./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_11.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_3f6e7b41-4969-4ff1-94f0-834d4c8f451f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3f6e7b41-4969-4ff1-94f0-834d4c8f451f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3f6e7b41-4969-4ff1-94f0-834d4c8f451f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3f6e7b41-4969-4ff1-94f0-834d4c8f451f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_11.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3f6e7b41-4969-4ff1-94f0-834d4c8f451f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3f6e7b41-4969-4ff1-94f0-834d4c8f451f/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 defe4a000b54820195525cab63f7790d3323d50a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 03:14:49,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:14:49,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:14:49,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:14:49,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:14:49,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:14:49,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:14:49,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:14:49,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:14:49,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:14:49,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:14:49,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:14:49,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:14:49,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:14:49,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:14:49,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:14:49,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:14:49,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:14:49,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:14:49,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:14:49,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:14:49,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:14:49,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:14:49,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:14:49,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:14:49,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:14:49,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:14:49,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:14:49,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:14:49,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:14:49,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:14:49,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:14:49,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:14:49,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:14:49,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:14:49,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:14:49,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:14:49,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:14:49,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:14:49,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:14:49,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:14:49,614 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3f6e7b41-4969-4ff1-94f0-834d4c8f451f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:14:49,654 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:14:49,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:14:49,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:14:49,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:14:49,657 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:14:49,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:14:49,658 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:14:49,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:14:49,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:14:49,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:14:49,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:14:49,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:14:49,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:14:49,661 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:14:49,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:14:49,661 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:14:49,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:14:49,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:14:49,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:14:49,662 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:14:49,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:14:49,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:14:49,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:14:49,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:14:49,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:14:49,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:14:49,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:14:49,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:14:49,664 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:14:49,665 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_3f6e7b41-4969-4ff1-94f0-834d4c8f451f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3f6e7b41-4969-4ff1-94f0-834d4c8f451f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> defe4a000b54820195525cab63f7790d3323d50a [2020-11-28 03:14:49,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:14:49,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:14:49,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:14:49,994 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:14:49,995 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:14:49,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3f6e7b41-4969-4ff1-94f0-834d4c8f451f/bin/uautomizer/../../sv-benchmarks/c/openssl-simplified/s3_srvr_11.cil.c [2020-11-28 03:14:50,075 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3f6e7b41-4969-4ff1-94f0-834d4c8f451f/bin/uautomizer/data/21cd014ef/5a8f7ee6481d4c828e8e19cf91fe81c0/FLAGb1ed2bc5e [2020-11-28 03:14:50,563 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:14:50,564 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3f6e7b41-4969-4ff1-94f0-834d4c8f451f/sv-benchmarks/c/openssl-simplified/s3_srvr_11.cil.c [2020-11-28 03:14:50,595 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3f6e7b41-4969-4ff1-94f0-834d4c8f451f/bin/uautomizer/data/21cd014ef/5a8f7ee6481d4c828e8e19cf91fe81c0/FLAGb1ed2bc5e [2020-11-28 03:14:50,939 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3f6e7b41-4969-4ff1-94f0-834d4c8f451f/bin/uautomizer/data/21cd014ef/5a8f7ee6481d4c828e8e19cf91fe81c0 [2020-11-28 03:14:50,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:14:50,942 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:14:50,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:14:50,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:14:50,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:14:50,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:14:50" (1/1) ... [2020-11-28 03:14:50,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32a2e589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:50, skipping insertion in model container [2020-11-28 03:14:50,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:14:50" (1/1) ... [2020-11-28 03:14:50,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:14:51,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:14:51,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:14:51,310 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:14:51,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:14:51,406 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:14:51,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:51 WrapperNode [2020-11-28 03:14:51,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:14:51,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:14:51,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:14:51,408 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:14:51,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:51" (1/1) ... [2020-11-28 03:14:51,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:51" (1/1) ... [2020-11-28 03:14:51,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:14:51,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:14:51,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:14:51,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:14:51,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:51" (1/1) ... [2020-11-28 03:14:51,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:51" (1/1) ... [2020-11-28 03:14:51,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:51" (1/1) ... [2020-11-28 03:14:51,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:51" (1/1) ... [2020-11-28 03:14:51,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:51" (1/1) ... [2020-11-28 03:14:51,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:51" (1/1) ... [2020-11-28 03:14:51,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:51" (1/1) ... [2020-11-28 03:14:51,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:14:51,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:14:51,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:14:51,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:14:51,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f6e7b41-4969-4ff1-94f0-834d4c8f451f/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 03:14:51,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:14:51,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:14:51,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:14:51,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:14:51,727 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-28 03:14:52,498 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-11-28 03:14:52,498 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-11-28 03:14:52,514 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:14:52,514 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 03:14:52,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:14:52 BoogieIcfgContainer [2020-11-28 03:14:52,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:14:52,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:14:52,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:14:52,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:14:52,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:14:50" (1/3) ... [2020-11-28 03:14:52,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446788a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:14:52, skipping insertion in model container [2020-11-28 03:14:52,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:51" (2/3) ... [2020-11-28 03:14:52,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446788a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:14:52, skipping insertion in model container [2020-11-28 03:14:52,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:14:52" (3/3) ... [2020-11-28 03:14:52,528 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_11.cil.c [2020-11-28 03:14:52,538 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:14:52,543 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:14:52,554 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:14:52,602 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:14:52,602 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:14:52,602 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:14:52,602 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:14:52,603 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:14:52,603 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:14:52,603 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:14:52,603 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:14:52,620 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states. [2020-11-28 03:14:52,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-28 03:14:52,627 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:52,628 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 03:14:52,628 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:52,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:52,634 INFO L82 PathProgramCache]: Analyzing trace with hash -814657320, now seen corresponding path program 1 times [2020-11-28 03:14:52,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:52,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622747833] [2020-11-28 03:14:52,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:52,843 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 03:14:52,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622747833] [2020-11-28 03:14:52,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:52,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:52,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551412113] [2020-11-28 03:14:52,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:52,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:52,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:52,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:52,865 INFO L87 Difference]: Start difference. First operand 150 states. Second operand 3 states. [2020-11-28 03:14:53,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:53,140 INFO L93 Difference]: Finished difference Result 317 states and 543 transitions. [2020-11-28 03:14:53,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:53,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-11-28 03:14:53,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:53,166 INFO L225 Difference]: With dead ends: 317 [2020-11-28 03:14:53,169 INFO L226 Difference]: Without dead ends: 155 [2020-11-28 03:14:53,177 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 03:14:53,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-11-28 03:14:53,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2020-11-28 03:14:53,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-11-28 03:14:53,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 241 transitions. [2020-11-28 03:14:53,235 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 241 transitions. Word has length 26 [2020-11-28 03:14:53,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:53,236 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 241 transitions. [2020-11-28 03:14:53,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:53,237 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 241 transitions. [2020-11-28 03:14:53,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 03:14:53,241 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:53,242 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 03:14:53,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:14:53,243 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:53,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:53,244 INFO L82 PathProgramCache]: Analyzing trace with hash 327844106, now seen corresponding path program 1 times [2020-11-28 03:14:53,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:53,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144637370] [2020-11-28 03:14:53,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:53,365 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 03:14:53,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144637370] [2020-11-28 03:14:53,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:53,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:53,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245314394] [2020-11-28 03:14:53,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:53,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:53,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:53,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:53,368 INFO L87 Difference]: Start difference. First operand 153 states and 241 transitions. Second operand 3 states. [2020-11-28 03:14:53,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:53,528 INFO L93 Difference]: Finished difference Result 319 states and 502 transitions. [2020-11-28 03:14:53,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:53,529 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-28 03:14:53,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:53,531 INFO L225 Difference]: With dead ends: 319 [2020-11-28 03:14:53,531 INFO L226 Difference]: Without dead ends: 174 [2020-11-28 03:14:53,533 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 03:14:53,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-11-28 03:14:53,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-11-28 03:14:53,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-11-28 03:14:53,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 270 transitions. [2020-11-28 03:14:53,554 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 270 transitions. Word has length 27 [2020-11-28 03:14:53,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:53,555 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 270 transitions. [2020-11-28 03:14:53,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:53,555 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 270 transitions. [2020-11-28 03:14:53,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 03:14:53,558 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:53,559 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 03:14:53,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:14:53,559 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:53,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:53,561 INFO L82 PathProgramCache]: Analyzing trace with hash 883966207, now seen corresponding path program 1 times [2020-11-28 03:14:53,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:53,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466897698] [2020-11-28 03:14:53,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:53,642 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 03:14:53,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466897698] [2020-11-28 03:14:53,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:53,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:53,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768602068] [2020-11-28 03:14:53,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:53,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:53,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:53,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:53,645 INFO L87 Difference]: Start difference. First operand 174 states and 270 transitions. Second operand 3 states. [2020-11-28 03:14:53,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:53,819 INFO L93 Difference]: Finished difference Result 348 states and 542 transitions. [2020-11-28 03:14:53,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:53,820 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-28 03:14:53,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:53,822 INFO L225 Difference]: With dead ends: 348 [2020-11-28 03:14:53,822 INFO L226 Difference]: Without dead ends: 182 [2020-11-28 03:14:53,823 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 03:14:53,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-11-28 03:14:53,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 180. [2020-11-28 03:14:53,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-11-28 03:14:53,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 281 transitions. [2020-11-28 03:14:53,844 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 281 transitions. Word has length 27 [2020-11-28 03:14:53,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:53,845 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 281 transitions. [2020-11-28 03:14:53,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:53,845 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 281 transitions. [2020-11-28 03:14:53,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 03:14:53,846 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:53,846 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 03:14:53,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:14:53,847 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:53,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:53,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1794489921, now seen corresponding path program 1 times [2020-11-28 03:14:53,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:53,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460004593] [2020-11-28 03:14:53,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:53,913 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 03:14:53,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460004593] [2020-11-28 03:14:53,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:53,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:53,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710154001] [2020-11-28 03:14:53,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:53,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:53,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:53,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:53,916 INFO L87 Difference]: Start difference. First operand 180 states and 281 transitions. Second operand 3 states. [2020-11-28 03:14:54,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:54,121 INFO L93 Difference]: Finished difference Result 353 states and 552 transitions. [2020-11-28 03:14:54,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:54,122 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-28 03:14:54,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:54,123 INFO L225 Difference]: With dead ends: 353 [2020-11-28 03:14:54,123 INFO L226 Difference]: Without dead ends: 181 [2020-11-28 03:14:54,125 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 03:14:54,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-11-28 03:14:54,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2020-11-28 03:14:54,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-11-28 03:14:54,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 282 transitions. [2020-11-28 03:14:54,148 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 282 transitions. Word has length 27 [2020-11-28 03:14:54,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:54,149 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 282 transitions. [2020-11-28 03:14:54,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:54,149 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 282 transitions. [2020-11-28 03:14:54,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-28 03:14:54,153 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:54,154 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 03:14:54,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:14:54,155 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:54,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:54,157 INFO L82 PathProgramCache]: Analyzing trace with hash -594155684, now seen corresponding path program 1 times [2020-11-28 03:14:54,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:54,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962662012] [2020-11-28 03:14:54,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:54,230 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 03:14:54,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962662012] [2020-11-28 03:14:54,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:54,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:54,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278314133] [2020-11-28 03:14:54,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:54,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:54,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:54,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:54,232 INFO L87 Difference]: Start difference. First operand 181 states and 282 transitions. Second operand 3 states. [2020-11-28 03:14:54,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:54,436 INFO L93 Difference]: Finished difference Result 364 states and 564 transitions. [2020-11-28 03:14:54,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:54,436 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-11-28 03:14:54,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:54,438 INFO L225 Difference]: With dead ends: 364 [2020-11-28 03:14:54,438 INFO L226 Difference]: Without dead ends: 191 [2020-11-28 03:14:54,439 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 03:14:54,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-11-28 03:14:54,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 181. [2020-11-28 03:14:54,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-11-28 03:14:54,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 280 transitions. [2020-11-28 03:14:54,456 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 280 transitions. Word has length 28 [2020-11-28 03:14:54,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:54,456 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 280 transitions. [2020-11-28 03:14:54,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:54,457 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 280 transitions. [2020-11-28 03:14:54,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-28 03:14:54,460 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:54,460 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 03:14:54,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:14:54,461 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:54,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:54,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1519140995, now seen corresponding path program 1 times [2020-11-28 03:14:54,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:54,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39734532] [2020-11-28 03:14:54,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:54,533 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 03:14:54,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39734532] [2020-11-28 03:14:54,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:54,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:54,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812327634] [2020-11-28 03:14:54,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:54,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:54,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:54,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:54,536 INFO L87 Difference]: Start difference. First operand 181 states and 280 transitions. Second operand 3 states. [2020-11-28 03:14:54,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:54,728 INFO L93 Difference]: Finished difference Result 364 states and 560 transitions. [2020-11-28 03:14:54,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:54,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-11-28 03:14:54,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:54,731 INFO L225 Difference]: With dead ends: 364 [2020-11-28 03:14:54,731 INFO L226 Difference]: Without dead ends: 191 [2020-11-28 03:14:54,731 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 03:14:54,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-11-28 03:14:54,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 181. [2020-11-28 03:14:54,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-11-28 03:14:54,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 278 transitions. [2020-11-28 03:14:54,740 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 278 transitions. Word has length 29 [2020-11-28 03:14:54,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:54,741 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 278 transitions. [2020-11-28 03:14:54,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:54,741 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 278 transitions. [2020-11-28 03:14:54,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 03:14:54,744 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:54,744 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 03:14:54,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:14:54,745 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:54,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:54,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1615530751, now seen corresponding path program 1 times [2020-11-28 03:14:54,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:54,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020738353] [2020-11-28 03:14:54,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:54,816 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 03:14:54,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020738353] [2020-11-28 03:14:54,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:54,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:54,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52192135] [2020-11-28 03:14:54,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:54,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:54,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:54,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:54,818 INFO L87 Difference]: Start difference. First operand 181 states and 278 transitions. Second operand 3 states. [2020-11-28 03:14:55,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:55,015 INFO L93 Difference]: Finished difference Result 364 states and 556 transitions. [2020-11-28 03:14:55,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:55,016 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-11-28 03:14:55,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:55,017 INFO L225 Difference]: With dead ends: 364 [2020-11-28 03:14:55,018 INFO L226 Difference]: Without dead ends: 191 [2020-11-28 03:14:55,018 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 03:14:55,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-11-28 03:14:55,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 181. [2020-11-28 03:14:55,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-11-28 03:14:55,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 276 transitions. [2020-11-28 03:14:55,027 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 276 transitions. Word has length 30 [2020-11-28 03:14:55,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:55,029 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 276 transitions. [2020-11-28 03:14:55,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:55,029 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 276 transitions. [2020-11-28 03:14:55,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 03:14:55,030 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:55,030 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 03:14:55,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:14:55,030 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:55,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:55,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1189847454, now seen corresponding path program 1 times [2020-11-28 03:14:55,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:55,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145868496] [2020-11-28 03:14:55,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:55,087 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 03:14:55,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145868496] [2020-11-28 03:14:55,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:55,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:14:55,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606003568] [2020-11-28 03:14:55,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:14:55,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:55,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:14:55,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:14:55,089 INFO L87 Difference]: Start difference. First operand 181 states and 276 transitions. Second operand 4 states. [2020-11-28 03:14:55,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:55,430 INFO L93 Difference]: Finished difference Result 512 states and 779 transitions. [2020-11-28 03:14:55,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:14:55,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-11-28 03:14:55,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:55,433 INFO L225 Difference]: With dead ends: 512 [2020-11-28 03:14:55,433 INFO L226 Difference]: Without dead ends: 339 [2020-11-28 03:14:55,434 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 03:14:55,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-11-28 03:14:55,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 324. [2020-11-28 03:14:55,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-11-28 03:14:55,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 495 transitions. [2020-11-28 03:14:55,462 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 495 transitions. Word has length 30 [2020-11-28 03:14:55,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:55,462 INFO L481 AbstractCegarLoop]: Abstraction has 324 states and 495 transitions. [2020-11-28 03:14:55,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:14:55,463 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 495 transitions. [2020-11-28 03:14:55,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-28 03:14:55,464 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:55,465 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, 1, 1, 1] [2020-11-28 03:14:55,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:14:55,465 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:55,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:55,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1632006041, now seen corresponding path program 1 times [2020-11-28 03:14:55,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:55,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816078447] [2020-11-28 03:14:55,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:55,536 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 03:14:55,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816078447] [2020-11-28 03:14:55,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:55,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:55,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278212887] [2020-11-28 03:14:55,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:55,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:55,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:55,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:55,538 INFO L87 Difference]: Start difference. First operand 324 states and 495 transitions. Second operand 3 states. [2020-11-28 03:14:55,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:55,801 INFO L93 Difference]: Finished difference Result 699 states and 1075 transitions. [2020-11-28 03:14:55,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:55,802 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-11-28 03:14:55,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:55,805 INFO L225 Difference]: With dead ends: 699 [2020-11-28 03:14:55,805 INFO L226 Difference]: Without dead ends: 383 [2020-11-28 03:14:55,805 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 03:14:55,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-11-28 03:14:55,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 375. [2020-11-28 03:14:55,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-11-28 03:14:55,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 582 transitions. [2020-11-28 03:14:55,826 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 582 transitions. Word has length 44 [2020-11-28 03:14:55,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:55,829 INFO L481 AbstractCegarLoop]: Abstraction has 375 states and 582 transitions. [2020-11-28 03:14:55,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:55,829 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 582 transitions. [2020-11-28 03:14:55,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-28 03:14:55,830 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:55,830 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, 1, 1, 1, 1] [2020-11-28 03:14:55,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 03:14:55,831 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:55,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:55,831 INFO L82 PathProgramCache]: Analyzing trace with hash -954576389, now seen corresponding path program 1 times [2020-11-28 03:14:55,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:55,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938216701] [2020-11-28 03:14:55,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:55,872 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 03:14:55,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938216701] [2020-11-28 03:14:55,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:55,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:55,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137174441] [2020-11-28 03:14:55,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:55,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:55,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:55,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:55,877 INFO L87 Difference]: Start difference. First operand 375 states and 582 transitions. Second operand 3 states. [2020-11-28 03:14:56,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:56,134 INFO L93 Difference]: Finished difference Result 776 states and 1211 transitions. [2020-11-28 03:14:56,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:56,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2020-11-28 03:14:56,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:56,139 INFO L225 Difference]: With dead ends: 776 [2020-11-28 03:14:56,139 INFO L226 Difference]: Without dead ends: 407 [2020-11-28 03:14:56,140 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 03:14:56,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-11-28 03:14:56,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 399. [2020-11-28 03:14:56,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2020-11-28 03:14:56,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 628 transitions. [2020-11-28 03:14:56,165 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 628 transitions. Word has length 45 [2020-11-28 03:14:56,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:56,165 INFO L481 AbstractCegarLoop]: Abstraction has 399 states and 628 transitions. [2020-11-28 03:14:56,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:56,166 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 628 transitions. [2020-11-28 03:14:56,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-11-28 03:14:56,167 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:56,167 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:56,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 03:14:56,167 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:56,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:56,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1426018212, now seen corresponding path program 1 times [2020-11-28 03:14:56,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:56,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37257713] [2020-11-28 03:14:56,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:56,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:56,212 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:14:56,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37257713] [2020-11-28 03:14:56,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:56,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:56,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112247610] [2020-11-28 03:14:56,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:56,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:56,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:56,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:56,215 INFO L87 Difference]: Start difference. First operand 399 states and 628 transitions. Second operand 3 states. [2020-11-28 03:14:56,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:56,464 INFO L93 Difference]: Finished difference Result 830 states and 1311 transitions. [2020-11-28 03:14:56,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:56,465 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-11-28 03:14:56,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:56,468 INFO L225 Difference]: With dead ends: 830 [2020-11-28 03:14:56,468 INFO L226 Difference]: Without dead ends: 439 [2020-11-28 03:14:56,469 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 03:14:56,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-11-28 03:14:56,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2020-11-28 03:14:56,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-11-28 03:14:56,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 693 transitions. [2020-11-28 03:14:56,487 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 693 transitions. Word has length 55 [2020-11-28 03:14:56,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:56,487 INFO L481 AbstractCegarLoop]: Abstraction has 439 states and 693 transitions. [2020-11-28 03:14:56,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:56,488 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 693 transitions. [2020-11-28 03:14:56,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-11-28 03:14:56,489 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:56,489 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:56,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 03:14:56,490 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:56,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:56,490 INFO L82 PathProgramCache]: Analyzing trace with hash 961137590, now seen corresponding path program 1 times [2020-11-28 03:14:56,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:56,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713682263] [2020-11-28 03:14:56,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:56,553 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-28 03:14:56,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713682263] [2020-11-28 03:14:56,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:56,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:56,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558816178] [2020-11-28 03:14:56,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:56,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:56,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:56,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:56,557 INFO L87 Difference]: Start difference. First operand 439 states and 693 transitions. Second operand 3 states. [2020-11-28 03:14:56,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:56,782 INFO L93 Difference]: Finished difference Result 912 states and 1441 transitions. [2020-11-28 03:14:56,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:56,782 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-11-28 03:14:56,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:56,785 INFO L225 Difference]: With dead ends: 912 [2020-11-28 03:14:56,785 INFO L226 Difference]: Without dead ends: 481 [2020-11-28 03:14:56,786 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 03:14:56,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-11-28 03:14:56,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 477. [2020-11-28 03:14:56,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-11-28 03:14:56,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 753 transitions. [2020-11-28 03:14:56,808 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 753 transitions. Word has length 82 [2020-11-28 03:14:56,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:56,808 INFO L481 AbstractCegarLoop]: Abstraction has 477 states and 753 transitions. [2020-11-28 03:14:56,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:56,808 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 753 transitions. [2020-11-28 03:14:56,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-11-28 03:14:56,810 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:56,810 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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 03:14:56,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-28 03:14:56,810 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:56,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:56,811 INFO L82 PathProgramCache]: Analyzing trace with hash -986689731, now seen corresponding path program 1 times [2020-11-28 03:14:56,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:56,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859576830] [2020-11-28 03:14:56,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:56,863 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-28 03:14:56,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859576830] [2020-11-28 03:14:56,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:56,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:56,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499001296] [2020-11-28 03:14:56,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:56,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:56,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:56,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:56,866 INFO L87 Difference]: Start difference. First operand 477 states and 753 transitions. Second operand 3 states. [2020-11-28 03:14:57,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:57,096 INFO L93 Difference]: Finished difference Result 950 states and 1498 transitions. [2020-11-28 03:14:57,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:57,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-11-28 03:14:57,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:57,099 INFO L225 Difference]: With dead ends: 950 [2020-11-28 03:14:57,100 INFO L226 Difference]: Without dead ends: 481 [2020-11-28 03:14:57,100 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 03:14:57,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-11-28 03:14:57,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 477. [2020-11-28 03:14:57,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-11-28 03:14:57,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 750 transitions. [2020-11-28 03:14:57,121 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 750 transitions. Word has length 83 [2020-11-28 03:14:57,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:57,123 INFO L481 AbstractCegarLoop]: Abstraction has 477 states and 750 transitions. [2020-11-28 03:14:57,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:57,123 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 750 transitions. [2020-11-28 03:14:57,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-28 03:14:57,124 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:57,125 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2020-11-28 03:14:57,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-28 03:14:57,125 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:57,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:57,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1836560986, now seen corresponding path program 1 times [2020-11-28 03:14:57,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:57,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327585246] [2020-11-28 03:14:57,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:57,198 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-28 03:14:57,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327585246] [2020-11-28 03:14:57,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:57,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:57,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139860408] [2020-11-28 03:14:57,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:57,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:57,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:57,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:57,201 INFO L87 Difference]: Start difference. First operand 477 states and 750 transitions. Second operand 3 states. [2020-11-28 03:14:57,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:57,449 INFO L93 Difference]: Finished difference Result 998 states and 1573 transitions. [2020-11-28 03:14:57,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:57,449 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-11-28 03:14:57,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:57,453 INFO L225 Difference]: With dead ends: 998 [2020-11-28 03:14:57,453 INFO L226 Difference]: Without dead ends: 529 [2020-11-28 03:14:57,454 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 03:14:57,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-11-28 03:14:57,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 513. [2020-11-28 03:14:57,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-11-28 03:14:57,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 805 transitions. [2020-11-28 03:14:57,475 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 805 transitions. Word has length 84 [2020-11-28 03:14:57,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:57,475 INFO L481 AbstractCegarLoop]: Abstraction has 513 states and 805 transitions. [2020-11-28 03:14:57,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:57,476 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 805 transitions. [2020-11-28 03:14:57,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-28 03:14:57,477 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:57,477 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:57,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-28 03:14:57,478 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:57,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:57,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1112959693, now seen corresponding path program 1 times [2020-11-28 03:14:57,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:57,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751639501] [2020-11-28 03:14:57,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:57,508 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-28 03:14:57,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751639501] [2020-11-28 03:14:57,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:57,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:57,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299990408] [2020-11-28 03:14:57,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:57,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:57,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:57,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:57,510 INFO L87 Difference]: Start difference. First operand 513 states and 805 transitions. Second operand 3 states. [2020-11-28 03:14:57,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:57,717 INFO L93 Difference]: Finished difference Result 1034 states and 1624 transitions. [2020-11-28 03:14:57,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:57,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-11-28 03:14:57,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:57,720 INFO L225 Difference]: With dead ends: 1034 [2020-11-28 03:14:57,720 INFO L226 Difference]: Without dead ends: 529 [2020-11-28 03:14:57,721 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 03:14:57,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-11-28 03:14:57,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 513. [2020-11-28 03:14:57,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-11-28 03:14:57,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 801 transitions. [2020-11-28 03:14:57,757 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 801 transitions. Word has length 85 [2020-11-28 03:14:57,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:57,758 INFO L481 AbstractCegarLoop]: Abstraction has 513 states and 801 transitions. [2020-11-28 03:14:57,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:57,758 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 801 transitions. [2020-11-28 03:14:57,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-28 03:14:57,759 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:57,759 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, 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 03:14:57,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-28 03:14:57,760 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:57,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:57,760 INFO L82 PathProgramCache]: Analyzing trace with hash 167103299, now seen corresponding path program 1 times [2020-11-28 03:14:57,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:57,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870452505] [2020-11-28 03:14:57,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:57,795 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:14:57,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870452505] [2020-11-28 03:14:57,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:57,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:57,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207258394] [2020-11-28 03:14:57,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:57,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:57,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:57,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:57,799 INFO L87 Difference]: Start difference. First operand 513 states and 801 transitions. Second operand 3 states. [2020-11-28 03:14:58,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:58,060 INFO L93 Difference]: Finished difference Result 1079 states and 1683 transitions. [2020-11-28 03:14:58,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:58,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-11-28 03:14:58,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:58,064 INFO L225 Difference]: With dead ends: 1079 [2020-11-28 03:14:58,065 INFO L226 Difference]: Without dead ends: 574 [2020-11-28 03:14:58,067 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 03:14:58,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-11-28 03:14:58,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 566. [2020-11-28 03:14:58,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2020-11-28 03:14:58,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 882 transitions. [2020-11-28 03:14:58,091 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 882 transitions. Word has length 85 [2020-11-28 03:14:58,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:58,092 INFO L481 AbstractCegarLoop]: Abstraction has 566 states and 882 transitions. [2020-11-28 03:14:58,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:58,092 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 882 transitions. [2020-11-28 03:14:58,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-28 03:14:58,093 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:58,093 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:58,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-28 03:14:58,094 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:58,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:58,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1767051647, now seen corresponding path program 1 times [2020-11-28 03:14:58,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:58,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162466549] [2020-11-28 03:14:58,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:58,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:58,128 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:14:58,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162466549] [2020-11-28 03:14:58,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:58,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:58,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754327874] [2020-11-28 03:14:58,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:58,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:58,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:58,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:58,131 INFO L87 Difference]: Start difference. First operand 566 states and 882 transitions. Second operand 3 states. [2020-11-28 03:14:58,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:58,374 INFO L93 Difference]: Finished difference Result 1132 states and 1762 transitions. [2020-11-28 03:14:58,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:58,375 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-11-28 03:14:58,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:58,378 INFO L225 Difference]: With dead ends: 1132 [2020-11-28 03:14:58,378 INFO L226 Difference]: Without dead ends: 572 [2020-11-28 03:14:58,382 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 03:14:58,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-11-28 03:14:58,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 564. [2020-11-28 03:14:58,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 564 states. [2020-11-28 03:14:58,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 877 transitions. [2020-11-28 03:14:58,405 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 877 transitions. Word has length 86 [2020-11-28 03:14:58,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:58,405 INFO L481 AbstractCegarLoop]: Abstraction has 564 states and 877 transitions. [2020-11-28 03:14:58,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:58,405 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 877 transitions. [2020-11-28 03:14:58,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-11-28 03:14:58,407 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:58,407 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:58,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-28 03:14:58,408 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:58,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:58,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1128064849, now seen corresponding path program 1 times [2020-11-28 03:14:58,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:58,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643516407] [2020-11-28 03:14:58,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:58,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:58,445 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-11-28 03:14:58,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643516407] [2020-11-28 03:14:58,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:58,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:58,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173472862] [2020-11-28 03:14:58,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:58,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:58,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:58,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:58,454 INFO L87 Difference]: Start difference. First operand 564 states and 877 transitions. Second operand 3 states. [2020-11-28 03:14:58,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:58,650 INFO L93 Difference]: Finished difference Result 1160 states and 1805 transitions. [2020-11-28 03:14:58,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:58,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-11-28 03:14:58,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:58,653 INFO L225 Difference]: With dead ends: 1160 [2020-11-28 03:14:58,654 INFO L226 Difference]: Without dead ends: 604 [2020-11-28 03:14:58,655 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 03:14:58,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2020-11-28 03:14:58,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 594. [2020-11-28 03:14:58,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2020-11-28 03:14:58,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 918 transitions. [2020-11-28 03:14:58,676 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 918 transitions. Word has length 107 [2020-11-28 03:14:58,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:58,677 INFO L481 AbstractCegarLoop]: Abstraction has 594 states and 918 transitions. [2020-11-28 03:14:58,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:58,677 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 918 transitions. [2020-11-28 03:14:58,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-11-28 03:14:58,679 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:58,679 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:58,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-28 03:14:58,681 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:58,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:58,682 INFO L82 PathProgramCache]: Analyzing trace with hash 56241544, now seen corresponding path program 1 times [2020-11-28 03:14:58,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:58,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713099614] [2020-11-28 03:14:58,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:58,718 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-11-28 03:14:58,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713099614] [2020-11-28 03:14:58,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:58,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:58,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829971244] [2020-11-28 03:14:58,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:58,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:58,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:58,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:58,723 INFO L87 Difference]: Start difference. First operand 594 states and 918 transitions. Second operand 3 states. [2020-11-28 03:14:58,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:58,915 INFO L93 Difference]: Finished difference Result 1190 states and 1840 transitions. [2020-11-28 03:14:58,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:58,915 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-11-28 03:14:58,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:58,919 INFO L225 Difference]: With dead ends: 1190 [2020-11-28 03:14:58,919 INFO L226 Difference]: Without dead ends: 604 [2020-11-28 03:14:58,920 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 03:14:58,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2020-11-28 03:14:58,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 594. [2020-11-28 03:14:58,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2020-11-28 03:14:58,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 912 transitions. [2020-11-28 03:14:58,943 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 912 transitions. Word has length 108 [2020-11-28 03:14:58,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:58,944 INFO L481 AbstractCegarLoop]: Abstraction has 594 states and 912 transitions. [2020-11-28 03:14:58,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:58,944 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 912 transitions. [2020-11-28 03:14:58,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-28 03:14:58,946 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:58,946 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:58,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-28 03:14:58,946 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:58,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:58,947 INFO L82 PathProgramCache]: Analyzing trace with hash -296831400, now seen corresponding path program 1 times [2020-11-28 03:14:58,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:58,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649928051] [2020-11-28 03:14:58,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:59,027 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-11-28 03:14:59,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649928051] [2020-11-28 03:14:59,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:59,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:59,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366014493] [2020-11-28 03:14:59,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:59,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:59,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:59,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:59,030 INFO L87 Difference]: Start difference. First operand 594 states and 912 transitions. Second operand 3 states. [2020-11-28 03:14:59,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:59,234 INFO L93 Difference]: Finished difference Result 1240 states and 1907 transitions. [2020-11-28 03:14:59,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:59,234 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-11-28 03:14:59,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:59,238 INFO L225 Difference]: With dead ends: 1240 [2020-11-28 03:14:59,238 INFO L226 Difference]: Without dead ends: 654 [2020-11-28 03:14:59,239 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 03:14:59,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2020-11-28 03:14:59,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 628. [2020-11-28 03:14:59,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-11-28 03:14:59,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 959 transitions. [2020-11-28 03:14:59,263 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 959 transitions. Word has length 111 [2020-11-28 03:14:59,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:59,264 INFO L481 AbstractCegarLoop]: Abstraction has 628 states and 959 transitions. [2020-11-28 03:14:59,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:59,264 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 959 transitions. [2020-11-28 03:14:59,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-11-28 03:14:59,266 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:59,266 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 03:14:59,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-28 03:14:59,267 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:59,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:59,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1499138703, now seen corresponding path program 1 times [2020-11-28 03:14:59,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:59,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370944108] [2020-11-28 03:14:59,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:59,313 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-11-28 03:14:59,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370944108] [2020-11-28 03:14:59,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:59,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:59,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778394908] [2020-11-28 03:14:59,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:59,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:59,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:59,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:59,315 INFO L87 Difference]: Start difference. First operand 628 states and 959 transitions. Second operand 3 states. [2020-11-28 03:14:59,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:59,541 INFO L93 Difference]: Finished difference Result 1274 states and 1948 transitions. [2020-11-28 03:14:59,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:59,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2020-11-28 03:14:59,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:59,545 INFO L225 Difference]: With dead ends: 1274 [2020-11-28 03:14:59,545 INFO L226 Difference]: Without dead ends: 654 [2020-11-28 03:14:59,546 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 03:14:59,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2020-11-28 03:14:59,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 628. [2020-11-28 03:14:59,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-11-28 03:14:59,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 953 transitions. [2020-11-28 03:14:59,572 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 953 transitions. Word has length 112 [2020-11-28 03:14:59,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:59,573 INFO L481 AbstractCegarLoop]: Abstraction has 628 states and 953 transitions. [2020-11-28 03:14:59,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:59,573 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 953 transitions. [2020-11-28 03:14:59,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-11-28 03:14:59,574 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:59,575 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2020-11-28 03:14:59,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-28 03:14:59,575 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:59,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:59,576 INFO L82 PathProgramCache]: Analyzing trace with hash 657079250, now seen corresponding path program 1 times [2020-11-28 03:14:59,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:59,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684623030] [2020-11-28 03:14:59,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:59,629 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-11-28 03:14:59,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684623030] [2020-11-28 03:14:59,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:59,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:59,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471529051] [2020-11-28 03:14:59,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:59,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:59,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:59,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:59,631 INFO L87 Difference]: Start difference. First operand 628 states and 953 transitions. Second operand 3 states. [2020-11-28 03:14:59,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:59,866 INFO L93 Difference]: Finished difference Result 1301 states and 1973 transitions. [2020-11-28 03:14:59,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:59,868 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2020-11-28 03:14:59,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:59,872 INFO L225 Difference]: With dead ends: 1301 [2020-11-28 03:14:59,873 INFO L226 Difference]: Without dead ends: 681 [2020-11-28 03:14:59,874 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 03:14:59,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2020-11-28 03:14:59,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 675. [2020-11-28 03:14:59,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 675 states. [2020-11-28 03:14:59,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1021 transitions. [2020-11-28 03:14:59,907 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1021 transitions. Word has length 123 [2020-11-28 03:14:59,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:59,908 INFO L481 AbstractCegarLoop]: Abstraction has 675 states and 1021 transitions. [2020-11-28 03:14:59,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:59,908 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1021 transitions. [2020-11-28 03:14:59,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-11-28 03:14:59,910 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:59,910 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:59,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-28 03:14:59,910 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:59,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:59,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1371731480, now seen corresponding path program 1 times [2020-11-28 03:14:59,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:59,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180336413] [2020-11-28 03:14:59,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:59,996 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-11-28 03:14:59,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180336413] [2020-11-28 03:14:59,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:59,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:59,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201721853] [2020-11-28 03:14:59,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:59,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:59,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:15:00,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:15:00,001 INFO L87 Difference]: Start difference. First operand 675 states and 1021 transitions. Second operand 3 states. [2020-11-28 03:15:00,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:00,068 INFO L93 Difference]: Finished difference Result 1344 states and 2031 transitions. [2020-11-28 03:15:00,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:15:00,069 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2020-11-28 03:15:00,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:00,077 INFO L225 Difference]: With dead ends: 1344 [2020-11-28 03:15:00,077 INFO L226 Difference]: Without dead ends: 1342 [2020-11-28 03:15:00,078 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 03:15:00,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2020-11-28 03:15:00,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1340. [2020-11-28 03:15:00,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2020-11-28 03:15:00,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 2027 transitions. [2020-11-28 03:15:00,137 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 2027 transitions. Word has length 124 [2020-11-28 03:15:00,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:00,138 INFO L481 AbstractCegarLoop]: Abstraction has 1340 states and 2027 transitions. [2020-11-28 03:15:00,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:15:00,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 2027 transitions. [2020-11-28 03:15:00,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-11-28 03:15:00,141 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:00,141 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:15:00,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-28 03:15:00,141 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:15:00,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:00,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1920674126, now seen corresponding path program 1 times [2020-11-28 03:15:00,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:00,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373594980] [2020-11-28 03:15:00,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:00,179 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-11-28 03:15:00,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373594980] [2020-11-28 03:15:00,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:15:00,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:15:00,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012727303] [2020-11-28 03:15:00,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:15:00,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:00,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:15:00,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:15:00,184 INFO L87 Difference]: Start difference. First operand 1340 states and 2027 transitions. Second operand 3 states. [2020-11-28 03:15:00,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:00,295 INFO L93 Difference]: Finished difference Result 3329 states and 5035 transitions. [2020-11-28 03:15:00,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:15:00,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2020-11-28 03:15:00,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:00,306 INFO L225 Difference]: With dead ends: 3329 [2020-11-28 03:15:00,306 INFO L226 Difference]: Without dead ends: 1997 [2020-11-28 03:15:00,308 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 03:15:00,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2020-11-28 03:15:00,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1995. [2020-11-28 03:15:00,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1995 states. [2020-11-28 03:15:00,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 3013 transitions. [2020-11-28 03:15:00,392 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 3013 transitions. Word has length 125 [2020-11-28 03:15:00,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:00,393 INFO L481 AbstractCegarLoop]: Abstraction has 1995 states and 3013 transitions. [2020-11-28 03:15:00,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:15:00,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 3013 transitions. [2020-11-28 03:15:00,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-11-28 03:15:00,396 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:00,396 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:15:00,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-28 03:15:00,397 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:15:00,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:00,397 INFO L82 PathProgramCache]: Analyzing trace with hash 232432692, now seen corresponding path program 1 times [2020-11-28 03:15:00,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:00,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738525909] [2020-11-28 03:15:00,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:00,432 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-11-28 03:15:00,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738525909] [2020-11-28 03:15:00,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:15:00,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:15:00,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611495239] [2020-11-28 03:15:00,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:15:00,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:00,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:15:00,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:15:00,435 INFO L87 Difference]: Start difference. First operand 1995 states and 3013 transitions. Second operand 3 states. [2020-11-28 03:15:00,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:00,571 INFO L93 Difference]: Finished difference Result 4617 states and 6972 transitions. [2020-11-28 03:15:00,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:15:00,571 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2020-11-28 03:15:00,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:00,585 INFO L225 Difference]: With dead ends: 4617 [2020-11-28 03:15:00,586 INFO L226 Difference]: Without dead ends: 2630 [2020-11-28 03:15:00,588 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 03:15:00,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2020-11-28 03:15:00,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2628. [2020-11-28 03:15:00,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2628 states. [2020-11-28 03:15:00,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2628 states to 2628 states and 3962 transitions. [2020-11-28 03:15:00,720 INFO L78 Accepts]: Start accepts. Automaton has 2628 states and 3962 transitions. Word has length 125 [2020-11-28 03:15:00,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:00,720 INFO L481 AbstractCegarLoop]: Abstraction has 2628 states and 3962 transitions. [2020-11-28 03:15:00,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:15:00,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2628 states and 3962 transitions. [2020-11-28 03:15:00,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-11-28 03:15:00,725 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:00,726 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:15:00,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-11-28 03:15:00,726 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:15:00,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:00,727 INFO L82 PathProgramCache]: Analyzing trace with hash 357624272, now seen corresponding path program 1 times [2020-11-28 03:15:00,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:00,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274769198] [2020-11-28 03:15:00,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:00,777 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-11-28 03:15:00,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274769198] [2020-11-28 03:15:00,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:15:00,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:15:00,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703324210] [2020-11-28 03:15:00,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:15:00,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:00,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:15:00,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:15:00,780 INFO L87 Difference]: Start difference. First operand 2628 states and 3962 transitions. Second operand 3 states. [2020-11-28 03:15:01,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:01,066 INFO L93 Difference]: Finished difference Result 5376 states and 8099 transitions. [2020-11-28 03:15:01,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:15:01,067 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-11-28 03:15:01,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:01,081 INFO L225 Difference]: With dead ends: 5376 [2020-11-28 03:15:01,081 INFO L226 Difference]: Without dead ends: 2756 [2020-11-28 03:15:01,084 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 03:15:01,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2020-11-28 03:15:01,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2724. [2020-11-28 03:15:01,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2724 states. [2020-11-28 03:15:01,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 4077 transitions. [2020-11-28 03:15:01,193 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 4077 transitions. Word has length 133 [2020-11-28 03:15:01,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:01,194 INFO L481 AbstractCegarLoop]: Abstraction has 2724 states and 4077 transitions. [2020-11-28 03:15:01,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:15:01,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 4077 transitions. [2020-11-28 03:15:01,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-11-28 03:15:01,198 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:01,198 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:15:01,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-11-28 03:15:01,199 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:15:01,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:01,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1875401929, now seen corresponding path program 1 times [2020-11-28 03:15:01,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:01,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563776888] [2020-11-28 03:15:01,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:01,236 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-11-28 03:15:01,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563776888] [2020-11-28 03:15:01,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:15:01,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:15:01,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025084278] [2020-11-28 03:15:01,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:15:01,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:01,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:15:01,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:15:01,238 INFO L87 Difference]: Start difference. First operand 2724 states and 4077 transitions. Second operand 3 states. [2020-11-28 03:15:01,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:01,544 INFO L93 Difference]: Finished difference Result 5472 states and 8182 transitions. [2020-11-28 03:15:01,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:15:01,545 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-11-28 03:15:01,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:01,559 INFO L225 Difference]: With dead ends: 5472 [2020-11-28 03:15:01,559 INFO L226 Difference]: Without dead ends: 2756 [2020-11-28 03:15:01,563 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 03:15:01,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2020-11-28 03:15:01,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2724. [2020-11-28 03:15:01,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2724 states. [2020-11-28 03:15:01,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 4045 transitions. [2020-11-28 03:15:01,676 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 4045 transitions. Word has length 134 [2020-11-28 03:15:01,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:01,676 INFO L481 AbstractCegarLoop]: Abstraction has 2724 states and 4045 transitions. [2020-11-28 03:15:01,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:15:01,676 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 4045 transitions. [2020-11-28 03:15:01,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-11-28 03:15:01,680 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:01,681 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1] [2020-11-28 03:15:01,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-11-28 03:15:01,681 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:15:01,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:01,681 INFO L82 PathProgramCache]: Analyzing trace with hash 214407641, now seen corresponding path program 1 times [2020-11-28 03:15:01,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:01,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916140806] [2020-11-28 03:15:01,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:01,739 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-11-28 03:15:01,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916140806] [2020-11-28 03:15:01,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:15:01,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:15:01,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730335739] [2020-11-28 03:15:01,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:15:01,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:01,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:15:01,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:15:01,741 INFO L87 Difference]: Start difference. First operand 2724 states and 4045 transitions. Second operand 3 states. [2020-11-28 03:15:02,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:02,066 INFO L93 Difference]: Finished difference Result 5522 states and 8175 transitions. [2020-11-28 03:15:02,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:15:02,067 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2020-11-28 03:15:02,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:02,081 INFO L225 Difference]: With dead ends: 5522 [2020-11-28 03:15:02,081 INFO L226 Difference]: Without dead ends: 2806 [2020-11-28 03:15:02,085 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 03:15:02,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2020-11-28 03:15:02,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2724. [2020-11-28 03:15:02,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2724 states. [2020-11-28 03:15:02,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 3957 transitions. [2020-11-28 03:15:02,192 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 3957 transitions. Word has length 164 [2020-11-28 03:15:02,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:02,192 INFO L481 AbstractCegarLoop]: Abstraction has 2724 states and 3957 transitions. [2020-11-28 03:15:02,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:15:02,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 3957 transitions. [2020-11-28 03:15:02,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-11-28 03:15:02,196 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:02,197 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:15:02,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-11-28 03:15:02,197 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:15:02,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:02,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1161445527, now seen corresponding path program 1 times [2020-11-28 03:15:02,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:02,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343058342] [2020-11-28 03:15:02,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:02,243 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-11-28 03:15:02,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343058342] [2020-11-28 03:15:02,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:15:02,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:15:02,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337410447] [2020-11-28 03:15:02,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:15:02,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:02,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:15:02,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:15:02,245 INFO L87 Difference]: Start difference. First operand 2724 states and 3957 transitions. Second operand 3 states. [2020-11-28 03:15:02,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:02,589 INFO L93 Difference]: Finished difference Result 5712 states and 8274 transitions. [2020-11-28 03:15:02,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:15:02,589 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2020-11-28 03:15:02,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:02,614 INFO L225 Difference]: With dead ends: 5712 [2020-11-28 03:15:02,621 INFO L226 Difference]: Without dead ends: 2996 [2020-11-28 03:15:02,625 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 03:15:02,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2996 states. [2020-11-28 03:15:02,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2996 to 2840. [2020-11-28 03:15:02,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2840 states. [2020-11-28 03:15:02,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2840 states to 2840 states and 4045 transitions. [2020-11-28 03:15:02,764 INFO L78 Accepts]: Start accepts. Automaton has 2840 states and 4045 transitions. Word has length 164 [2020-11-28 03:15:02,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:02,764 INFO L481 AbstractCegarLoop]: Abstraction has 2840 states and 4045 transitions. [2020-11-28 03:15:02,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:15:02,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2840 states and 4045 transitions. [2020-11-28 03:15:02,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-11-28 03:15:02,770 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:02,770 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:15:02,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-11-28 03:15:02,771 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:15:02,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:02,771 INFO L82 PathProgramCache]: Analyzing trace with hash -2016709837, now seen corresponding path program 1 times [2020-11-28 03:15:02,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:02,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140016180] [2020-11-28 03:15:02,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:02,848 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 155 proven. 11 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-11-28 03:15:02,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140016180] [2020-11-28 03:15:02,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680490101] [2020-11-28 03:15:02,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f6e7b41-4969-4ff1-94f0-834d4c8f451f/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:15:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:03,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 03:15:03,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:15:03,269 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2020-11-28 03:15:03,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:15:03,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-11-28 03:15:03,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2703580] [2020-11-28 03:15:03,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:15:03,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:03,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:15:03,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:15:03,271 INFO L87 Difference]: Start difference. First operand 2840 states and 4045 transitions. Second operand 3 states. [2020-11-28 03:15:03,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:03,464 INFO L93 Difference]: Finished difference Result 8485 states and 12072 transitions. [2020-11-28 03:15:03,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:15:03,465 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 172 [2020-11-28 03:15:03,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:03,476 INFO L225 Difference]: With dead ends: 8485 [2020-11-28 03:15:03,476 INFO L226 Difference]: Without dead ends: 5653 [2020-11-28 03:15:03,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:15:03,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5653 states. [2020-11-28 03:15:03,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5653 to 5651. [2020-11-28 03:15:03,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5651 states. [2020-11-28 03:15:03,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5651 states to 5651 states and 8034 transitions. [2020-11-28 03:15:03,692 INFO L78 Accepts]: Start accepts. Automaton has 5651 states and 8034 transitions. Word has length 172 [2020-11-28 03:15:03,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:03,692 INFO L481 AbstractCegarLoop]: Abstraction has 5651 states and 8034 transitions. [2020-11-28 03:15:03,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:15:03,692 INFO L276 IsEmpty]: Start isEmpty. Operand 5651 states and 8034 transitions. [2020-11-28 03:15:03,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-11-28 03:15:03,700 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:03,700 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:15:03,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:15:03,913 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:15:03,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:03,914 INFO L82 PathProgramCache]: Analyzing trace with hash 594356241, now seen corresponding path program 1 times [2020-11-28 03:15:03,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:03,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065627699] [2020-11-28 03:15:03,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:04,037 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 155 proven. 11 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-11-28 03:15:04,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065627699] [2020-11-28 03:15:04,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114720105] [2020-11-28 03:15:04,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f6e7b41-4969-4ff1-94f0-834d4c8f451f/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:15:04,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:04,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:15:04,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:15:04,262 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2020-11-28 03:15:04,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:15:04,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-11-28 03:15:04,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241505166] [2020-11-28 03:15:04,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:15:04,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:04,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:15:04,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:15:04,264 INFO L87 Difference]: Start difference. First operand 5651 states and 8034 transitions. Second operand 3 states. [2020-11-28 03:15:04,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:04,711 INFO L93 Difference]: Finished difference Result 11837 states and 16799 transitions. [2020-11-28 03:15:04,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:15:04,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 173 [2020-11-28 03:15:04,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:04,723 INFO L225 Difference]: With dead ends: 11837 [2020-11-28 03:15:04,724 INFO L226 Difference]: Without dead ends: 5995 [2020-11-28 03:15:04,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:15:04,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5995 states. [2020-11-28 03:15:04,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5995 to 5835. [2020-11-28 03:15:04,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5835 states. [2020-11-28 03:15:04,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5835 states to 5835 states and 8266 transitions. [2020-11-28 03:15:04,959 INFO L78 Accepts]: Start accepts. Automaton has 5835 states and 8266 transitions. Word has length 173 [2020-11-28 03:15:04,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:04,960 INFO L481 AbstractCegarLoop]: Abstraction has 5835 states and 8266 transitions. [2020-11-28 03:15:04,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:15:04,960 INFO L276 IsEmpty]: Start isEmpty. Operand 5835 states and 8266 transitions. [2020-11-28 03:15:04,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-11-28 03:15:04,968 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:04,968 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:15:05,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:15:05,181 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:15:05,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:05,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1057591537, now seen corresponding path program 1 times [2020-11-28 03:15:05,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:05,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100804637] [2020-11-28 03:15:05,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:05,249 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 130 proven. 6 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-11-28 03:15:05,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100804637] [2020-11-28 03:15:05,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139134029] [2020-11-28 03:15:05,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f6e7b41-4969-4ff1-94f0-834d4c8f451f/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:15:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:05,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:15:05,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:15:05,464 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-11-28 03:15:05,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:15:05,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-11-28 03:15:05,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760730788] [2020-11-28 03:15:05,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:15:05,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:05,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:15:05,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:15:05,467 INFO L87 Difference]: Start difference. First operand 5835 states and 8266 transitions. Second operand 3 states. [2020-11-28 03:15:05,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:05,893 INFO L93 Difference]: Finished difference Result 10594 states and 14958 transitions. [2020-11-28 03:15:05,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:15:05,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2020-11-28 03:15:05,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:05,904 INFO L225 Difference]: With dead ends: 10594 [2020-11-28 03:15:05,904 INFO L226 Difference]: Without dead ends: 4616 [2020-11-28 03:15:05,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:15:05,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4616 states. [2020-11-28 03:15:06,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4616 to 4472. [2020-11-28 03:15:06,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4472 states. [2020-11-28 03:15:06,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 6325 transitions. [2020-11-28 03:15:06,144 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 6325 transitions. Word has length 174 [2020-11-28 03:15:06,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:06,144 INFO L481 AbstractCegarLoop]: Abstraction has 4472 states and 6325 transitions. [2020-11-28 03:15:06,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:15:06,144 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 6325 transitions. [2020-11-28 03:15:06,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-11-28 03:15:06,155 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:06,156 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 4, 4, 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, 1, 1, 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 03:15:06,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:15:06,369 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:15:06,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:06,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1886384411, now seen corresponding path program 1 times [2020-11-28 03:15:06,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:06,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156104548] [2020-11-28 03:15:06,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:06,473 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 151 proven. 78 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-11-28 03:15:06,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156104548] [2020-11-28 03:15:06,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631011412] [2020-11-28 03:15:06,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f6e7b41-4969-4ff1-94f0-834d4c8f451f/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:15:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:06,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:15:06,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:15:06,689 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-11-28 03:15:06,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:15:06,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2020-11-28 03:15:06,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756526385] [2020-11-28 03:15:06,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:15:06,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:06,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:15:06,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:15:06,691 INFO L87 Difference]: Start difference. First operand 4472 states and 6325 transitions. Second operand 3 states. [2020-11-28 03:15:06,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:06,850 INFO L93 Difference]: Finished difference Result 8871 states and 12552 transitions. [2020-11-28 03:15:06,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:15:06,850 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2020-11-28 03:15:06,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:06,860 INFO L225 Difference]: With dead ends: 8871 [2020-11-28 03:15:06,860 INFO L226 Difference]: Without dead ends: 4474 [2020-11-28 03:15:06,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:15:06,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4474 states. [2020-11-28 03:15:07,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4474 to 4472. [2020-11-28 03:15:07,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4472 states. [2020-11-28 03:15:07,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 6309 transitions. [2020-11-28 03:15:07,026 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 6309 transitions. Word has length 177 [2020-11-28 03:15:07,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:07,026 INFO L481 AbstractCegarLoop]: Abstraction has 4472 states and 6309 transitions. [2020-11-28 03:15:07,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:15:07,027 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 6309 transitions. [2020-11-28 03:15:07,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-11-28 03:15:07,033 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:07,033 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 4, 4, 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, 1, 1, 1, 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 03:15:07,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:15:07,261 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:15:07,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:07,262 INFO L82 PathProgramCache]: Analyzing trace with hash 2144549849, now seen corresponding path program 1 times [2020-11-28 03:15:07,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:07,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922697369] [2020-11-28 03:15:07,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:07,343 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 151 proven. 78 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-11-28 03:15:07,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922697369] [2020-11-28 03:15:07,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746276060] [2020-11-28 03:15:07,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f6e7b41-4969-4ff1-94f0-834d4c8f451f/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:15:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:07,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:15:07,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:15:07,474 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2020-11-28 03:15:07,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:15:07,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2020-11-28 03:15:07,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197697610] [2020-11-28 03:15:07,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:15:07,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:07,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:15:07,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:15:07,477 INFO L87 Difference]: Start difference. First operand 4472 states and 6309 transitions. Second operand 3 states. [2020-11-28 03:15:07,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:07,786 INFO L93 Difference]: Finished difference Result 7804 states and 10978 transitions. [2020-11-28 03:15:07,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:15:07,787 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2020-11-28 03:15:07,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:07,793 INFO L225 Difference]: With dead ends: 7804 [2020-11-28 03:15:07,793 INFO L226 Difference]: Without dead ends: 3299 [2020-11-28 03:15:07,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:15:07,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3299 states. [2020-11-28 03:15:07,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3299 to 3179. [2020-11-28 03:15:07,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3179 states. [2020-11-28 03:15:07,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 4468 transitions. [2020-11-28 03:15:07,974 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 4468 transitions. Word has length 177 [2020-11-28 03:15:07,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:07,975 INFO L481 AbstractCegarLoop]: Abstraction has 3179 states and 4468 transitions. [2020-11-28 03:15:07,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:15:07,975 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 4468 transitions. [2020-11-28 03:15:07,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-11-28 03:15:07,980 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:07,980 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 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, 1, 1, 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 03:15:08,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-11-28 03:15:08,193 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:15:08,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:08,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1199573560, now seen corresponding path program 2 times [2020-11-28 03:15:08,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:08,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337165338] [2020-11-28 03:15:08,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:08,270 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 191 proven. 19 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-11-28 03:15:08,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337165338] [2020-11-28 03:15:08,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180382556] [2020-11-28 03:15:08,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f6e7b41-4969-4ff1-94f0-834d4c8f451f/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:15:08,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-28 03:15:08,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:15:08,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:15:08,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:15:08,383 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2020-11-28 03:15:08,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:15:08,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-11-28 03:15:08,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308847339] [2020-11-28 03:15:08,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:15:08,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:08,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:15:08,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:15:08,386 INFO L87 Difference]: Start difference. First operand 3179 states and 4468 transitions. Second operand 3 states. [2020-11-28 03:15:08,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:08,624 INFO L93 Difference]: Finished difference Result 6415 states and 9031 transitions. [2020-11-28 03:15:08,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:15:08,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2020-11-28 03:15:08,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:08,636 INFO L225 Difference]: With dead ends: 6415 [2020-11-28 03:15:08,637 INFO L226 Difference]: Without dead ends: 3363 [2020-11-28 03:15:08,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:15:08,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3363 states. [2020-11-28 03:15:08,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3363 to 3179. [2020-11-28 03:15:08,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3179 states. [2020-11-28 03:15:08,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 4452 transitions. [2020-11-28 03:15:08,754 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 4452 transitions. Word has length 182 [2020-11-28 03:15:08,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:08,754 INFO L481 AbstractCegarLoop]: Abstraction has 3179 states and 4452 transitions. [2020-11-28 03:15:08,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:15:08,755 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 4452 transitions. [2020-11-28 03:15:08,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-11-28 03:15:08,758 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:08,758 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:15:08,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:15:08,973 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:15:08,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:08,974 INFO L82 PathProgramCache]: Analyzing trace with hash -97142242, now seen corresponding path program 1 times [2020-11-28 03:15:08,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:08,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539650738] [2020-11-28 03:15:08,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:09,072 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 195 proven. 23 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-11-28 03:15:09,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539650738] [2020-11-28 03:15:09,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616654505] [2020-11-28 03:15:09,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f6e7b41-4969-4ff1-94f0-834d4c8f451f/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:15:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:09,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:15:09,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:15:09,201 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2020-11-28 03:15:09,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:15:09,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-11-28 03:15:09,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486448711] [2020-11-28 03:15:09,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:15:09,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:09,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:15:09,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:15:09,204 INFO L87 Difference]: Start difference. First operand 3179 states and 4452 transitions. Second operand 3 states. [2020-11-28 03:15:09,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:09,489 INFO L93 Difference]: Finished difference Result 6311 states and 8831 transitions. [2020-11-28 03:15:09,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:15:09,490 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2020-11-28 03:15:09,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:09,496 INFO L225 Difference]: With dead ends: 6311 [2020-11-28 03:15:09,497 INFO L226 Difference]: Without dead ends: 3275 [2020-11-28 03:15:09,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:15:09,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2020-11-28 03:15:09,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 3179. [2020-11-28 03:15:09,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3179 states. [2020-11-28 03:15:09,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 4436 transitions. [2020-11-28 03:15:09,615 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 4436 transitions. Word has length 184 [2020-11-28 03:15:09,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:09,615 INFO L481 AbstractCegarLoop]: Abstraction has 3179 states and 4436 transitions. [2020-11-28 03:15:09,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:15:09,616 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 4436 transitions. [2020-11-28 03:15:09,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-11-28 03:15:09,619 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:09,619 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:15:09,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-11-28 03:15:09,845 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:15:09,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:09,846 INFO L82 PathProgramCache]: Analyzing trace with hash -301230506, now seen corresponding path program 3 times [2020-11-28 03:15:09,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:09,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516940928] [2020-11-28 03:15:09,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:09,957 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 196 proven. 27 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-11-28 03:15:09,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516940928] [2020-11-28 03:15:09,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052058257] [2020-11-28 03:15:09,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f6e7b41-4969-4ff1-94f0-834d4c8f451f/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:15:10,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-11-28 03:15:10,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:15:10,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 03:15:10,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:15:10,132 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2020-11-28 03:15:10,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:15:10,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2020-11-28 03:15:10,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790771797] [2020-11-28 03:15:10,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:15:10,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:10,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:15:10,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:15:10,134 INFO L87 Difference]: Start difference. First operand 3179 states and 4436 transitions. Second operand 4 states. [2020-11-28 03:15:10,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:10,499 INFO L93 Difference]: Finished difference Result 6549 states and 9060 transitions. [2020-11-28 03:15:10,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:15:10,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 189 [2020-11-28 03:15:10,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:10,507 INFO L225 Difference]: With dead ends: 6549 [2020-11-28 03:15:10,507 INFO L226 Difference]: Without dead ends: 3561 [2020-11-28 03:15:10,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:15:10,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2020-11-28 03:15:10,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 3171. [2020-11-28 03:15:10,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3171 states. [2020-11-28 03:15:10,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3171 states to 3171 states and 4420 transitions. [2020-11-28 03:15:10,664 INFO L78 Accepts]: Start accepts. Automaton has 3171 states and 4420 transitions. Word has length 189 [2020-11-28 03:15:10,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:10,665 INFO L481 AbstractCegarLoop]: Abstraction has 3171 states and 4420 transitions. [2020-11-28 03:15:10,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:15:10,665 INFO L276 IsEmpty]: Start isEmpty. Operand 3171 states and 4420 transitions. [2020-11-28 03:15:10,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-11-28 03:15:10,673 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:10,673 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:15:10,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-11-28 03:15:10,901 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:15:10,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:10,901 INFO L82 PathProgramCache]: Analyzing trace with hash -2051917229, now seen corresponding path program 1 times [2020-11-28 03:15:10,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:10,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473636118] [2020-11-28 03:15:10,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:15:10,976 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:15:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:15:11,040 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:15:11,142 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:15:11,143 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:15:11,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-11-28 03:15:11,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:15:11 BoogieIcfgContainer [2020-11-28 03:15:11,314 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:15:11,315 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:15:11,315 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:15:11,315 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:15:11,316 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:14:52" (3/4) ... [2020-11-28 03:15:11,318 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:15:11,439 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3f6e7b41-4969-4ff1-94f0-834d4c8f451f/bin/uautomizer/witness.graphml [2020-11-28 03:15:11,439 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:15:11,441 INFO L168 Benchmark]: Toolchain (without parser) took 20497.86 ms. Allocated memory was 81.8 MB in the beginning and 828.4 MB in the end (delta: 746.6 MB). Free memory was 49.4 MB in the beginning and 508.2 MB in the end (delta: -458.8 MB). Peak memory consumption was 288.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:11,441 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 81.8 MB. Free memory was 55.4 MB in the beginning and 55.4 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:15:11,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 463.72 ms. Allocated memory is still 81.8 MB. Free memory was 49.1 MB in the beginning and 54.5 MB in the end (delta: -5.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:11,442 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.08 ms. Allocated memory is still 81.8 MB. Free memory was 54.5 MB in the beginning and 51.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:11,442 INFO L168 Benchmark]: Boogie Preprocessor took 51.25 ms. Allocated memory is still 81.8 MB. Free memory was 51.8 MB in the beginning and 49.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:11,443 INFO L168 Benchmark]: RCFGBuilder took 1000.59 ms. Allocated memory was 81.8 MB in the beginning and 100.7 MB in the end (delta: 18.9 MB). Free memory was 49.3 MB in the beginning and 45.0 MB in the end (delta: 4.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:11,443 INFO L168 Benchmark]: TraceAbstraction took 18793.59 ms. Allocated memory was 100.7 MB in the beginning and 828.4 MB in the end (delta: 727.7 MB). Free memory was 44.5 MB in the beginning and 530.2 MB in the end (delta: -485.6 MB). Peak memory consumption was 244.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:11,444 INFO L168 Benchmark]: Witness Printer took 124.45 ms. Allocated memory is still 828.4 MB. Free memory was 530.2 MB in the beginning and 508.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:11,446 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 81.8 MB. Free memory was 55.4 MB in the beginning and 55.4 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 463.72 ms. Allocated memory is still 81.8 MB. Free memory was 49.1 MB in the beginning and 54.5 MB in the end (delta: -5.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.08 ms. Allocated memory is still 81.8 MB. Free memory was 54.5 MB in the beginning and 51.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.25 ms. Allocated memory is still 81.8 MB. Free memory was 51.8 MB in the beginning and 49.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1000.59 ms. Allocated memory was 81.8 MB in the beginning and 100.7 MB in the end (delta: 18.9 MB). Free memory was 49.3 MB in the beginning and 45.0 MB in the end (delta: 4.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 18793.59 ms. Allocated memory was 100.7 MB in the beginning and 828.4 MB in the end (delta: 727.7 MB). Free memory was 44.5 MB in the beginning and 530.2 MB in the end (delta: -485.6 MB). Peak memory consumption was 244.1 MB. Max. memory is 16.1 GB. * Witness Printer took 124.45 ms. Allocated memory is still 828.4 MB. Free memory was 530.2 MB in the beginning and 508.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 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: [L637] int s ; [L638] int tmp ; [L642] s = 8464 [L14] int s__info_callback = __VERIFIER_nondet_int() ; [L15] int s__in_handshake = __VERIFIER_nondet_int() ; [L16] int s__state ; [L17] int s__new_session ; [L18] int s__server ; [L19] int s__version = __VERIFIER_nondet_int() ; [L20] int s__type ; [L21] int s__init_num ; [L22] int s__hit = __VERIFIER_nondet_int() ; [L23] int s__rwstate ; [L24] int s__init_buf___0 = 1; [L25] int s__debug = __VERIFIER_nondet_int() ; [L26] int s__shutdown ; [L27] int s__cert = __VERIFIER_nondet_int() ; [L28] int s__options = __VERIFIER_nondet_int() ; [L29] int s__verify_mode = __VERIFIER_nondet_int() ; [L30] int s__session__peer = __VERIFIER_nondet_int() ; [L31] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L32] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L33] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L34] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L35] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L36] int s__s3__tmp__cert_request ; [L37] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__use_rsa_tmp ; [L39] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L40] int s__s3__tmp__new_cipher__algorithms ; [L41] int s__s3__tmp__next_state___0 ; [L42] int s__s3__tmp__new_cipher__algo_strength ; [L43] int s__session__cipher ; [L44] int buf ; [L45] unsigned long l ; [L46] unsigned long Time ; [L47] unsigned long tmp ; [L48] int cb ; [L49] long num1 = __VERIFIER_nondet_long() ; [L50] int ret ; [L51] int new_state ; [L52] int state ; [L53] int skip ; [L54] int got_new_session ; [L55] int tmp___1 = __VERIFIER_nondet_int() ; [L56] int tmp___2 = __VERIFIER_nondet_int() ; [L57] int tmp___3 = __VERIFIER_nondet_int() ; [L58] int tmp___4 = __VERIFIER_nondet_int() ; [L59] int tmp___5 = __VERIFIER_nondet_int() ; [L60] int tmp___6 = __VERIFIER_nondet_int() ; [L61] int tmp___7 = __VERIFIER_nondet_int() ; [L62] long tmp___8 = __VERIFIER_nondet_long() ; [L63] int tmp___9 = __VERIFIER_nondet_int() ; [L64] int tmp___10 = __VERIFIER_nondet_int() ; [L65] int blastFlag ; [L66] int __cil_tmp55 ; [L67] unsigned long __cil_tmp56 ; [L68] unsigned long __cil_tmp57 ; [L69] unsigned long __cil_tmp58 = __VERIFIER_nondet_ulong() ; [L70] unsigned long __cil_tmp59 ; [L71] int __cil_tmp60 ; [L72] unsigned long __cil_tmp61 ; [L75] s__state = initial_state [L76] blastFlag = 0 [L77] tmp = __VERIFIER_nondet_int() [L78] Time = tmp [L79] cb = 0 [L80] ret = -1 [L81] skip = 0 [L82] got_new_session = 0 [L83] COND TRUE s__info_callback != 0 [L84] cb = s__info_callback [L90] s__in_handshake ++ [L91] COND TRUE tmp___1 + 12288 [L92] COND TRUE tmp___2 + 16384 [L96] COND FALSE !(s__cert == 0) [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND TRUE s__state == 8464 [L273] s__shutdown = 0 [L274] ret = __VERIFIER_nondet_int() [L275] COND TRUE blastFlag == 0 [L276] blastFlag = 1 [L278] COND FALSE !(ret <= 0) [L281] got_new_session = 1 [L282] s__state = 8496 [L283] s__init_num = 0 [L586] COND FALSE !(! s__s3__tmp__reuse_message) [L604] COND FALSE !(state == 8576) [L621] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND FALSE !(s__state == 8464) [L130] COND FALSE !(s__state == 8465) [L133] COND FALSE !(s__state == 8466) [L136] COND TRUE s__state == 8496 [L287] ret = __VERIFIER_nondet_int() [L288] COND TRUE blastFlag == 1 [L289] blastFlag = 2 [L295] COND FALSE !(ret <= 0) [L298] COND FALSE !(\read(s__hit)) [L301] s__state = 8512 [L303] s__init_num = 0 [L586] COND FALSE !(! s__s3__tmp__reuse_message) [L604] COND FALSE !(state == 8576) [L621] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND FALSE !(s__state == 8464) [L130] COND FALSE !(s__state == 8465) [L133] COND FALSE !(s__state == 8466) [L136] COND FALSE !(s__state == 8496) [L139] COND FALSE !(s__state == 8497) [L142] COND TRUE s__state == 8512 [L308] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L309] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L310] COND TRUE __cil_tmp56 + 256UL [L311] skip = 1 [L319] s__state = 8528 [L320] s__init_num = 0 [L586] COND FALSE !(! s__s3__tmp__reuse_message) [L604] COND FALSE !(state == 8576) [L621] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND FALSE !(s__state == 8464) [L130] COND FALSE !(s__state == 8465) [L133] COND FALSE !(s__state == 8466) [L136] COND FALSE !(s__state == 8496) [L139] COND FALSE !(s__state == 8497) [L142] COND FALSE !(s__state == 8512) [L145] COND FALSE !(s__state == 8513) [L148] COND TRUE s__state == 8528 [L324] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L325] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L327] __cil_tmp57 = (unsigned long )s__options [L328] COND TRUE __cil_tmp57 + 2097152UL [L329] s__s3__tmp__use_rsa_tmp = 1 [L334] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L361] ret = __VERIFIER_nondet_int() [L362] COND FALSE !(ret <= 0) [L379] s__state = 8544 [L380] s__init_num = 0 [L586] COND FALSE !(! s__s3__tmp__reuse_message) [L604] COND FALSE !(state == 8576) [L621] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND FALSE !(s__state == 8464) [L130] COND FALSE !(s__state == 8465) [L133] COND FALSE !(s__state == 8466) [L136] COND FALSE !(s__state == 8496) [L139] COND FALSE !(s__state == 8497) [L142] COND FALSE !(s__state == 8512) [L145] COND FALSE !(s__state == 8513) [L148] COND FALSE !(s__state == 8528) [L151] COND FALSE !(s__state == 8529) [L154] COND TRUE s__state == 8544 [L384] COND TRUE s__verify_mode + 1 [L385] COND FALSE !(s__session__peer != 0) [L396] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L397] __cil_tmp61 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L398] COND FALSE !(__cil_tmp61 + 256UL) [L408] s__s3__tmp__cert_request = 1 [L409] ret = __VERIFIER_nondet_int() [L410] COND FALSE !(ret <= 0) [L413] s__state = 8448 [L414] s__s3__tmp__next_state___0 = 8576 [L415] s__init_num = 0 [L586] COND FALSE !(! s__s3__tmp__reuse_message) [L604] COND FALSE !(state == 8576) [L621] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND FALSE !(s__state == 8464) [L130] COND FALSE !(s__state == 8465) [L133] COND FALSE !(s__state == 8466) [L136] COND FALSE !(s__state == 8496) [L139] COND FALSE !(s__state == 8497) [L142] COND FALSE !(s__state == 8512) [L145] COND FALSE !(s__state == 8513) [L148] COND FALSE !(s__state == 8528) [L151] COND FALSE !(s__state == 8529) [L154] COND FALSE !(s__state == 8544) [L157] COND FALSE !(s__state == 8545) [L160] COND FALSE !(s__state == 8560) [L163] COND FALSE !(s__state == 8561) [L166] COND TRUE s__state == 8448 [L436] COND FALSE !(num1 > 0L) [L445] s__state = s__s3__tmp__next_state___0 [L586] COND FALSE !(! s__s3__tmp__reuse_message) [L604] COND FALSE !(state == 8576) [L621] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND FALSE !(s__state == 8464) [L130] COND FALSE !(s__state == 8465) [L133] COND FALSE !(s__state == 8466) [L136] COND FALSE !(s__state == 8496) [L139] COND FALSE !(s__state == 8497) [L142] COND FALSE !(s__state == 8512) [L145] COND FALSE !(s__state == 8513) [L148] COND FALSE !(s__state == 8528) [L151] COND FALSE !(s__state == 8529) [L154] COND FALSE !(s__state == 8544) [L157] COND FALSE !(s__state == 8545) [L160] COND FALSE !(s__state == 8560) [L163] COND FALSE !(s__state == 8561) [L166] COND FALSE !(s__state == 8448) [L169] COND TRUE s__state == 8576 [L449] ret = __VERIFIER_nondet_int() [L450] COND FALSE !(ret <= 0) [L453] COND FALSE !(ret == 2) [L456] ret = __VERIFIER_nondet_int() [L457] COND FALSE !(ret <= 0) [L460] s__init_num = 0 [L461] s__state = 8592 [L586] COND FALSE !(! s__s3__tmp__reuse_message) [L604] COND TRUE state == 8576 [L605] COND TRUE s__state == 8592 [L606] COND TRUE tmp___1 != -12288 [L607] COND TRUE tmp___2 != -16384 [L608] COND TRUE __cil_tmp56 != 4294967040 [L609] COND TRUE __cil_tmp58 != 4294967294 [L610] COND TRUE tmp___7 != 1024 [L611] COND TRUE tmp___7 != 512 [L3] __assert_fail("0", "s3_srvr_11.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 150 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.5s, OverallIterations: 38, TraceHistogramMax: 7, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6459 SDtfs, 5740 SDslu, 2456 SDs, 0 SdLazy, 3268 SolverSat, 1244 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1549 GetRequests, 1488 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5835occurred in iteration=31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.6s AutomataMinimizationTime, 37 MinimizatonAttempts, 1605 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 5451 NumberOfCodeBlocks, 5159 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 5214 ConstructedInterpolants, 0 QuantifiedInterpolants, 1228424 SizeOfPredicates, 8 NumberOfNonLiveVariables, 2643 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 45 InterpolantComputations, 37 PerfectInterpolantSequences, 6988/7241 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...