./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6995ed6ba91d7bb4325b7b2cb6cc1ca7ba7d3a61 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6995ed6ba91d7bb4325b7b2cb6cc1ca7ba7d3a61 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:42:01,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:42:01,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:42:01,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:42:01,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:42:01,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:42:01,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:42:01,134 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:42:01,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:42:01,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:42:01,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:42:01,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:42:01,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:42:01,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:42:01,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:42:01,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:42:01,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:42:01,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:42:01,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:42:01,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:42:01,168 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:42:01,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:42:01,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:42:01,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:42:01,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:42:01,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:42:01,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:42:01,182 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:42:01,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:42:01,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:42:01,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:42:01,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:42:01,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:42:01,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:42:01,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:42:01,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:42:01,191 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:42:01,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:42:01,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:42:01,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:42:01,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:42:01,196 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:42:01,242 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:42:01,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:42:01,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:42:01,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:42:01,244 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:42:01,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:42:01,244 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:42:01,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:42:01,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:42:01,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:42:01,245 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:42:01,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:42:01,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:42:01,245 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:42:01,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:42:01,246 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:42:01,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:42:01,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:42:01,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:42:01,249 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:42:01,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:42:01,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:42:01,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:42:01,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:42:01,250 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:42:01,250 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:42:01,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:42:01,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:42:01,252 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:42:01,252 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_be188ae6-f160-49a9-9d6e-af065b3f00ae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6995ed6ba91d7bb4325b7b2cb6cc1ca7ba7d3a61 [2020-11-30 00:42:01,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:42:01,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:42:01,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:42:01,565 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:42:01,566 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:42:01,566 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c [2020-11-30 00:42:01,637 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/data/9e3e86fda/d92052520b764100a0e0bcf0c5b4b716/FLAGd8851f448 [2020-11-30 00:42:02,068 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:42:02,069 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c [2020-11-30 00:42:02,085 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/data/9e3e86fda/d92052520b764100a0e0bcf0c5b4b716/FLAGd8851f448 [2020-11-30 00:42:02,446 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/data/9e3e86fda/d92052520b764100a0e0bcf0c5b4b716 [2020-11-30 00:42:02,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:42:02,450 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:42:02,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:42:02,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:42:02,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:42:02,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:42:02" (1/1) ... [2020-11-30 00:42:02,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f5bacb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:02, skipping insertion in model container [2020-11-30 00:42:02,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:42:02" (1/1) ... [2020-11-30 00:42:02,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:42:02,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:42:02,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:42:02,805 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:42:02,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:42:02,875 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:42:02,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:02 WrapperNode [2020-11-30 00:42:02,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:42:02,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:42:02,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:42:02,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:42:02,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:02" (1/1) ... [2020-11-30 00:42:02,895 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:02" (1/1) ... [2020-11-30 00:42:02,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:42:02,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:42:02,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:42:02,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:42:02,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:02" (1/1) ... [2020-11-30 00:42:02,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:02" (1/1) ... [2020-11-30 00:42:02,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:02" (1/1) ... [2020-11-30 00:42:02,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:02" (1/1) ... [2020-11-30 00:42:02,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:02" (1/1) ... [2020-11-30 00:42:02,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:02" (1/1) ... [2020-11-30 00:42:02,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:02" (1/1) ... [2020-11-30 00:42:02,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:42:02,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:42:02,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:42:02,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:42:02,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/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 [2020-11-30 00:42:03,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:42:03,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:42:03,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:42:03,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:42:03,177 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-30 00:42:03,872 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-11-30 00:42:03,873 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-11-30 00:42:03,888 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:42:03,889 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 00:42:03,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:42:03 BoogieIcfgContainer [2020-11-30 00:42:03,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:42:03,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:42:03,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:42:03,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:42:03,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:42:02" (1/3) ... [2020-11-30 00:42:03,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c81f521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:42:03, skipping insertion in model container [2020-11-30 00:42:03,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:02" (2/3) ... [2020-11-30 00:42:03,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c81f521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:42:03, skipping insertion in model container [2020-11-30 00:42:03,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:42:03" (3/3) ... [2020-11-30 00:42:03,904 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.BV.c.cil-2a.c [2020-11-30 00:42:03,920 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:42:03,925 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:42:03,943 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:42:03,987 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:42:03,989 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:42:03,989 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:42:03,990 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:42:03,990 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:42:03,990 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:42:03,990 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:42:03,990 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:42:04,005 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states. [2020-11-30 00:42:04,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 00:42:04,012 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:04,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:04,013 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:04,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:04,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1457697026, now seen corresponding path program 1 times [2020-11-30 00:42:04,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:04,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867090786] [2020-11-30 00:42:04,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:04,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:04,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867090786] [2020-11-30 00:42:04,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:04,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:42:04,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064294645] [2020-11-30 00:42:04,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:42:04,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:04,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:42:04,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:04,244 INFO L87 Difference]: Start difference. First operand 126 states. Second operand 3 states. [2020-11-30 00:42:04,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:04,479 INFO L93 Difference]: Finished difference Result 247 states and 422 transitions. [2020-11-30 00:42:04,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:42:04,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-30 00:42:04,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:04,491 INFO L225 Difference]: With dead ends: 247 [2020-11-30 00:42:04,491 INFO L226 Difference]: Without dead ends: 112 [2020-11-30 00:42:04,501 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 [2020-11-30 00:42:04,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-11-30 00:42:04,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-11-30 00:42:04,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-30 00:42:04,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 169 transitions. [2020-11-30 00:42:04,542 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 169 transitions. Word has length 24 [2020-11-30 00:42:04,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:04,542 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 169 transitions. [2020-11-30 00:42:04,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:42:04,543 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 169 transitions. [2020-11-30 00:42:04,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-30 00:42:04,544 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:04,545 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:04,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:42:04,545 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:04,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:04,546 INFO L82 PathProgramCache]: Analyzing trace with hash -611475394, now seen corresponding path program 1 times [2020-11-30 00:42:04,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:04,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473634005] [2020-11-30 00:42:04,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:04,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:04,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473634005] [2020-11-30 00:42:04,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:04,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:42:04,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483331086] [2020-11-30 00:42:04,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:42:04,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:04,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:42:04,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:04,651 INFO L87 Difference]: Start difference. First operand 112 states and 169 transitions. Second operand 3 states. [2020-11-30 00:42:04,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:04,855 INFO L93 Difference]: Finished difference Result 233 states and 356 transitions. [2020-11-30 00:42:04,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:42:04,856 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-11-30 00:42:04,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:04,858 INFO L225 Difference]: With dead ends: 233 [2020-11-30 00:42:04,858 INFO L226 Difference]: Without dead ends: 131 [2020-11-30 00:42:04,860 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 [2020-11-30 00:42:04,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-30 00:42:04,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2020-11-30 00:42:04,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-11-30 00:42:04,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 189 transitions. [2020-11-30 00:42:04,882 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 189 transitions. Word has length 36 [2020-11-30 00:42:04,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:04,883 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 189 transitions. [2020-11-30 00:42:04,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:42:04,884 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 189 transitions. [2020-11-30 00:42:04,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-30 00:42:04,890 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:04,890 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:04,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:42:04,890 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:04,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:04,892 INFO L82 PathProgramCache]: Analyzing trace with hash 213639527, now seen corresponding path program 1 times [2020-11-30 00:42:04,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:04,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995029958] [2020-11-30 00:42:04,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:05,013 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 00:42:05,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995029958] [2020-11-30 00:42:05,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:05,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:42:05,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629686275] [2020-11-30 00:42:05,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:42:05,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:05,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:42:05,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:05,016 INFO L87 Difference]: Start difference. First operand 127 states and 189 transitions. Second operand 3 states. [2020-11-30 00:42:05,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:05,195 INFO L93 Difference]: Finished difference Result 265 states and 400 transitions. [2020-11-30 00:42:05,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:42:05,195 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-11-30 00:42:05,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:05,197 INFO L225 Difference]: With dead ends: 265 [2020-11-30 00:42:05,198 INFO L226 Difference]: Without dead ends: 148 [2020-11-30 00:42:05,199 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 [2020-11-30 00:42:05,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-11-30 00:42:05,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2020-11-30 00:42:05,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-11-30 00:42:05,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 211 transitions. [2020-11-30 00:42:05,220 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 211 transitions. Word has length 50 [2020-11-30 00:42:05,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:05,220 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 211 transitions. [2020-11-30 00:42:05,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:42:05,222 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 211 transitions. [2020-11-30 00:42:05,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-11-30 00:42:05,224 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:05,225 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:05,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:42:05,226 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:05,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:05,226 INFO L82 PathProgramCache]: Analyzing trace with hash 370823208, now seen corresponding path program 1 times [2020-11-30 00:42:05,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:05,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764416217] [2020-11-30 00:42:05,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:05,380 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-30 00:42:05,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764416217] [2020-11-30 00:42:05,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:05,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:42:05,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854032992] [2020-11-30 00:42:05,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:42:05,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:05,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:42:05,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:05,384 INFO L87 Difference]: Start difference. First operand 144 states and 211 transitions. Second operand 3 states. [2020-11-30 00:42:05,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:05,667 INFO L93 Difference]: Finished difference Result 328 states and 496 transitions. [2020-11-30 00:42:05,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:42:05,667 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-11-30 00:42:05,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:05,670 INFO L225 Difference]: With dead ends: 328 [2020-11-30 00:42:05,670 INFO L226 Difference]: Without dead ends: 193 [2020-11-30 00:42:05,671 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 [2020-11-30 00:42:05,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-11-30 00:42:05,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 185. [2020-11-30 00:42:05,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-11-30 00:42:05,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 261 transitions. [2020-11-30 00:42:05,695 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 261 transitions. Word has length 67 [2020-11-30 00:42:05,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:05,698 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 261 transitions. [2020-11-30 00:42:05,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:42:05,698 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 261 transitions. [2020-11-30 00:42:05,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-11-30 00:42:05,705 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:05,705 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:05,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:42:05,706 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:05,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:05,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1434615126, now seen corresponding path program 1 times [2020-11-30 00:42:05,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:05,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270135888] [2020-11-30 00:42:05,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:05,805 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-30 00:42:05,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270135888] [2020-11-30 00:42:05,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:05,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:42:05,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078756383] [2020-11-30 00:42:05,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:42:05,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:05,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:42:05,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:05,808 INFO L87 Difference]: Start difference. First operand 185 states and 261 transitions. Second operand 3 states. [2020-11-30 00:42:05,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:05,982 INFO L93 Difference]: Finished difference Result 383 states and 548 transitions. [2020-11-30 00:42:05,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:42:05,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-11-30 00:42:05,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:05,985 INFO L225 Difference]: With dead ends: 383 [2020-11-30 00:42:05,985 INFO L226 Difference]: Without dead ends: 208 [2020-11-30 00:42:05,986 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 [2020-11-30 00:42:05,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-11-30 00:42:05,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 204. [2020-11-30 00:42:05,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-11-30 00:42:05,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 285 transitions. [2020-11-30 00:42:05,998 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 285 transitions. Word has length 67 [2020-11-30 00:42:05,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:05,998 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 285 transitions. [2020-11-30 00:42:05,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:42:05,998 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 285 transitions. [2020-11-30 00:42:06,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-11-30 00:42:06,000 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:06,000 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:06,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:42:06,000 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:06,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:06,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1023824768, now seen corresponding path program 1 times [2020-11-30 00:42:06,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:06,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426515655] [2020-11-30 00:42:06,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:06,075 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-11-30 00:42:06,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426515655] [2020-11-30 00:42:06,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:06,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:42:06,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290034928] [2020-11-30 00:42:06,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:42:06,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:06,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:42:06,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:06,078 INFO L87 Difference]: Start difference. First operand 204 states and 285 transitions. Second operand 3 states. [2020-11-30 00:42:06,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:06,247 INFO L93 Difference]: Finished difference Result 422 states and 598 transitions. [2020-11-30 00:42:06,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:42:06,248 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-11-30 00:42:06,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:06,250 INFO L225 Difference]: With dead ends: 422 [2020-11-30 00:42:06,250 INFO L226 Difference]: Without dead ends: 228 [2020-11-30 00:42:06,251 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 [2020-11-30 00:42:06,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-11-30 00:42:06,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 225. [2020-11-30 00:42:06,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-11-30 00:42:06,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 311 transitions. [2020-11-30 00:42:06,261 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 311 transitions. Word has length 83 [2020-11-30 00:42:06,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:06,261 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 311 transitions. [2020-11-30 00:42:06,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:42:06,262 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 311 transitions. [2020-11-30 00:42:06,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-30 00:42:06,263 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:06,264 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:06,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 00:42:06,264 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:06,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:06,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1619803512, now seen corresponding path program 1 times [2020-11-30 00:42:06,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:06,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108302379] [2020-11-30 00:42:06,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:06,382 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-30 00:42:06,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108302379] [2020-11-30 00:42:06,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:06,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:42:06,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070400830] [2020-11-30 00:42:06,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:42:06,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:06,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:42:06,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:06,384 INFO L87 Difference]: Start difference. First operand 225 states and 311 transitions. Second operand 3 states. [2020-11-30 00:42:06,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:06,462 INFO L93 Difference]: Finished difference Result 652 states and 903 transitions. [2020-11-30 00:42:06,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:42:06,463 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-11-30 00:42:06,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:06,466 INFO L225 Difference]: With dead ends: 652 [2020-11-30 00:42:06,466 INFO L226 Difference]: Without dead ends: 437 [2020-11-30 00:42:06,467 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 [2020-11-30 00:42:06,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-11-30 00:42:06,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2020-11-30 00:42:06,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-11-30 00:42:06,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 600 transitions. [2020-11-30 00:42:06,481 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 600 transitions. Word has length 103 [2020-11-30 00:42:06,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:06,481 INFO L481 AbstractCegarLoop]: Abstraction has 437 states and 600 transitions. [2020-11-30 00:42:06,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:42:06,481 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 600 transitions. [2020-11-30 00:42:06,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-30 00:42:06,483 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:06,483 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:06,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 00:42:06,484 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:06,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:06,484 INFO L82 PathProgramCache]: Analyzing trace with hash -713589126, now seen corresponding path program 1 times [2020-11-30 00:42:06,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:06,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983289947] [2020-11-30 00:42:06,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:06,542 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-11-30 00:42:06,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983289947] [2020-11-30 00:42:06,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:06,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:42:06,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56344343] [2020-11-30 00:42:06,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:42:06,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:06,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:42:06,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:06,545 INFO L87 Difference]: Start difference. First operand 437 states and 600 transitions. Second operand 3 states. [2020-11-30 00:42:06,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:06,580 INFO L93 Difference]: Finished difference Result 885 states and 1214 transitions. [2020-11-30 00:42:06,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:42:06,581 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-11-30 00:42:06,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:06,584 INFO L225 Difference]: With dead ends: 885 [2020-11-30 00:42:06,584 INFO L226 Difference]: Without dead ends: 458 [2020-11-30 00:42:06,585 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 [2020-11-30 00:42:06,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-11-30 00:42:06,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 458. [2020-11-30 00:42:06,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2020-11-30 00:42:06,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 627 transitions. [2020-11-30 00:42:06,603 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 627 transitions. Word has length 103 [2020-11-30 00:42:06,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:06,605 INFO L481 AbstractCegarLoop]: Abstraction has 458 states and 627 transitions. [2020-11-30 00:42:06,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:42:06,605 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 627 transitions. [2020-11-30 00:42:06,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-11-30 00:42:06,607 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:06,607 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:06,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 00:42:06,607 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:06,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:06,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1034569449, now seen corresponding path program 1 times [2020-11-30 00:42:06,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:06,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376057770] [2020-11-30 00:42:06,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:06,664 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-11-30 00:42:06,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376057770] [2020-11-30 00:42:06,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:06,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:42:06,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804935260] [2020-11-30 00:42:06,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:42:06,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:06,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:42:06,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:06,673 INFO L87 Difference]: Start difference. First operand 458 states and 627 transitions. Second operand 3 states. [2020-11-30 00:42:06,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:06,711 INFO L93 Difference]: Finished difference Result 932 states and 1274 transitions. [2020-11-30 00:42:06,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:42:06,712 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2020-11-30 00:42:06,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:06,716 INFO L225 Difference]: With dead ends: 932 [2020-11-30 00:42:06,716 INFO L226 Difference]: Without dead ends: 484 [2020-11-30 00:42:06,718 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 [2020-11-30 00:42:06,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-11-30 00:42:06,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2020-11-30 00:42:06,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-11-30 00:42:06,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 660 transitions. [2020-11-30 00:42:06,738 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 660 transitions. Word has length 104 [2020-11-30 00:42:06,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:06,739 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 660 transitions. [2020-11-30 00:42:06,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:42:06,739 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 660 transitions. [2020-11-30 00:42:06,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-11-30 00:42:06,741 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:06,741 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:06,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 00:42:06,742 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:06,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:06,742 INFO L82 PathProgramCache]: Analyzing trace with hash -53319870, now seen corresponding path program 1 times [2020-11-30 00:42:06,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:06,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402045264] [2020-11-30 00:42:06,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:06,820 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-11-30 00:42:06,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402045264] [2020-11-30 00:42:06,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:06,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:42:06,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341135976] [2020-11-30 00:42:06,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:42:06,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:06,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:42:06,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:06,830 INFO L87 Difference]: Start difference. First operand 484 states and 660 transitions. Second operand 3 states. [2020-11-30 00:42:06,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:06,877 INFO L93 Difference]: Finished difference Result 699 states and 957 transitions. [2020-11-30 00:42:06,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:42:06,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-11-30 00:42:06,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:06,882 INFO L225 Difference]: With dead ends: 699 [2020-11-30 00:42:06,882 INFO L226 Difference]: Without dead ends: 697 [2020-11-30 00:42:06,882 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 [2020-11-30 00:42:06,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-11-30 00:42:06,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2020-11-30 00:42:06,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-11-30 00:42:06,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 955 transitions. [2020-11-30 00:42:06,906 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 955 transitions. Word has length 105 [2020-11-30 00:42:06,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:06,907 INFO L481 AbstractCegarLoop]: Abstraction has 697 states and 955 transitions. [2020-11-30 00:42:06,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:42:06,907 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 955 transitions. [2020-11-30 00:42:06,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-11-30 00:42:06,910 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:06,910 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:06,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 00:42:06,911 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:06,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:06,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1519363111, now seen corresponding path program 1 times [2020-11-30 00:42:06,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:06,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341025652] [2020-11-30 00:42:06,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:07,017 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-11-30 00:42:07,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341025652] [2020-11-30 00:42:07,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:07,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:42:07,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441351084] [2020-11-30 00:42:07,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:42:07,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:07,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:42:07,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:07,021 INFO L87 Difference]: Start difference. First operand 697 states and 955 transitions. Second operand 3 states. [2020-11-30 00:42:07,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:07,256 INFO L93 Difference]: Finished difference Result 1508 states and 2127 transitions. [2020-11-30 00:42:07,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:42:07,256 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 173 [2020-11-30 00:42:07,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:07,262 INFO L225 Difference]: With dead ends: 1508 [2020-11-30 00:42:07,262 INFO L226 Difference]: Without dead ends: 844 [2020-11-30 00:42:07,264 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 [2020-11-30 00:42:07,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-11-30 00:42:07,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 814. [2020-11-30 00:42:07,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 814 states. [2020-11-30 00:42:07,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1144 transitions. [2020-11-30 00:42:07,288 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1144 transitions. Word has length 173 [2020-11-30 00:42:07,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:07,289 INFO L481 AbstractCegarLoop]: Abstraction has 814 states and 1144 transitions. [2020-11-30 00:42:07,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:42:07,289 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1144 transitions. [2020-11-30 00:42:07,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-11-30 00:42:07,292 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:07,292 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:07,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-30 00:42:07,293 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:07,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:07,293 INFO L82 PathProgramCache]: Analyzing trace with hash -598161639, now seen corresponding path program 2 times [2020-11-30 00:42:07,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:07,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815632047] [2020-11-30 00:42:07,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:07,393 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-11-30 00:42:07,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815632047] [2020-11-30 00:42:07,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:07,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:42:07,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032206633] [2020-11-30 00:42:07,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:42:07,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:07,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:42:07,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:07,396 INFO L87 Difference]: Start difference. First operand 814 states and 1144 transitions. Second operand 3 states. [2020-11-30 00:42:07,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:07,633 INFO L93 Difference]: Finished difference Result 1870 states and 2708 transitions. [2020-11-30 00:42:07,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:42:07,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 185 [2020-11-30 00:42:07,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:07,640 INFO L225 Difference]: With dead ends: 1870 [2020-11-30 00:42:07,641 INFO L226 Difference]: Without dead ends: 1041 [2020-11-30 00:42:07,642 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 [2020-11-30 00:42:07,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2020-11-30 00:42:07,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1003. [2020-11-30 00:42:07,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-11-30 00:42:07,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1396 transitions. [2020-11-30 00:42:07,674 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1396 transitions. Word has length 185 [2020-11-30 00:42:07,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:07,674 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1396 transitions. [2020-11-30 00:42:07,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:42:07,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1396 transitions. [2020-11-30 00:42:07,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-11-30 00:42:07,678 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:07,679 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:07,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-30 00:42:07,679 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:07,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:07,679 INFO L82 PathProgramCache]: Analyzing trace with hash -759567935, now seen corresponding path program 1 times [2020-11-30 00:42:07,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:07,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413539271] [2020-11-30 00:42:07,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:07,855 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-11-30 00:42:07,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413539271] [2020-11-30 00:42:07,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:07,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:42:07,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201148840] [2020-11-30 00:42:07,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:42:07,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:07,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:42:07,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:07,859 INFO L87 Difference]: Start difference. First operand 1003 states and 1396 transitions. Second operand 3 states. [2020-11-30 00:42:07,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:07,908 INFO L93 Difference]: Finished difference Result 2282 states and 3180 transitions. [2020-11-30 00:42:07,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:42:07,909 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2020-11-30 00:42:07,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:07,917 INFO L225 Difference]: With dead ends: 2282 [2020-11-30 00:42:07,917 INFO L226 Difference]: Without dead ends: 1315 [2020-11-30 00:42:07,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:07,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2020-11-30 00:42:07,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1315. [2020-11-30 00:42:07,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1315 states. [2020-11-30 00:42:07,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1828 transitions. [2020-11-30 00:42:07,970 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1828 transitions. Word has length 194 [2020-11-30 00:42:07,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:07,971 INFO L481 AbstractCegarLoop]: Abstraction has 1315 states and 1828 transitions. [2020-11-30 00:42:07,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:42:07,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1828 transitions. [2020-11-30 00:42:07,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-11-30 00:42:07,975 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:07,976 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:07,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-30 00:42:07,976 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:07,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:07,977 INFO L82 PathProgramCache]: Analyzing trace with hash -915330113, now seen corresponding path program 1 times [2020-11-30 00:42:07,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:07,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442527537] [2020-11-30 00:42:07,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:08,096 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-11-30 00:42:08,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442527537] [2020-11-30 00:42:08,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:08,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:42:08,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594685203] [2020-11-30 00:42:08,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:42:08,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:08,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:42:08,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:08,099 INFO L87 Difference]: Start difference. First operand 1315 states and 1828 transitions. Second operand 3 states. [2020-11-30 00:42:08,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:08,168 INFO L93 Difference]: Finished difference Result 3583 states and 5032 transitions. [2020-11-30 00:42:08,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:42:08,169 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2020-11-30 00:42:08,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:08,182 INFO L225 Difference]: With dead ends: 3583 [2020-11-30 00:42:08,183 INFO L226 Difference]: Without dead ends: 2325 [2020-11-30 00:42:08,186 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 [2020-11-30 00:42:08,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2325 states. [2020-11-30 00:42:08,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2325 to 2323. [2020-11-30 00:42:08,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2323 states. [2020-11-30 00:42:08,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 3265 transitions. [2020-11-30 00:42:08,277 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 3265 transitions. Word has length 196 [2020-11-30 00:42:08,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:08,277 INFO L481 AbstractCegarLoop]: Abstraction has 2323 states and 3265 transitions. [2020-11-30 00:42:08,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:42:08,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 3265 transitions. [2020-11-30 00:42:08,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-11-30 00:42:08,282 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:08,283 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:08,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-30 00:42:08,283 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:08,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:08,283 INFO L82 PathProgramCache]: Analyzing trace with hash 342847369, now seen corresponding path program 1 times [2020-11-30 00:42:08,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:08,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105167715] [2020-11-30 00:42:08,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:42:08,354 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:42:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:42:08,442 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:42:08,554 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:42:08,554 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:42:08,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-30 00:42:08,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:42:08 BoogieIcfgContainer [2020-11-30 00:42:08,730 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:42:08,730 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:42:08,730 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:42:08,730 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:42:08,731 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:42:03" (3/4) ... [2020-11-30 00:42:08,734 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:42:08,734 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:42:08,736 INFO L168 Benchmark]: Toolchain (without parser) took 6285.00 ms. Allocated memory was 104.9 MB in the beginning and 151.0 MB in the end (delta: 46.1 MB). Free memory was 67.0 MB in the beginning and 56.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 56.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:08,737 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 104.9 MB. Free memory is still 83.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:42:08,737 INFO L168 Benchmark]: CACSL2BoogieTranslator took 409.76 ms. Allocated memory is still 104.9 MB. Free memory was 66.8 MB in the beginning and 76.5 MB in the end (delta: -9.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:08,738 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.31 ms. Allocated memory is still 104.9 MB. Free memory was 76.5 MB in the beginning and 73.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:08,740 INFO L168 Benchmark]: Boogie Preprocessor took 38.33 ms. Allocated memory is still 104.9 MB. Free memory was 73.5 MB in the beginning and 71.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:08,740 INFO L168 Benchmark]: RCFGBuilder took 910.25 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 71.5 MB in the beginning and 90.2 MB in the end (delta: -18.7 MB). Peak memory consumption was 39.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:08,741 INFO L168 Benchmark]: TraceAbstraction took 4833.03 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 89.9 MB in the beginning and 56.1 MB in the end (delta: 33.8 MB). Peak memory consumption was 59.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:08,741 INFO L168 Benchmark]: Witness Printer took 4.21 ms. Allocated memory is still 151.0 MB. Free memory is still 56.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:42:08,745 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 104.9 MB. Free memory is still 83.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 409.76 ms. Allocated memory is still 104.9 MB. Free memory was 66.8 MB in the beginning and 76.5 MB in the end (delta: -9.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.31 ms. Allocated memory is still 104.9 MB. Free memory was 76.5 MB in the beginning and 73.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.33 ms. Allocated memory is still 104.9 MB. Free memory was 73.5 MB in the beginning and 71.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 910.25 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 71.5 MB in the beginning and 90.2 MB in the end (delta: -18.7 MB). Peak memory consumption was 39.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4833.03 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 89.9 MB in the beginning and 56.1 MB in the end (delta: 33.8 MB). Peak memory consumption was 59.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.21 ms. Allocated memory is still 151.0 MB. Free memory is still 56.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseXor at line 357. Possible FailurePath: [L618] int __retres1 ; [L11] int s__info_callback = __VERIFIER_nondet_int(); [L12] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] unsigned int s__version = __VERIFIER_nondet_uint(); [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int(); [L20] int s__wbio = __VERIFIER_nondet_int(); [L21] int s__hit = __VERIFIER_nondet_int(); [L22] int s__rwstate ; [L23] int s__init_buf___0 ; [L24] int s__debug = __VERIFIER_nondet_int(); [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L27] unsigned int s__ctx__stats__sess_connect_renegotiate ; [L28] unsigned int s__ctx__stats__sess_connect ; [L29] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L30] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags ; [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 ; [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L54] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L55] int tmp___3 = __VERIFIER_nondet_int(); [L56] int tmp___4 = __VERIFIER_nondet_int(); [L57] int tmp___5 = __VERIFIER_nondet_int(); [L58] int tmp___6 = __VERIFIER_nondet_int(); [L59] int tmp___7 = __VERIFIER_nondet_int(); [L60] int tmp___8 = __VERIFIER_nondet_int(); [L61] int tmp___9 = __VERIFIER_nondet_int(); [L62] int blastFlag ; [L63] int ag_X ; [L64] int ag_Y = __VERIFIER_nondet_int(); [L65] int __retres59 ; [L68] s__state = 12292 [L69] blastFlag = 0 [L70] tmp = __VERIFIER_nondet_int() [L71] cb = 0 [L72] ret = -1 [L73] skip = 0 [L74] tmp___0 = 0 [L75] COND TRUE s__info_callback != 0 [L76] cb = s__info_callback [L84] s__in_handshake = s__in_handshake + 1 [L85] COND FALSE !(tmp___1 - 12288) [L95] COND TRUE 1 [L97] state = s__state [L98] COND TRUE s__state == 12292 [L201] s__new_session = 1 [L202] s__state = 4096 [L203] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L208] s__server = 0 [L209] COND TRUE cb != 0 [L214] COND FALSE !(s__version - 65280 != 768) [L220] s__type = 4096 [L221] COND FALSE !(s__init_buf___0 == 0) [L239] COND FALSE !(! tmp___4) [L245] COND FALSE !(! tmp___5) [L251] s__state = 4368 [L252] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L253] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND TRUE s__state == 4368 [L257] s__shutdown = 0 [L258] ret = __VERIFIER_nondet_int() [L259] COND TRUE blastFlag == 0 [L260] blastFlag = 1 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] s__init_num = 0 [L275] COND TRUE s__bbio != s__wbio [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND TRUE s__state == 4384 [L283] ret = __VERIFIER_nondet_int() [L284] COND TRUE blastFlag == 1 [L285] blastFlag = 2 [L289] COND FALSE !(ret <= 0) [L294] COND FALSE !(\read(s__hit)) [L297] s__state = 4400 [L299] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND TRUE s__state == 4400 [L303] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L306] ret = __VERIFIER_nondet_int() [L307] COND TRUE blastFlag == 2 [L308] blastFlag = 3 [L312] COND FALSE !(ret <= 0) [L318] s__state = 4416 [L319] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND TRUE s__state == 4416 [L323] ret = __VERIFIER_nondet_int() [L324] COND TRUE blastFlag == 3 [L325] blastFlag = 4 [L329] COND FALSE !(ret <= 0) [L334] s__state = 4432 [L335] ag_X = (unsigned short)65535 [L336] s__init_num = 0 [L337] COND FALSE !(! tmp___6) [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND FALSE !(s__state == 4416) [L134] COND FALSE !(s__state == 4417) [L137] COND TRUE s__state == 4432 [L346] ret = __VERIFIER_nondet_int() [L347] COND FALSE !(blastFlag == 5) [L352] COND FALSE !(ret <= 0) [L357] s__state = ag_X ^ ag_Y [L358] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND TRUE s__state == 4368 [L257] s__shutdown = 0 [L258] ret = __VERIFIER_nondet_int() [L259] COND FALSE !(blastFlag == 0) [L262] COND TRUE blastFlag == 4 [L263] blastFlag = 5 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] s__init_num = 0 [L275] COND TRUE s__bbio != s__wbio [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND TRUE s__state == 4384 [L283] ret = __VERIFIER_nondet_int() [L284] COND FALSE !(blastFlag == 1) [L289] COND FALSE !(ret <= 0) [L294] COND FALSE !(\read(s__hit)) [L297] s__state = 4400 [L299] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND TRUE s__state == 4400 [L303] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L306] ret = __VERIFIER_nondet_int() [L307] COND FALSE !(blastFlag == 2) [L312] COND FALSE !(ret <= 0) [L318] s__state = 4416 [L319] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND TRUE s__state == 4416 [L323] ret = __VERIFIER_nondet_int() [L324] COND FALSE !(blastFlag == 3) [L329] COND FALSE !(ret <= 0) [L334] s__state = 4432 [L335] ag_X = (unsigned short)65535 [L336] s__init_num = 0 [L337] COND FALSE !(! tmp___6) [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND FALSE !(s__state == 4416) [L134] COND FALSE !(s__state == 4417) [L137] COND TRUE s__state == 4432 [L346] ret = __VERIFIER_nondet_int() [L347] COND TRUE blastFlag == 5 [L3] __assert_fail("0", "s3_clnt_2.BV.c.cil-2a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 126 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.5s, OverallIterations: 15, TraceHistogramMax: 11, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2634 SDtfs, 812 SDslu, 1502 SDs, 0 SdLazy, 896 SolverSat, 173 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2323occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 93 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 1686 NumberOfCodeBlocks, 1686 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1476 ConstructedInterpolants, 0 QuantifiedInterpolants, 447550 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 2791/2791 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:42:11,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:42:11,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:42:11,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:42:11,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:42:11,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:42:11,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:42:11,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:42:11,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:42:11,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:42:11,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:42:11,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:42:11,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:42:11,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:42:11,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:42:11,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:42:11,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:42:11,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:42:11,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:42:11,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:42:11,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:42:11,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:42:11,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:42:11,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:42:11,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:42:11,314 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:42:11,315 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:42:11,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:42:11,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:42:11,317 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:42:11,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:42:11,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:42:11,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:42:11,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:42:11,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:42:11,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:42:11,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:42:11,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:42:11,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:42:11,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:42:11,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:42:11,327 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 00:42:11,374 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:42:11,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:42:11,377 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:42:11,377 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:42:11,377 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:42:11,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:42:11,378 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:42:11,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:42:11,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:42:11,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:42:11,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:42:11,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:42:11,380 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 00:42:11,380 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 00:42:11,380 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:42:11,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:42:11,380 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:42:11,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:42:11,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:42:11,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:42:11,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:42:11,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:42:11,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:42:11,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:42:11,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:42:11,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:42:11,382 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 00:42:11,383 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 00:42:11,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:42:11,393 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:42:11,393 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 00:42:11,394 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6995ed6ba91d7bb4325b7b2cb6cc1ca7ba7d3a61 [2020-11-30 00:42:11,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:42:11,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:42:11,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:42:11,824 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:42:11,824 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:42:11,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c [2020-11-30 00:42:11,902 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/data/a99a14d1d/9f68ca979d134d1ca96a782032d5f8a2/FLAGe6df566ce [2020-11-30 00:42:12,458 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:42:12,468 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c [2020-11-30 00:42:12,491 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/data/a99a14d1d/9f68ca979d134d1ca96a782032d5f8a2/FLAGe6df566ce [2020-11-30 00:42:12,789 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/data/a99a14d1d/9f68ca979d134d1ca96a782032d5f8a2 [2020-11-30 00:42:12,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:42:12,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:42:12,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:42:12,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:42:12,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:42:12,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:42:12" (1/1) ... [2020-11-30 00:42:12,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b5eddac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:12, skipping insertion in model container [2020-11-30 00:42:12,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:42:12" (1/1) ... [2020-11-30 00:42:12,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:42:12,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:42:13,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:42:13,138 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:42:13,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:42:13,224 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:42:13,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:13 WrapperNode [2020-11-30 00:42:13,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:42:13,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:42:13,227 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:42:13,227 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:42:13,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:13" (1/1) ... [2020-11-30 00:42:13,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:13" (1/1) ... [2020-11-30 00:42:13,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:42:13,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:42:13,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:42:13,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:42:13,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:13" (1/1) ... [2020-11-30 00:42:13,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:13" (1/1) ... [2020-11-30 00:42:13,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:13" (1/1) ... [2020-11-30 00:42:13,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:13" (1/1) ... [2020-11-30 00:42:13,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:13" (1/1) ... [2020-11-30 00:42:13,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:13" (1/1) ... [2020-11-30 00:42:13,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:13" (1/1) ... [2020-11-30 00:42:13,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:42:13,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:42:13,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:42:13,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:42:13,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/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 [2020-11-30 00:42:13,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 00:42:13,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:42:13,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:42:13,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:42:13,673 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-30 00:42:14,483 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-11-30 00:42:14,483 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-11-30 00:42:14,493 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:42:14,493 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 00:42:14,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:42:14 BoogieIcfgContainer [2020-11-30 00:42:14,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:42:14,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:42:14,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:42:14,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:42:14,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:42:12" (1/3) ... [2020-11-30 00:42:14,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47df0435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:42:14, skipping insertion in model container [2020-11-30 00:42:14,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:13" (2/3) ... [2020-11-30 00:42:14,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47df0435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:42:14, skipping insertion in model container [2020-11-30 00:42:14,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:42:14" (3/3) ... [2020-11-30 00:42:14,504 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.BV.c.cil-2a.c [2020-11-30 00:42:14,514 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:42:14,518 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:42:14,530 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:42:14,555 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:42:14,556 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:42:14,556 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:42:14,556 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:42:14,556 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:42:14,557 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:42:14,557 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:42:14,557 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:42:14,574 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states. [2020-11-30 00:42:14,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 00:42:14,581 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:14,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:14,582 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:14,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:14,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1457697026, now seen corresponding path program 1 times [2020-11-30 00:42:14,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:42:14,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284919277] [2020-11-30 00:42:14,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 00:42:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:14,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:42:14,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:14,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:14,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:42:14,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:14,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284919277] [2020-11-30 00:42:14,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:14,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 00:42:14,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149957377] [2020-11-30 00:42:14,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:42:14,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:42:14,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:42:14,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:14,890 INFO L87 Difference]: Start difference. First operand 126 states. Second operand 3 states. [2020-11-30 00:42:15,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:15,164 INFO L93 Difference]: Finished difference Result 247 states and 422 transitions. [2020-11-30 00:42:15,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:42:15,166 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-30 00:42:15,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:15,181 INFO L225 Difference]: With dead ends: 247 [2020-11-30 00:42:15,181 INFO L226 Difference]: Without dead ends: 112 [2020-11-30 00:42:15,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:15,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-11-30 00:42:15,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-11-30 00:42:15,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-30 00:42:15,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 169 transitions. [2020-11-30 00:42:15,244 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 169 transitions. Word has length 24 [2020-11-30 00:42:15,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:15,244 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 169 transitions. [2020-11-30 00:42:15,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:42:15,245 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 169 transitions. [2020-11-30 00:42:15,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-30 00:42:15,248 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:15,249 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:15,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 00:42:15,459 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:15,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:15,459 INFO L82 PathProgramCache]: Analyzing trace with hash -611475394, now seen corresponding path program 1 times [2020-11-30 00:42:15,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:42:15,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040128263] [2020-11-30 00:42:15,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 00:42:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:15,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:42:15,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:15,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:15,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:42:15,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:15,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040128263] [2020-11-30 00:42:15,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:15,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 00:42:15,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760982205] [2020-11-30 00:42:15,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:42:15,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:42:15,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:42:15,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:15,597 INFO L87 Difference]: Start difference. First operand 112 states and 169 transitions. Second operand 3 states. [2020-11-30 00:42:15,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:15,785 INFO L93 Difference]: Finished difference Result 233 states and 356 transitions. [2020-11-30 00:42:15,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:42:15,785 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-11-30 00:42:15,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:15,787 INFO L225 Difference]: With dead ends: 233 [2020-11-30 00:42:15,787 INFO L226 Difference]: Without dead ends: 131 [2020-11-30 00:42:15,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:15,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-30 00:42:15,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2020-11-30 00:42:15,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-11-30 00:42:15,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 189 transitions. [2020-11-30 00:42:15,799 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 189 transitions. Word has length 36 [2020-11-30 00:42:15,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:15,799 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 189 transitions. [2020-11-30 00:42:15,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:42:15,799 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 189 transitions. [2020-11-30 00:42:15,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-30 00:42:15,801 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:15,801 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:16,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 00:42:16,007 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:16,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:16,007 INFO L82 PathProgramCache]: Analyzing trace with hash 213639527, now seen corresponding path program 1 times [2020-11-30 00:42:16,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:42:16,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162866588] [2020-11-30 00:42:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 00:42:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:16,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:42:16,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:16,133 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 00:42:16,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:42:16,140 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 00:42:16,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162866588] [2020-11-30 00:42:16,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:16,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 00:42:16,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338918633] [2020-11-30 00:42:16,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:42:16,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:42:16,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:42:16,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:16,143 INFO L87 Difference]: Start difference. First operand 127 states and 189 transitions. Second operand 3 states. [2020-11-30 00:42:16,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:16,351 INFO L93 Difference]: Finished difference Result 265 states and 400 transitions. [2020-11-30 00:42:16,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:42:16,353 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-11-30 00:42:16,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:16,354 INFO L225 Difference]: With dead ends: 265 [2020-11-30 00:42:16,354 INFO L226 Difference]: Without dead ends: 148 [2020-11-30 00:42:16,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:16,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-11-30 00:42:16,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2020-11-30 00:42:16,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-11-30 00:42:16,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 211 transitions. [2020-11-30 00:42:16,370 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 211 transitions. Word has length 50 [2020-11-30 00:42:16,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:16,371 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 211 transitions. [2020-11-30 00:42:16,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:42:16,372 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 211 transitions. [2020-11-30 00:42:16,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-11-30 00:42:16,382 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:16,382 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:16,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 00:42:16,596 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:16,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:16,597 INFO L82 PathProgramCache]: Analyzing trace with hash 370823208, now seen corresponding path program 1 times [2020-11-30 00:42:16,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:42:16,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64539282] [2020-11-30 00:42:16,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 00:42:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:16,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:42:16,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:16,738 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-30 00:42:16,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:42:16,759 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-30 00:42:16,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64539282] [2020-11-30 00:42:16,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:16,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 00:42:16,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891899592] [2020-11-30 00:42:16,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:42:16,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:42:16,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:42:16,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:42:16,762 INFO L87 Difference]: Start difference. First operand 144 states and 211 transitions. Second operand 4 states. [2020-11-30 00:42:17,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:17,218 INFO L93 Difference]: Finished difference Result 349 states and 534 transitions. [2020-11-30 00:42:17,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:42:17,219 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-11-30 00:42:17,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:17,222 INFO L225 Difference]: With dead ends: 349 [2020-11-30 00:42:17,222 INFO L226 Difference]: Without dead ends: 215 [2020-11-30 00:42:17,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:42:17,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-11-30 00:42:17,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 207. [2020-11-30 00:42:17,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-11-30 00:42:17,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 297 transitions. [2020-11-30 00:42:17,239 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 297 transitions. Word has length 67 [2020-11-30 00:42:17,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:17,240 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 297 transitions. [2020-11-30 00:42:17,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:42:17,240 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 297 transitions. [2020-11-30 00:42:17,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-30 00:42:17,241 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:17,241 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:17,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 00:42:17,461 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:17,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:17,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1528022105, now seen corresponding path program 1 times [2020-11-30 00:42:17,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:42:17,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768949465] [2020-11-30 00:42:17,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-30 00:42:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:17,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:42:17,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:17,579 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-30 00:42:17,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:42:17,589 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-30 00:42:17,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768949465] [2020-11-30 00:42:17,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:17,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 00:42:17,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319774847] [2020-11-30 00:42:17,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:42:17,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:42:17,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:42:17,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:17,592 INFO L87 Difference]: Start difference. First operand 207 states and 297 transitions. Second operand 3 states. [2020-11-30 00:42:17,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:17,839 INFO L93 Difference]: Finished difference Result 427 states and 620 transitions. [2020-11-30 00:42:17,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:42:17,839 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-11-30 00:42:17,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:17,841 INFO L225 Difference]: With dead ends: 427 [2020-11-30 00:42:17,842 INFO L226 Difference]: Without dead ends: 230 [2020-11-30 00:42:17,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:17,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-11-30 00:42:17,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 226. [2020-11-30 00:42:17,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-11-30 00:42:17,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 321 transitions. [2020-11-30 00:42:17,857 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 321 transitions. Word has length 68 [2020-11-30 00:42:17,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:17,858 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 321 transitions. [2020-11-30 00:42:17,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:42:17,858 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 321 transitions. [2020-11-30 00:42:17,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-30 00:42:17,860 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:17,860 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:18,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-30 00:42:18,075 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:18,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:18,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1678422895, now seen corresponding path program 1 times [2020-11-30 00:42:18,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:42:18,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291037367] [2020-11-30 00:42:18,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-30 00:42:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:18,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:42:18,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:18,231 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-11-30 00:42:18,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:42:18,263 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-11-30 00:42:18,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291037367] [2020-11-30 00:42:18,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:18,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 00:42:18,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223957023] [2020-11-30 00:42:18,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:42:18,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:42:18,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:42:18,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:18,265 INFO L87 Difference]: Start difference. First operand 226 states and 321 transitions. Second operand 3 states. [2020-11-30 00:42:18,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:18,458 INFO L93 Difference]: Finished difference Result 466 states and 670 transitions. [2020-11-30 00:42:18,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:42:18,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-11-30 00:42:18,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:18,461 INFO L225 Difference]: With dead ends: 466 [2020-11-30 00:42:18,461 INFO L226 Difference]: Without dead ends: 250 [2020-11-30 00:42:18,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:18,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-11-30 00:42:18,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 247. [2020-11-30 00:42:18,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-11-30 00:42:18,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 347 transitions. [2020-11-30 00:42:18,479 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 347 transitions. Word has length 84 [2020-11-30 00:42:18,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:18,480 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 347 transitions. [2020-11-30 00:42:18,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:42:18,480 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 347 transitions. [2020-11-30 00:42:18,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-30 00:42:18,482 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:18,482 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:18,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-30 00:42:18,683 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:18,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:18,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1619803512, now seen corresponding path program 1 times [2020-11-30 00:42:18,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:42:18,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925814082] [2020-11-30 00:42:18,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-30 00:42:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:18,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:42:18,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:18,841 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-30 00:42:18,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:42:18,872 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-30 00:42:18,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925814082] [2020-11-30 00:42:18,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:18,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 00:42:18,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911436309] [2020-11-30 00:42:18,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:42:18,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:42:18,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:42:18,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:42:18,876 INFO L87 Difference]: Start difference. First operand 247 states and 347 transitions. Second operand 4 states. [2020-11-30 00:42:18,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:18,954 INFO L93 Difference]: Finished difference Result 743 states and 1042 transitions. [2020-11-30 00:42:18,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:42:18,954 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-11-30 00:42:18,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:18,960 INFO L225 Difference]: With dead ends: 743 [2020-11-30 00:42:18,960 INFO L226 Difference]: Without dead ends: 506 [2020-11-30 00:42:18,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:42:18,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-11-30 00:42:18,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2020-11-30 00:42:18,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2020-11-30 00:42:18,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 702 transitions. [2020-11-30 00:42:18,997 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 702 transitions. Word has length 103 [2020-11-30 00:42:18,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:18,998 INFO L481 AbstractCegarLoop]: Abstraction has 506 states and 702 transitions. [2020-11-30 00:42:18,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:42:18,998 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 702 transitions. [2020-11-30 00:42:19,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-30 00:42:19,007 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:19,008 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:19,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-30 00:42:19,225 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:19,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:19,225 INFO L82 PathProgramCache]: Analyzing trace with hash -847602632, now seen corresponding path program 1 times [2020-11-30 00:42:19,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:42:19,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511109890] [2020-11-30 00:42:19,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-30 00:42:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:19,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:42:19,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:19,369 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-11-30 00:42:19,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:42:19,384 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-11-30 00:42:19,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511109890] [2020-11-30 00:42:19,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:19,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 00:42:19,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707746249] [2020-11-30 00:42:19,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:42:19,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:42:19,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:42:19,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:19,387 INFO L87 Difference]: Start difference. First operand 506 states and 702 transitions. Second operand 3 states. [2020-11-30 00:42:19,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:19,433 INFO L93 Difference]: Finished difference Result 1023 states and 1418 transitions. [2020-11-30 00:42:19,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:42:19,434 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-11-30 00:42:19,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:19,441 INFO L225 Difference]: With dead ends: 1023 [2020-11-30 00:42:19,442 INFO L226 Difference]: Without dead ends: 527 [2020-11-30 00:42:19,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:19,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2020-11-30 00:42:19,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2020-11-30 00:42:19,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-11-30 00:42:19,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 729 transitions. [2020-11-30 00:42:19,468 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 729 transitions. Word has length 103 [2020-11-30 00:42:19,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:19,470 INFO L481 AbstractCegarLoop]: Abstraction has 527 states and 729 transitions. [2020-11-30 00:42:19,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:42:19,470 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 729 transitions. [2020-11-30 00:42:19,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-11-30 00:42:19,473 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:19,473 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:19,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-30 00:42:19,693 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:19,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:19,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1168582955, now seen corresponding path program 1 times [2020-11-30 00:42:19,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:42:19,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823512417] [2020-11-30 00:42:19,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-11-30 00:42:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:19,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:42:19,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:19,832 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-11-30 00:42:19,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:42:19,846 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-11-30 00:42:19,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823512417] [2020-11-30 00:42:19,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:19,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 00:42:19,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810796658] [2020-11-30 00:42:19,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:42:19,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:42:19,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:42:19,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:19,855 INFO L87 Difference]: Start difference. First operand 527 states and 729 transitions. Second operand 3 states. [2020-11-30 00:42:19,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:19,892 INFO L93 Difference]: Finished difference Result 1070 states and 1478 transitions. [2020-11-30 00:42:19,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:42:19,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2020-11-30 00:42:19,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:19,899 INFO L225 Difference]: With dead ends: 1070 [2020-11-30 00:42:19,899 INFO L226 Difference]: Without dead ends: 553 [2020-11-30 00:42:19,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:19,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-11-30 00:42:19,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2020-11-30 00:42:19,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-11-30 00:42:19,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 762 transitions. [2020-11-30 00:42:19,920 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 762 transitions. Word has length 104 [2020-11-30 00:42:19,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:19,921 INFO L481 AbstractCegarLoop]: Abstraction has 553 states and 762 transitions. [2020-11-30 00:42:19,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:42:19,921 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 762 transitions. [2020-11-30 00:42:19,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-11-30 00:42:19,923 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:19,923 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:20,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-30 00:42:20,134 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:20,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:20,135 INFO L82 PathProgramCache]: Analyzing trace with hash -53319870, now seen corresponding path program 1 times [2020-11-30 00:42:20,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:42:20,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689202142] [2020-11-30 00:42:20,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-11-30 00:42:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:20,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:42:20,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:20,282 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-11-30 00:42:20,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:42:20,308 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-11-30 00:42:20,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689202142] [2020-11-30 00:42:20,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:20,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 00:42:20,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619344489] [2020-11-30 00:42:20,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:42:20,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:42:20,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:42:20,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:42:20,310 INFO L87 Difference]: Start difference. First operand 553 states and 762 transitions. Second operand 4 states. [2020-11-30 00:42:20,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:20,408 INFO L93 Difference]: Finished difference Result 1520 states and 2113 transitions. [2020-11-30 00:42:20,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:42:20,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-11-30 00:42:20,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:20,415 INFO L225 Difference]: With dead ends: 1520 [2020-11-30 00:42:20,415 INFO L226 Difference]: Without dead ends: 1003 [2020-11-30 00:42:20,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:42:20,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2020-11-30 00:42:20,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 1003. [2020-11-30 00:42:20,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-11-30 00:42:20,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1392 transitions. [2020-11-30 00:42:20,450 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1392 transitions. Word has length 105 [2020-11-30 00:42:20,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:20,450 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1392 transitions. [2020-11-30 00:42:20,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:42:20,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1392 transitions. [2020-11-30 00:42:20,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-11-30 00:42:20,458 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:20,458 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:20,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-11-30 00:42:20,698 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:20,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:20,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1519363111, now seen corresponding path program 1 times [2020-11-30 00:42:20,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:42:20,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148458967] [2020-11-30 00:42:20,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-11-30 00:42:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:20,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:42:20,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:20,876 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-11-30 00:42:20,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:42:20,916 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-11-30 00:42:20,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148458967] [2020-11-30 00:42:20,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:20,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 00:42:20,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124257689] [2020-11-30 00:42:20,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:42:20,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:42:20,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:42:20,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:42:20,919 INFO L87 Difference]: Start difference. First operand 1003 states and 1392 transitions. Second operand 4 states. [2020-11-30 00:42:21,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:21,257 INFO L93 Difference]: Finished difference Result 2091 states and 2938 transitions. [2020-11-30 00:42:21,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:42:21,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2020-11-30 00:42:21,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:21,264 INFO L225 Difference]: With dead ends: 2091 [2020-11-30 00:42:21,264 INFO L226 Difference]: Without dead ends: 1124 [2020-11-30 00:42:21,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:42:21,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2020-11-30 00:42:21,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1095. [2020-11-30 00:42:21,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1095 states. [2020-11-30 00:42:21,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1500 transitions. [2020-11-30 00:42:21,304 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1500 transitions. Word has length 173 [2020-11-30 00:42:21,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:21,305 INFO L481 AbstractCegarLoop]: Abstraction has 1095 states and 1500 transitions. [2020-11-30 00:42:21,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:42:21,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1500 transitions. [2020-11-30 00:42:21,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-11-30 00:42:21,309 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:21,309 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:21,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-11-30 00:42:21,526 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:21,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:21,526 INFO L82 PathProgramCache]: Analyzing trace with hash -759567935, now seen corresponding path program 1 times [2020-11-30 00:42:21,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:42:21,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893798707] [2020-11-30 00:42:21,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-11-30 00:42:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:21,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:42:21,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:21,729 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-11-30 00:42:21,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:42:21,795 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-11-30 00:42:21,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893798707] [2020-11-30 00:42:21,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:21,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 00:42:21,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951060554] [2020-11-30 00:42:21,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:42:21,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:42:21,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:42:21,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:21,798 INFO L87 Difference]: Start difference. First operand 1095 states and 1500 transitions. Second operand 3 states. [2020-11-30 00:42:21,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:21,851 INFO L93 Difference]: Finished difference Result 2409 states and 3304 transitions. [2020-11-30 00:42:21,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:42:21,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2020-11-30 00:42:21,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:21,859 INFO L225 Difference]: With dead ends: 2409 [2020-11-30 00:42:21,860 INFO L226 Difference]: Without dead ends: 1350 [2020-11-30 00:42:21,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:21,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2020-11-30 00:42:21,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 1350. [2020-11-30 00:42:21,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1350 states. [2020-11-30 00:42:21,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 1847 transitions. [2020-11-30 00:42:21,912 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 1847 transitions. Word has length 194 [2020-11-30 00:42:21,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:21,912 INFO L481 AbstractCegarLoop]: Abstraction has 1350 states and 1847 transitions. [2020-11-30 00:42:21,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:42:21,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 1847 transitions. [2020-11-30 00:42:21,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-11-30 00:42:21,917 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:21,917 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:22,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-11-30 00:42:22,133 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:22,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:22,134 INFO L82 PathProgramCache]: Analyzing trace with hash 342847369, now seen corresponding path program 1 times [2020-11-30 00:42:22,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:42:22,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772702453] [2020-11-30 00:42:22,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-11-30 00:42:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:42:22,278 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:42:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:42:22,388 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:42:22,713 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-30 00:42:22,713 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:42:22,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-11-30 00:42:23,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:42:23 BoogieIcfgContainer [2020-11-30 00:42:23,079 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:42:23,080 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:42:23,080 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:42:23,080 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:42:23,081 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:42:14" (3/4) ... [2020-11-30 00:42:23,082 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:42:23,255 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_be188ae6-f160-49a9-9d6e-af065b3f00ae/bin/uautomizer/witness.graphml [2020-11-30 00:42:23,255 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:42:23,257 INFO L168 Benchmark]: Toolchain (without parser) took 10462.86 ms. Allocated memory was 69.2 MB in the beginning and 146.8 MB in the end (delta: 77.6 MB). Free memory was 54.2 MB in the beginning and 82.8 MB in the end (delta: -28.6 MB). Peak memory consumption was 48.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:23,258 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 69.2 MB. Free memory is still 52.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:42:23,258 INFO L168 Benchmark]: CACSL2BoogieTranslator took 430.86 ms. Allocated memory is still 69.2 MB. Free memory was 54.0 MB in the beginning and 50.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:23,259 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.30 ms. Allocated memory is still 69.2 MB. Free memory was 50.3 MB in the beginning and 47.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:23,259 INFO L168 Benchmark]: Boogie Preprocessor took 54.30 ms. Allocated memory is still 69.2 MB. Free memory was 47.9 MB in the beginning and 45.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:23,260 INFO L168 Benchmark]: RCFGBuilder took 1165.25 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 45.8 MB in the beginning and 60.0 MB in the end (delta: -14.2 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:23,260 INFO L168 Benchmark]: TraceAbstraction took 8581.82 ms. Allocated memory was 83.9 MB in the beginning and 146.8 MB in the end (delta: 62.9 MB). Free memory was 59.5 MB in the beginning and 103.8 MB in the end (delta: -44.3 MB). Peak memory consumption was 83.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:23,260 INFO L168 Benchmark]: Witness Printer took 175.79 ms. Allocated memory is still 146.8 MB. Free memory was 103.8 MB in the beginning and 82.8 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:23,262 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 69.2 MB. Free memory is still 52.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 430.86 ms. Allocated memory is still 69.2 MB. Free memory was 54.0 MB in the beginning and 50.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.30 ms. Allocated memory is still 69.2 MB. Free memory was 50.3 MB in the beginning and 47.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.30 ms. Allocated memory is still 69.2 MB. Free memory was 47.9 MB in the beginning and 45.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1165.25 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 45.8 MB in the beginning and 60.0 MB in the end (delta: -14.2 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8581.82 ms. Allocated memory was 83.9 MB in the beginning and 146.8 MB in the end (delta: 62.9 MB). Free memory was 59.5 MB in the beginning and 103.8 MB in the end (delta: -44.3 MB). Peak memory consumption was 83.4 MB. Max. memory is 16.1 GB. * Witness Printer took 175.79 ms. Allocated memory is still 146.8 MB. Free memory was 103.8 MB in the beginning and 82.8 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L618] int __retres1 ; [L11] int s__info_callback = __VERIFIER_nondet_int(); [L12] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] unsigned int s__version = __VERIFIER_nondet_uint(); [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int(); [L20] int s__wbio = __VERIFIER_nondet_int(); [L21] int s__hit = __VERIFIER_nondet_int(); [L22] int s__rwstate ; [L23] int s__init_buf___0 ; [L24] int s__debug = __VERIFIER_nondet_int(); [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L27] unsigned int s__ctx__stats__sess_connect_renegotiate ; [L28] unsigned int s__ctx__stats__sess_connect ; [L29] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L30] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags ; [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 ; [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L54] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L55] int tmp___3 = __VERIFIER_nondet_int(); [L56] int tmp___4 = __VERIFIER_nondet_int(); [L57] int tmp___5 = __VERIFIER_nondet_int(); [L58] int tmp___6 = __VERIFIER_nondet_int(); [L59] int tmp___7 = __VERIFIER_nondet_int(); [L60] int tmp___8 = __VERIFIER_nondet_int(); [L61] int tmp___9 = __VERIFIER_nondet_int(); [L62] int blastFlag ; [L63] int ag_X ; [L64] int ag_Y = __VERIFIER_nondet_int(); [L65] int __retres59 ; [L68] s__state = 12292 [L69] blastFlag = 0 [L70] tmp = __VERIFIER_nondet_int() [L71] cb = 0 [L72] ret = -1 [L73] skip = 0 [L74] tmp___0 = 0 [L75] COND TRUE s__info_callback != 0 [L76] cb = s__info_callback [L84] s__in_handshake = s__in_handshake + 1 [L85] COND FALSE !(tmp___1 - 12288) [L95] COND TRUE 1 [L97] state = s__state [L98] COND TRUE s__state == 12292 [L201] s__new_session = 1 [L202] s__state = 4096 [L203] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L208] s__server = 0 [L209] COND TRUE cb != 0 [L214] COND FALSE !(s__version - 65280 != 768) [L220] s__type = 4096 [L221] COND FALSE !(s__init_buf___0 == 0) [L239] COND FALSE !(! tmp___4) [L245] COND FALSE !(! tmp___5) [L251] s__state = 4368 [L252] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L253] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND TRUE s__state == 4368 [L257] s__shutdown = 0 [L258] ret = __VERIFIER_nondet_int() [L259] COND TRUE blastFlag == 0 [L260] blastFlag = 1 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] s__init_num = 0 [L275] COND TRUE s__bbio != s__wbio [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND TRUE s__state == 4384 [L283] ret = __VERIFIER_nondet_int() [L284] COND TRUE blastFlag == 1 [L285] blastFlag = 2 [L289] COND FALSE !(ret <= 0) [L294] COND FALSE !(\read(s__hit)) [L297] s__state = 4400 [L299] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND TRUE s__state == 4400 [L303] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L306] ret = __VERIFIER_nondet_int() [L307] COND TRUE blastFlag == 2 [L308] blastFlag = 3 [L312] COND FALSE !(ret <= 0) [L318] s__state = 4416 [L319] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND TRUE s__state == 4416 [L323] ret = __VERIFIER_nondet_int() [L324] COND TRUE blastFlag == 3 [L325] blastFlag = 4 [L329] COND FALSE !(ret <= 0) [L334] s__state = 4432 [L335] ag_X = (unsigned short)65535 [L336] s__init_num = 0 [L337] COND FALSE !(! tmp___6) [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND FALSE !(s__state == 4416) [L134] COND FALSE !(s__state == 4417) [L137] COND TRUE s__state == 4432 [L346] ret = __VERIFIER_nondet_int() [L347] COND FALSE !(blastFlag == 5) [L352] COND FALSE !(ret <= 0) [L357] s__state = ag_X ^ ag_Y [L358] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND TRUE s__state == 4368 [L257] s__shutdown = 0 [L258] ret = __VERIFIER_nondet_int() [L259] COND FALSE !(blastFlag == 0) [L262] COND TRUE blastFlag == 4 [L263] blastFlag = 5 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] s__init_num = 0 [L275] COND TRUE s__bbio != s__wbio [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND TRUE s__state == 4384 [L283] ret = __VERIFIER_nondet_int() [L284] COND FALSE !(blastFlag == 1) [L289] COND FALSE !(ret <= 0) [L294] COND FALSE !(\read(s__hit)) [L297] s__state = 4400 [L299] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND TRUE s__state == 4400 [L303] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L306] ret = __VERIFIER_nondet_int() [L307] COND FALSE !(blastFlag == 2) [L312] COND FALSE !(ret <= 0) [L318] s__state = 4416 [L319] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND TRUE s__state == 4416 [L323] ret = __VERIFIER_nondet_int() [L324] COND FALSE !(blastFlag == 3) [L329] COND FALSE !(ret <= 0) [L334] s__state = 4432 [L335] ag_X = (unsigned short)65535 [L336] s__init_num = 0 [L337] COND FALSE !(! tmp___6) [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND FALSE !(s__state == 4416) [L134] COND FALSE !(s__state == 4417) [L137] COND TRUE s__state == 4432 [L346] ret = __VERIFIER_nondet_int() [L347] COND TRUE blastFlag == 5 [L3] __assert_fail("0", "s3_clnt_2.BV.c.cil-2a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 126 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.3s, OverallIterations: 13, TraceHistogramMax: 11, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2289 SDtfs, 1139 SDslu, 1557 SDs, 0 SdLazy, 931 SolverSat, 167 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2198 GetRequests, 2182 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1350occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 52 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 1307 NumberOfCodeBlocks, 1307 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2198 ConstructedInterpolants, 0 QuantifiedInterpolants, 431278 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1930 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 24 InterpolantComputations, 24 PerfectInterpolantSequences, 3576/3576 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...