFIER_nondet_int() [L77] Time = tmp [L78] cb = 0 [L79] ret = -1 [L80] skip = 0 [L81] got_new_session = 0 [L82] COND TRUE s__info_callback != 0 [L83] cb = s__info_callback [L89] s__in_handshake ++ [L90] COND FALSE !(tmp___1 + 12288) [L95] COND FALSE !(s__cert == 0) [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND TRUE s__state == 8464 [L272] s__shutdown = 0 [L273] ret = __VERIFIER_nondet_int() [L274] COND TRUE blastFlag == 0 [L275] blastFlag = 1 [L277] COND FALSE !(ret <= 0) [L280] got_new_session = 1 [L281] s__state = 8496 [L282] s__init_num = 0 [L601] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L602] COND FALSE !(! s__s3__tmp__reuse_message) [L633] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND TRUE s__state == 8496 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L290] COND FALSE !(ret <= 0) [L293] COND FALSE !(\read(s__hit)) [L296] s__state = 8512 [L298] s__init_num = 0 [L601] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L602] COND FALSE !(! s__s3__tmp__reuse_message) [L633] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND TRUE s__state == 8512 [L303] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L304] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L305] COND TRUE __cil_tmp56 + 256UL [L306] skip = 1 [L317] s__state = 8528 [L318] s__init_num = 0 [L601] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L602] COND FALSE !(! s__s3__tmp__reuse_message) [L633] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND TRUE s__state == 8528 [L322] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L323] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L325] __cil_tmp57 = (unsigned long )s__options [L326] COND TRUE __cil_tmp57 + 2097152UL [L327] s__s3__tmp__use_rsa_tmp = 1 [L332] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L359] ret = __VERIFIER_nondet_int() [L360] COND FALSE !(blastFlag == 6) [L363] COND FALSE !(ret <= 0) [L380] s__state = 8544 [L381] s__init_num = 0 [L601] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L602] COND TRUE ! s__s3__tmp__reuse_message [L603] COND TRUE ! skip [L604] COND TRUE state == 8528 [L605] COND TRUE s__state == 8544 [L606] COND TRUE tmp___7 != 1024 [L607] COND TRUE tmp___7 != 512 [L608] COND TRUE __cil_tmp58 != 4294967294 [L609] COND TRUE l != 4294967266 [L3] __assert_fail("0", "s3_srvr_13.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 154 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.2s, OverallIterations: 26, TraceHistogramMax: 4, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4418 SDtfs, 4358 SDslu, 1315 SDs, 0 SdLazy, 2050 SolverSat, 916 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1317occurred in iteration=25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 25 MinimizatonAttempts, 865 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 1523 NumberOfCodeBlocks, 1523 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 1396 ConstructedInterpolants, 0 QuantifiedInterpolants, 183768 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 25 InterpolantComputations, 25 PerfectInterpolantSequences, 646/646 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...