./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_clnt.blast.02.i.cil-1.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_273a1685-cd89-4096-9fbe-dd2ac90b10af/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_clnt.blast.02.i.cil-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/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 bbd47246d88fcb39767f657e10b2743b89754c4e ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_273a1685-cd89-4096-9fbe-dd2ac90b10af/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_clnt.blast.02.i.cil-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/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 bbd47246d88fcb39767f657e10b2743b89754c4e ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-11-29 20:18:51,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:18:51,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:18:51,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:18:51,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:18:51,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:18:51,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:18:51,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:18:51,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:18:51,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:18:51,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:18:51,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:18:51,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:18:51,203 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:18:51,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:18:51,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:18:51,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:18:51,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:18:51,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:18:51,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:18:51,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:18:51,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:18:51,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:18:51,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:18:51,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:18:51,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:18:51,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:18:51,251 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:18:51,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:18:51,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:18:51,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:18:51,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:18:51,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:18:51,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:18:51,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:18:51,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:18:51,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:18:51,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:18:51,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:18:51,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:18:51,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:18:51,270 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:18:51,328 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:18:51,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:18:51,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:18:51,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:18:51,332 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:18:51,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:18:51,333 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:18:51,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:18:51,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:18:51,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:18:51,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:18:51,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:18:51,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:18:51,336 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:18:51,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:18:51,337 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:18:51,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:18:51,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:18:51,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:18:51,338 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:18:51,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:18:51,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:18:51,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:18:51,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:18:51,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:18:51,349 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:18:51,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:18:51,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:18:51,350 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:18:51,350 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_273a1685-cd89-4096-9fbe-dd2ac90b10af/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bbd47246d88fcb39767f657e10b2743b89754c4e [2020-11-29 20:18:51,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:18:51,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:18:51,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:18:51,809 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:18:51,811 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:18:51,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/bin/uautomizer/../../sv-benchmarks/c/openssl/s3_clnt.blast.02.i.cil-1.c [2020-11-29 20:18:51,900 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/bin/uautomizer/data/a676e25d2/a26fdedd5430407ca8205215ae94b422/FLAG89b945625 [2020-11-29 20:18:52,882 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:18:52,888 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/sv-benchmarks/c/openssl/s3_clnt.blast.02.i.cil-1.c [2020-11-29 20:18:52,917 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/bin/uautomizer/data/a676e25d2/a26fdedd5430407ca8205215ae94b422/FLAG89b945625 [2020-11-29 20:18:52,989 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/bin/uautomizer/data/a676e25d2/a26fdedd5430407ca8205215ae94b422 [2020-11-29 20:18:52,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:18:52,994 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:18:53,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:18:53,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:18:53,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:18:53,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:18:52" (1/1) ... [2020-11-29 20:18:53,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28bcd9e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:18:53, skipping insertion in model container [2020-11-29 20:18:53,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:18:52" (1/1) ... [2020-11-29 20:18:53,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:18:53,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:18:53,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:18:53,683 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:18:53,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:18:53,939 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:18:53,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:18:53 WrapperNode [2020-11-29 20:18:53,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:18:53,943 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:18:53,943 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:18:53,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:18:53,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:18:53" (1/1) ... [2020-11-29 20:18:54,008 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:18:53" (1/1) ... [2020-11-29 20:18:54,077 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:18:54,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:18:54,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:18:54,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:18:54,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:18:53" (1/1) ... [2020-11-29 20:18:54,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:18:53" (1/1) ... [2020-11-29 20:18:54,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:18:53" (1/1) ... [2020-11-29 20:18:54,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:18:53" (1/1) ... [2020-11-29 20:18:54,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:18:53" (1/1) ... [2020-11-29 20:18:54,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:18:53" (1/1) ... [2020-11-29 20:18:54,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:18:53" (1/1) ... [2020-11-29 20:18:54,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:18:54,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:18:54,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:18:54,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:18:54,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:18:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/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 [2020-11-29 20:18:54,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 20:18:54,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:18:54,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 20:18:54,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 20:18:54,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 20:18:54,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:18:54,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 20:18:54,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:18:54,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:18:54,740 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-29 20:18:56,253 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-11-29 20:18:56,253 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-11-29 20:18:56,265 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:18:56,266 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 20:18:56,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:18:56 BoogieIcfgContainer [2020-11-29 20:18:56,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:18:56,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:18:56,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:18:56,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:18:56,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:18:52" (1/3) ... [2020-11-29 20:18:56,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42049217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:18:56, skipping insertion in model container [2020-11-29 20:18:56,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:18:53" (2/3) ... [2020-11-29 20:18:56,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42049217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:18:56, skipping insertion in model container [2020-11-29 20:18:56,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:18:56" (3/3) ... [2020-11-29 20:18:56,285 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.02.i.cil-1.c [2020-11-29 20:18:56,301 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:18:56,307 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:18:56,324 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 20:18:56,379 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:18:56,380 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:18:56,380 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:18:56,380 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:18:56,380 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:18:56,381 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:18:56,381 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:18:56,381 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:18:56,411 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states. [2020-11-29 20:18:56,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 20:18:56,422 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:18:56,424 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] [2020-11-29 20:18:56,425 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:18:56,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:18:56,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1457695037, now seen corresponding path program 1 times [2020-11-29 20:18:56,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:18:56,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289696019] [2020-11-29 20:18:56,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:18:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:18:56,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:18:56,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289696019] [2020-11-29 20:18:56,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:18:56,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:18:56,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360583367] [2020-11-29 20:18:56,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:18:56,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:18:56,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:18:56,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:18:56,967 INFO L87 Difference]: Start difference. First operand 130 states. Second operand 4 states. [2020-11-29 20:18:57,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:18:57,740 INFO L93 Difference]: Finished difference Result 256 states and 431 transitions. [2020-11-29 20:18:57,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:18:57,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-29 20:18:57,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:18:57,772 INFO L225 Difference]: With dead ends: 256 [2020-11-29 20:18:57,772 INFO L226 Difference]: Without dead ends: 116 [2020-11-29 20:18:57,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:18:57,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-29 20:18:57,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2020-11-29 20:18:57,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-11-29 20:18:57,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 172 transitions. [2020-11-29 20:18:57,862 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 172 transitions. Word has length 24 [2020-11-29 20:18:57,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:18:57,866 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 172 transitions. [2020-11-29 20:18:57,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:18:57,867 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 172 transitions. [2020-11-29 20:18:57,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-29 20:18:57,870 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:18:57,871 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, 1, 1] [2020-11-29 20:18:57,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:18:57,871 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:18:57,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:18:57,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1001988123, now seen corresponding path program 1 times [2020-11-29 20:18:57,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:18:57,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359295817] [2020-11-29 20:18:57,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:18:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:18:58,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 20:18:58,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359295817] [2020-11-29 20:18:58,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:18:58,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:18:58,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526652594] [2020-11-29 20:18:58,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:18:58,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:18:58,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:18:58,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:18:58,147 INFO L87 Difference]: Start difference. First operand 115 states and 172 transitions. Second operand 3 states. [2020-11-29 20:18:58,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:18:58,242 INFO L93 Difference]: Finished difference Result 320 states and 482 transitions. [2020-11-29 20:18:58,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:18:58,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-11-29 20:18:58,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:18:58,247 INFO L225 Difference]: With dead ends: 320 [2020-11-29 20:18:58,248 INFO L226 Difference]: Without dead ends: 215 [2020-11-29 20:18:58,250 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 [2020-11-29 20:18:58,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-11-29 20:18:58,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2020-11-29 20:18:58,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-11-29 20:18:58,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 319 transitions. [2020-11-29 20:18:58,277 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 319 transitions. Word has length 38 [2020-11-29 20:18:58,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:18:58,278 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 319 transitions. [2020-11-29 20:18:58,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:18:58,278 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 319 transitions. [2020-11-29 20:18:58,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-29 20:18:58,289 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:18:58,290 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:18:58,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:18:58,290 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:18:58,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:18:58,292 INFO L82 PathProgramCache]: Analyzing trace with hash 996888307, now seen corresponding path program 1 times [2020-11-29 20:18:58,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:18:58,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631383662] [2020-11-29 20:18:58,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:18:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:18:58,517 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 20:18:58,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631383662] [2020-11-29 20:18:58,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:18:58,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:18:58,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716849239] [2020-11-29 20:18:58,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:18:58,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:18:58,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:18:58,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:18:58,521 INFO L87 Difference]: Start difference. First operand 215 states and 319 transitions. Second operand 3 states. [2020-11-29 20:18:58,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:18:58,691 INFO L93 Difference]: Finished difference Result 420 states and 630 transitions. [2020-11-29 20:18:58,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:18:58,693 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-11-29 20:18:58,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:18:58,699 INFO L225 Difference]: With dead ends: 420 [2020-11-29 20:18:58,700 INFO L226 Difference]: Without dead ends: 315 [2020-11-29 20:18:58,701 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 [2020-11-29 20:18:58,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-11-29 20:18:58,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2020-11-29 20:18:58,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-11-29 20:18:58,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 466 transitions. [2020-11-29 20:18:58,753 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 466 transitions. Word has length 53 [2020-11-29 20:18:58,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:18:58,754 INFO L481 AbstractCegarLoop]: Abstraction has 315 states and 466 transitions. [2020-11-29 20:18:58,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:18:58,755 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 466 transitions. [2020-11-29 20:18:58,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-29 20:18:58,770 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:18:58,770 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:18:58,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:18:58,770 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:18:58,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:18:58,771 INFO L82 PathProgramCache]: Analyzing trace with hash -973367758, now seen corresponding path program 1 times [2020-11-29 20:18:58,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:18:58,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746258895] [2020-11-29 20:18:58,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:18:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:18:58,982 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 20:18:58,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746258895] [2020-11-29 20:18:58,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:18:58,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:18:58,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589342496] [2020-11-29 20:18:58,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:18:58,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:18:58,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:18:58,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:18:58,986 INFO L87 Difference]: Start difference. First operand 315 states and 466 transitions. Second operand 4 states. [2020-11-29 20:18:59,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:18:59,991 INFO L93 Difference]: Finished difference Result 805 states and 1196 transitions. [2020-11-29 20:18:59,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:18:59,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-11-29 20:18:59,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:18:59,998 INFO L225 Difference]: With dead ends: 805 [2020-11-29 20:18:59,998 INFO L226 Difference]: Without dead ends: 500 [2020-11-29 20:19:00,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:19:00,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-11-29 20:19:00,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 365. [2020-11-29 20:19:00,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-11-29 20:19:00,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 552 transitions. [2020-11-29 20:19:00,054 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 552 transitions. Word has length 71 [2020-11-29 20:19:00,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:19:00,055 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 552 transitions. [2020-11-29 20:19:00,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:19:00,056 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 552 transitions. [2020-11-29 20:19:00,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-29 20:19:00,066 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:19:00,067 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:19:00,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:19:00,069 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:19:00,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:19:00,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1107381264, now seen corresponding path program 1 times [2020-11-29 20:19:00,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:19:00,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936048182] [2020-11-29 20:19:00,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:19:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:19:00,280 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 20:19:00,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936048182] [2020-11-29 20:19:00,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:19:00,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:19:00,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433119237] [2020-11-29 20:19:00,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:19:00,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:19:00,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:19:00,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:19:00,284 INFO L87 Difference]: Start difference. First operand 365 states and 552 transitions. Second operand 4 states. [2020-11-29 20:19:00,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:19:00,981 INFO L93 Difference]: Finished difference Result 805 states and 1217 transitions. [2020-11-29 20:19:00,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:19:00,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-11-29 20:19:00,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:19:00,986 INFO L225 Difference]: With dead ends: 805 [2020-11-29 20:19:00,987 INFO L226 Difference]: Without dead ends: 450 [2020-11-29 20:19:00,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:19:00,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-11-29 20:19:01,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 405. [2020-11-29 20:19:01,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-11-29 20:19:01,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 620 transitions. [2020-11-29 20:19:01,023 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 620 transitions. Word has length 71 [2020-11-29 20:19:01,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:19:01,024 INFO L481 AbstractCegarLoop]: Abstraction has 405 states and 620 transitions. [2020-11-29 20:19:01,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:19:01,025 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 620 transitions. [2020-11-29 20:19:01,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-11-29 20:19:01,028 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:19:01,029 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:19:01,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 20:19:01,029 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:19:01,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:19:01,030 INFO L82 PathProgramCache]: Analyzing trace with hash -114315255, now seen corresponding path program 1 times [2020-11-29 20:19:01,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:19:01,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173759839] [2020-11-29 20:19:01,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:19:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:19:01,153 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 20:19:01,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173759839] [2020-11-29 20:19:01,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:19:01,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:19:01,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540745147] [2020-11-29 20:19:01,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:19:01,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:19:01,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:19:01,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:19:01,157 INFO L87 Difference]: Start difference. First operand 405 states and 620 transitions. Second operand 4 states. [2020-11-29 20:19:02,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:19:02,141 INFO L93 Difference]: Finished difference Result 927 states and 1408 transitions. [2020-11-29 20:19:02,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:19:02,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-11-29 20:19:02,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:19:02,150 INFO L225 Difference]: With dead ends: 927 [2020-11-29 20:19:02,153 INFO L226 Difference]: Without dead ends: 532 [2020-11-29 20:19:02,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:19:02,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-11-29 20:19:02,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 407. [2020-11-29 20:19:02,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 20:19:02,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 622 transitions. [2020-11-29 20:19:02,182 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 622 transitions. Word has length 72 [2020-11-29 20:19:02,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:19:02,185 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 622 transitions. [2020-11-29 20:19:02,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:19:02,185 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 622 transitions. [2020-11-29 20:19:02,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-29 20:19:02,198 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:19:02,199 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-11-29 20:19:02,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 20:19:02,200 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:19:02,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:19:02,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1902129482, now seen corresponding path program 2 times [2020-11-29 20:19:02,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:19:02,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48951965] [2020-11-29 20:19:02,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:19:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:19:02,345 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 20:19:02,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48951965] [2020-11-29 20:19:02,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:19:02,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:19:02,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994551771] [2020-11-29 20:19:02,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:19:02,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:19:02,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:19:02,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:19:02,350 INFO L87 Difference]: Start difference. First operand 407 states and 622 transitions. Second operand 4 states. [2020-11-29 20:19:03,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:19:03,160 INFO L93 Difference]: Finished difference Result 927 states and 1406 transitions. [2020-11-29 20:19:03,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:19:03,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-11-29 20:19:03,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:19:03,168 INFO L225 Difference]: With dead ends: 927 [2020-11-29 20:19:03,168 INFO L226 Difference]: Without dead ends: 530 [2020-11-29 20:19:03,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:19:03,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-11-29 20:19:03,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 407. [2020-11-29 20:19:03,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 20:19:03,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 620 transitions. [2020-11-29 20:19:03,196 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 620 transitions. Word has length 85 [2020-11-29 20:19:03,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:19:03,197 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 620 transitions. [2020-11-29 20:19:03,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:19:03,198 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 620 transitions. [2020-11-29 20:19:03,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-29 20:19:03,201 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:19:03,201 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:19:03,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 20:19:03,202 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:19:03,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:19:03,202 INFO L82 PathProgramCache]: Analyzing trace with hash 793149036, now seen corresponding path program 1 times [2020-11-29 20:19:03,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:19:03,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455468041] [2020-11-29 20:19:03,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:19:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:19:03,347 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 20:19:03,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455468041] [2020-11-29 20:19:03,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:19:03,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:19:03,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300973113] [2020-11-29 20:19:03,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:19:03,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:19:03,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:19:03,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:19:03,352 INFO L87 Difference]: Start difference. First operand 407 states and 620 transitions. Second operand 4 states. [2020-11-29 20:19:04,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:19:04,149 INFO L93 Difference]: Finished difference Result 927 states and 1402 transitions. [2020-11-29 20:19:04,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:19:04,160 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-11-29 20:19:04,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:19:04,166 INFO L225 Difference]: With dead ends: 927 [2020-11-29 20:19:04,166 INFO L226 Difference]: Without dead ends: 530 [2020-11-29 20:19:04,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:19:04,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-11-29 20:19:04,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 407. [2020-11-29 20:19:04,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 20:19:04,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 618 transitions. [2020-11-29 20:19:04,212 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 618 transitions. Word has length 85 [2020-11-29 20:19:04,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:19:04,213 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 618 transitions. [2020-11-29 20:19:04,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:19:04,213 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 618 transitions. [2020-11-29 20:19:04,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-29 20:19:04,215 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:19:04,215 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-11-29 20:19:04,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 20:19:04,216 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:19:04,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:19:04,217 INFO L82 PathProgramCache]: Analyzing trace with hash 872770184, now seen corresponding path program 2 times [2020-11-29 20:19:04,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:19:04,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182869250] [2020-11-29 20:19:04,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:19:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:19:04,371 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 20:19:04,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182869250] [2020-11-29 20:19:04,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:19:04,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:19:04,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914871936] [2020-11-29 20:19:04,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:19:04,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:19:04,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:19:04,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:19:04,376 INFO L87 Difference]: Start difference. First operand 407 states and 618 transitions. Second operand 4 states. [2020-11-29 20:19:04,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:19:04,983 INFO L93 Difference]: Finished difference Result 847 states and 1277 transitions. [2020-11-29 20:19:04,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:19:04,984 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-11-29 20:19:04,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:19:04,988 INFO L225 Difference]: With dead ends: 847 [2020-11-29 20:19:04,988 INFO L226 Difference]: Without dead ends: 450 [2020-11-29 20:19:04,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:19:04,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-11-29 20:19:05,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 407. [2020-11-29 20:19:05,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 20:19:05,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 616 transitions. [2020-11-29 20:19:05,006 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 616 transitions. Word has length 85 [2020-11-29 20:19:05,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:19:05,007 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 616 transitions. [2020-11-29 20:19:05,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:19:05,007 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 616 transitions. [2020-11-29 20:19:05,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-29 20:19:05,009 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:19:05,010 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:19:05,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 20:19:05,013 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:19:05,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:19:05,015 INFO L82 PathProgramCache]: Analyzing trace with hash -236210262, now seen corresponding path program 1 times [2020-11-29 20:19:05,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:19:05,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069228813] [2020-11-29 20:19:05,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:19:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:19:05,131 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 20:19:05,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069228813] [2020-11-29 20:19:05,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:19:05,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:19:05,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36559034] [2020-11-29 20:19:05,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:19:05,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:19:05,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:19:05,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:19:05,139 INFO L87 Difference]: Start difference. First operand 407 states and 616 transitions. Second operand 4 states. [2020-11-29 20:19:05,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:19:05,715 INFO L93 Difference]: Finished difference Result 847 states and 1273 transitions. [2020-11-29 20:19:05,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:19:05,717 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-11-29 20:19:05,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:19:05,721 INFO L225 Difference]: With dead ends: 847 [2020-11-29 20:19:05,721 INFO L226 Difference]: Without dead ends: 450 [2020-11-29 20:19:05,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:19:05,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-11-29 20:19:05,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 407. [2020-11-29 20:19:05,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 20:19:05,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 614 transitions. [2020-11-29 20:19:05,741 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 614 transitions. Word has length 85 [2020-11-29 20:19:05,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:19:05,742 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 614 transitions. [2020-11-29 20:19:05,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:19:05,742 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 614 transitions. [2020-11-29 20:19:05,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-29 20:19:05,747 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:19:05,747 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:19:05,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 20:19:05,748 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:19:05,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:19:05,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1127790653, now seen corresponding path program 1 times [2020-11-29 20:19:05,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:19:05,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480471135] [2020-11-29 20:19:05,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:19:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:19:05,864 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 20:19:05,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480471135] [2020-11-29 20:19:05,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:19:05,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:19:05,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522036789] [2020-11-29 20:19:05,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:19:05,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:19:05,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:19:05,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:19:05,875 INFO L87 Difference]: Start difference. First operand 407 states and 614 transitions. Second operand 4 states. [2020-11-29 20:19:06,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:19:06,716 INFO L93 Difference]: Finished difference Result 927 states and 1390 transitions. [2020-11-29 20:19:06,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:19:06,717 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-11-29 20:19:06,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:19:06,722 INFO L225 Difference]: With dead ends: 927 [2020-11-29 20:19:06,722 INFO L226 Difference]: Without dead ends: 530 [2020-11-29 20:19:06,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:19:06,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-11-29 20:19:06,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 407. [2020-11-29 20:19:06,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 20:19:06,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 612 transitions. [2020-11-29 20:19:06,741 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 612 transitions. Word has length 86 [2020-11-29 20:19:06,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:19:06,742 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 612 transitions. [2020-11-29 20:19:06,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:19:06,742 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 612 transitions. [2020-11-29 20:19:06,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-29 20:19:06,744 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:19:06,744 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:19:06,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 20:19:06,745 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:19:06,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:19:06,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1321809477, now seen corresponding path program 1 times [2020-11-29 20:19:06,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:19:06,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137781353] [2020-11-29 20:19:06,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:19:06,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:19:06,879 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 20:19:06,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137781353] [2020-11-29 20:19:06,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:19:06,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:19:06,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418919451] [2020-11-29 20:19:06,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:19:06,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:19:06,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:19:06,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:19:06,882 INFO L87 Difference]: Start difference. First operand 407 states and 612 transitions. Second operand 4 states. [2020-11-29 20:19:07,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:19:07,470 INFO L93 Difference]: Finished difference Result 847 states and 1265 transitions. [2020-11-29 20:19:07,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:19:07,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-11-29 20:19:07,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:19:07,474 INFO L225 Difference]: With dead ends: 847 [2020-11-29 20:19:07,475 INFO L226 Difference]: Without dead ends: 450 [2020-11-29 20:19:07,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:19:07,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-11-29 20:19:07,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 407. [2020-11-29 20:19:07,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 20:19:07,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 610 transitions. [2020-11-29 20:19:07,493 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 610 transitions. Word has length 86 [2020-11-29 20:19:07,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:19:07,493 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 610 transitions. [2020-11-29 20:19:07,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:19:07,494 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 610 transitions. [2020-11-29 20:19:07,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-11-29 20:19:07,496 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:19:07,496 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:19:07,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 20:19:07,496 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:19:07,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:19:07,497 INFO L82 PathProgramCache]: Analyzing trace with hash -490798233, now seen corresponding path program 1 times [2020-11-29 20:19:07,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:19:07,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816737858] [2020-11-29 20:19:07,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:19:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:19:07,607 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 20:19:07,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816737858] [2020-11-29 20:19:07,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:19:07,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:19:07,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772849618] [2020-11-29 20:19:07,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:19:07,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:19:07,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:19:07,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:19:07,613 INFO L87 Difference]: Start difference. First operand 407 states and 610 transitions. Second operand 4 states. [2020-11-29 20:19:08,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:19:08,475 INFO L93 Difference]: Finished difference Result 927 states and 1382 transitions. [2020-11-29 20:19:08,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:19:08,476 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-11-29 20:19:08,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:19:08,481 INFO L225 Difference]: With dead ends: 927 [2020-11-29 20:19:08,481 INFO L226 Difference]: Without dead ends: 530 [2020-11-29 20:19:08,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:19:08,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-11-29 20:19:08,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 407. [2020-11-29 20:19:08,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 20:19:08,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 608 transitions. [2020-11-29 20:19:08,502 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 608 transitions. Word has length 87 [2020-11-29 20:19:08,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:19:08,502 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 608 transitions. [2020-11-29 20:19:08,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:19:08,502 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 608 transitions. [2020-11-29 20:19:08,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-11-29 20:19:08,504 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:19:08,505 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-11-29 20:19:08,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-29 20:19:08,505 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:19:08,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:19:08,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1383461914, now seen corresponding path program 1 times [2020-11-29 20:19:08,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:19:08,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302962056] [2020-11-29 20:19:08,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:19:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:19:08,615 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 20:19:08,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302962056] [2020-11-29 20:19:08,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:19:08,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:19:08,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284570843] [2020-11-29 20:19:08,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:19:08,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:19:08,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:19:08,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:19:08,618 INFO L87 Difference]: Start difference. First operand 407 states and 608 transitions. Second operand 4 states. [2020-11-29 20:19:09,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:19:09,513 INFO L93 Difference]: Finished difference Result 783 states and 1162 transitions. [2020-11-29 20:19:09,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:19:09,514 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-11-29 20:19:09,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:19:09,519 INFO L225 Difference]: With dead ends: 783 [2020-11-29 20:19:09,519 INFO L226 Difference]: Without dead ends: 530 [2020-11-29 20:19:09,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:19:09,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-11-29 20:19:09,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 407. [2020-11-29 20:19:09,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 20:19:09,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 606 transitions. [2020-11-29 20:19:09,538 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 606 transitions. Word has length 87 [2020-11-29 20:19:09,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:19:09,539 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 606 transitions. [2020-11-29 20:19:09,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:19:09,539 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 606 transitions. [2020-11-29 20:19:09,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-11-29 20:19:09,541 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:19:09,542 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:19:09,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-29 20:19:09,542 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:19:09,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:19:09,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1862605531, now seen corresponding path program 1 times [2020-11-29 20:19:09,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:19:09,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539675547] [2020-11-29 20:19:09,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:19:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:19:09,636 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 20:19:09,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539675547] [2020-11-29 20:19:09,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:19:09,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:19:09,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686563461] [2020-11-29 20:19:09,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:19:09,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:19:09,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:19:09,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:19:09,639 INFO L87 Difference]: Start difference. First operand 407 states and 606 transitions. Second operand 4 states. [2020-11-29 20:19:10,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:19:10,321 INFO L93 Difference]: Finished difference Result 847 states and 1253 transitions. [2020-11-29 20:19:10,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:19:10,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-11-29 20:19:10,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:19:10,327 INFO L225 Difference]: With dead ends: 847 [2020-11-29 20:19:10,327 INFO L226 Difference]: Without dead ends: 450 [2020-11-29 20:19:10,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:19:10,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-11-29 20:19:10,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 407. [2020-11-29 20:19:10,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 20:19:10,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 604 transitions. [2020-11-29 20:19:10,348 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 604 transitions. Word has length 87 [2020-11-29 20:19:10,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:19:10,349 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 604 transitions. [2020-11-29 20:19:10,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:19:10,349 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 604 transitions. [2020-11-29 20:19:10,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-11-29 20:19:10,351 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:19:10,351 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-11-29 20:19:10,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-29 20:19:10,353 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:19:10,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:19:10,354 INFO L82 PathProgramCache]: Analyzing trace with hash 11654616, now seen corresponding path program 1 times [2020-11-29 20:19:10,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:19:10,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612499931] [2020-11-29 20:19:10,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:19:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:19:10,456 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 20:19:10,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612499931] [2020-11-29 20:19:10,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:19:10,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:19:10,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254405722] [2020-11-29 20:19:10,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:19:10,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:19:10,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:19:10,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:19:10,462 INFO L87 Difference]: Start difference. First operand 407 states and 604 transitions. Second operand 4 states. [2020-11-29 20:19:11,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:19:11,071 INFO L93 Difference]: Finished difference Result 703 states and 1035 transitions. [2020-11-29 20:19:11,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:19:11,072 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-11-29 20:19:11,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:19:11,076 INFO L225 Difference]: With dead ends: 703 [2020-11-29 20:19:11,076 INFO L226 Difference]: Without dead ends: 450 [2020-11-29 20:19:11,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:19:11,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-11-29 20:19:11,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 407. [2020-11-29 20:19:11,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 20:19:11,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 602 transitions. [2020-11-29 20:19:11,096 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 602 transitions. Word has length 87 [2020-11-29 20:19:11,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:19:11,096 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 602 transitions. [2020-11-29 20:19:11,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:19:11,097 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 602 transitions. [2020-11-29 20:19:11,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-29 20:19:11,099 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:19:11,099 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:19:11,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-29 20:19:11,100 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:19:11,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:19:11,100 INFO L82 PathProgramCache]: Analyzing trace with hash 2132678238, now seen corresponding path program 1 times [2020-11-29 20:19:11,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:19:11,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054810586] [2020-11-29 20:19:11,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:19:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:19:11,229 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 20:19:11,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054810586] [2020-11-29 20:19:11,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:19:11,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:19:11,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947011879] [2020-11-29 20:19:11,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:19:11,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:19:11,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:19:11,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:19:11,233 INFO L87 Difference]: Start difference. First operand 407 states and 602 transitions. Second operand 4 states. [2020-11-29 20:19:12,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:19:12,059 INFO L93 Difference]: Finished difference Result 909 states and 1344 transitions. [2020-11-29 20:19:12,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:19:12,062 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-11-29 20:19:12,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:19:12,066 INFO L225 Difference]: With dead ends: 909 [2020-11-29 20:19:12,066 INFO L226 Difference]: Without dead ends: 512 [2020-11-29 20:19:12,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:19:12,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2020-11-29 20:19:12,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 407. [2020-11-29 20:19:12,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 20:19:12,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 600 transitions. [2020-11-29 20:19:12,089 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 600 transitions. Word has length 88 [2020-11-29 20:19:12,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:19:12,089 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 600 transitions. [2020-11-29 20:19:12,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:19:12,090 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 600 transitions. [2020-11-29 20:19:12,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-29 20:19:12,091 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:19:12,092 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:19:12,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-29 20:19:12,092 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:19:12,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:19:12,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1903796849, now seen corresponding path program 1 times [2020-11-29 20:19:12,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:19:12,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331273122] [2020-11-29 20:19:12,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:19:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:19:12,209 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 20:19:12,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331273122] [2020-11-29 20:19:12,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:19:12,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:19:12,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380220328] [2020-11-29 20:19:12,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:19:12,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:19:12,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:19:12,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:19:12,214 INFO L87 Difference]: Start difference. First operand 407 states and 600 transitions. Second operand 4 states. [2020-11-29 20:19:13,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:19:13,046 INFO L93 Difference]: Finished difference Result 758 states and 1119 transitions. [2020-11-29 20:19:13,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:19:13,047 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-11-29 20:19:13,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:19:13,051 INFO L225 Difference]: With dead ends: 758 [2020-11-29 20:19:13,051 INFO L226 Difference]: Without dead ends: 505 [2020-11-29 20:19:13,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:19:13,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2020-11-29 20:19:13,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 407. [2020-11-29 20:19:13,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 20:19:13,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 598 transitions. [2020-11-29 20:19:13,071 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 598 transitions. Word has length 88 [2020-11-29 20:19:13,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:19:13,071 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 598 transitions. [2020-11-29 20:19:13,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:19:13,072 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 598 transitions. [2020-11-29 20:19:13,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-29 20:19:13,074 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:19:13,074 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:19:13,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-29 20:19:13,074 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:19:13,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:19:13,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1738642336, now seen corresponding path program 1 times [2020-11-29 20:19:13,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:19:13,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778814784] [2020-11-29 20:19:13,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:19:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:19:13,181 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 20:19:13,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778814784] [2020-11-29 20:19:13,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:19:13,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:19:13,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918720606] [2020-11-29 20:19:13,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:19:13,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:19:13,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:19:13,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:19:13,186 INFO L87 Difference]: Start difference. First operand 407 states and 598 transitions. Second operand 4 states. [2020-11-29 20:19:13,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:19:13,794 INFO L93 Difference]: Finished difference Result 829 states and 1215 transitions. [2020-11-29 20:19:13,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:19:13,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-11-29 20:19:13,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:19:13,798 INFO L225 Difference]: With dead ends: 829 [2020-11-29 20:19:13,798 INFO L226 Difference]: Without dead ends: 432 [2020-11-29 20:19:13,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:19:13,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-11-29 20:19:13,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 407. [2020-11-29 20:19:13,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 20:19:13,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 596 transitions. [2020-11-29 20:19:13,821 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 596 transitions. Word has length 88 [2020-11-29 20:19:13,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:19:13,822 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 596 transitions. [2020-11-29 20:19:13,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:19:13,822 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 596 transitions. [2020-11-29 20:19:13,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-29 20:19:13,824 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:19:13,825 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:19:13,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-29 20:19:13,825 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:19:13,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:19:13,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1967523725, now seen corresponding path program 1 times [2020-11-29 20:19:13,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:19:13,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135693819] [2020-11-29 20:19:13,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:19:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:19:13,963 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 20:19:13,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135693819] [2020-11-29 20:19:13,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:19:13,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:19:13,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773065926] [2020-11-29 20:19:13,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:19:13,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:19:13,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:19:13,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:19:13,967 INFO L87 Difference]: Start difference. First operand 407 states and 596 transitions. Second operand 4 states. [2020-11-29 20:19:14,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:19:14,578 INFO L93 Difference]: Finished difference Result 678 states and 992 transitions. [2020-11-29 20:19:14,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:19:14,579 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-11-29 20:19:14,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:19:14,583 INFO L225 Difference]: With dead ends: 678 [2020-11-29 20:19:14,583 INFO L226 Difference]: Without dead ends: 425 [2020-11-29 20:19:14,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:19:14,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-11-29 20:19:14,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 407. [2020-11-29 20:19:14,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 20:19:14,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 594 transitions. [2020-11-29 20:19:14,603 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 594 transitions. Word has length 88 [2020-11-29 20:19:14,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:19:14,604 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 594 transitions. [2020-11-29 20:19:14,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:19:14,604 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 594 transitions. [2020-11-29 20:19:14,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-29 20:19:14,607 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:19:14,607 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:19:14,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-29 20:19:14,607 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:19:14,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:19:14,608 INFO L82 PathProgramCache]: Analyzing trace with hash 730673667, now seen corresponding path program 1 times [2020-11-29 20:19:14,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:19:14,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213342965] [2020-11-29 20:19:14,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:19:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:19:14,718 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 20:19:14,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213342965] [2020-11-29 20:19:14,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:19:14,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:19:14,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500021751] [2020-11-29 20:19:14,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:19:14,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:19:14,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:19:14,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:19:14,729 INFO L87 Difference]: Start difference. First operand 407 states and 594 transitions. Second operand 4 states. [2020-11-29 20:19:15,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:19:15,386 INFO L93 Difference]: Finished difference Result 902 states and 1319 transitions. [2020-11-29 20:19:15,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:19:15,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-11-29 20:19:15,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:19:15,391 INFO L225 Difference]: With dead ends: 902 [2020-11-29 20:19:15,392 INFO L226 Difference]: Without dead ends: 505 [2020-11-29 20:19:15,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:19:15,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2020-11-29 20:19:15,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 407. [2020-11-29 20:19:15,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-11-29 20:19:15,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 592 transitions. [2020-11-29 20:19:15,409 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 592 transitions. Word has length 89 [2020-11-29 20:19:15,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:19:15,410 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 592 transitions. [2020-11-29 20:19:15,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:19:15,410 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 592 transitions. [2020-11-29 20:19:15,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-29 20:19:15,412 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:19:15,412 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:19:15,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-29 20:19:15,412 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:19:15,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:19:15,413 INFO L82 PathProgramCache]: Analyzing trace with hash 978820161, now seen corresponding path program 1 times [2020-11-29 20:19:15,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:19:15,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039822629] [2020-11-29 20:19:15,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:19:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:19:15,509 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-11-29 20:19:15,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039822629] [2020-11-29 20:19:15,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:19:15,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:19:15,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32124712] [2020-11-29 20:19:15,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:19:15,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:19:15,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:19:15,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:19:15,512 INFO L87 Difference]: Start difference. First operand 407 states and 592 transitions. Second operand 3 states. [2020-11-29 20:19:15,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:19:15,670 INFO L93 Difference]: Finished difference Result 806 states and 1179 transitions. [2020-11-29 20:19:15,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:19:15,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-11-29 20:19:15,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:19:15,675 INFO L225 Difference]: With dead ends: 806 [2020-11-29 20:19:15,675 INFO L226 Difference]: Without dead ends: 555 [2020-11-29 20:19:15,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:19:15,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-11-29 20:19:15,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2020-11-29 20:19:15,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2020-11-29 20:19:15,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 805 transitions. [2020-11-29 20:19:15,697 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 805 transitions. Word has length 89 [2020-11-29 20:19:15,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:19:15,698 INFO L481 AbstractCegarLoop]: Abstraction has 555 states and 805 transitions. [2020-11-29 20:19:15,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:19:15,698 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 805 transitions. [2020-11-29 20:19:15,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-29 20:19:15,700 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:19:15,700 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:19:15,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-29 20:19:15,701 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:19:15,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:19:15,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1317014729, now seen corresponding path program 1 times [2020-11-29 20:19:15,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:19:15,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713980410] [2020-11-29 20:19:15,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:19:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:19:15,795 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-11-29 20:19:15,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713980410] [2020-11-29 20:19:15,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:19:15,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:19:15,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356806230] [2020-11-29 20:19:15,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:19:15,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:19:15,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:19:15,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:19:15,800 INFO L87 Difference]: Start difference. First operand 555 states and 805 transitions. Second operand 3 states. [2020-11-29 20:19:15,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:19:15,864 INFO L93 Difference]: Finished difference Result 1103 states and 1606 transitions. [2020-11-29 20:19:15,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:19:15,865 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-11-29 20:19:15,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:19:15,870 INFO L225 Difference]: With dead ends: 1103 [2020-11-29 20:19:15,870 INFO L226 Difference]: Without dead ends: 704 [2020-11-29 20:19:15,871 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 [2020-11-29 20:19:15,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-11-29 20:19:15,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 704. [2020-11-29 20:19:15,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2020-11-29 20:19:15,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1023 transitions. [2020-11-29 20:19:15,896 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1023 transitions. Word has length 91 [2020-11-29 20:19:15,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:19:15,897 INFO L481 AbstractCegarLoop]: Abstraction has 704 states and 1023 transitions. [2020-11-29 20:19:15,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:19:15,897 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1023 transitions. [2020-11-29 20:19:15,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-11-29 20:19:15,900 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:19:15,900 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 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, 1, 1] [2020-11-29 20:19:15,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-29 20:19:15,901 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:19:15,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:19:15,902 INFO L82 PathProgramCache]: Analyzing trace with hash -761801560, now seen corresponding path program 1 times [2020-11-29 20:19:15,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:19:15,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540975836] [2020-11-29 20:19:15,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:19:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:19:16,134 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:19:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:19:16,343 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:19:16,480 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:19:16,480 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:19:16,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-29 20:19:16,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:19:16 BoogieIcfgContainer [2020-11-29 20:19:16,705 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:19:16,715 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:19:16,715 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:19:16,715 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:19:16,716 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:18:56" (3/4) ... [2020-11-29 20:19:16,720 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 20:19:16,721 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:19:16,723 INFO L168 Benchmark]: Toolchain (without parser) took 23727.68 ms. Allocated memory was 98.6 MB in the beginning and 230.7 MB in the end (delta: 132.1 MB). Free memory was 77.8 MB in the beginning and 202.0 MB in the end (delta: -124.2 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:19:16,723 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 81.8 MB. Free memory is still 58.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:19:16,724 INFO L168 Benchmark]: CACSL2BoogieTranslator took 929.20 ms. Allocated memory is still 98.6 MB. Free memory was 77.6 MB in the beginning and 48.3 MB in the end (delta: 29.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-29 20:19:16,724 INFO L168 Benchmark]: Boogie Procedure Inliner took 134.05 ms. Allocated memory is still 98.6 MB. Free memory was 48.3 MB in the beginning and 43.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:19:16,725 INFO L168 Benchmark]: Boogie Preprocessor took 192.66 ms. Allocated memory is still 98.6 MB. Free memory was 43.8 MB in the beginning and 72.9 MB in the end (delta: -29.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. [2020-11-29 20:19:16,725 INFO L168 Benchmark]: RCFGBuilder took 2002.01 ms. Allocated memory is still 98.6 MB. Free memory was 72.4 MB in the beginning and 64.8 MB in the end (delta: 7.6 MB). Peak memory consumption was 43.0 MB. Max. memory is 16.1 GB. [2020-11-29 20:19:16,726 INFO L168 Benchmark]: TraceAbstraction took 20430.11 ms. Allocated memory was 98.6 MB in the beginning and 230.7 MB in the end (delta: 132.1 MB). Free memory was 64.2 MB in the beginning and 202.0 MB in the end (delta: -137.8 MB). Peak memory consumption was 130.9 MB. Max. memory is 16.1 GB. [2020-11-29 20:19:16,726 INFO L168 Benchmark]: Witness Printer took 6.10 ms. Allocated memory is still 230.7 MB. Free memory is still 202.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:19:16,729 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 81.8 MB. Free memory is still 58.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 929.20 ms. Allocated memory is still 98.6 MB. Free memory was 77.6 MB in the beginning and 48.3 MB in the end (delta: 29.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 134.05 ms. Allocated memory is still 98.6 MB. Free memory was 48.3 MB in the beginning and 43.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 192.66 ms. Allocated memory is still 98.6 MB. Free memory was 43.8 MB in the beginning and 72.9 MB in the end (delta: -29.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2002.01 ms. Allocated memory is still 98.6 MB. Free memory was 72.4 MB in the beginning and 64.8 MB in the end (delta: 7.6 MB). Peak memory consumption was 43.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 20430.11 ms. Allocated memory was 98.6 MB in the beginning and 230.7 MB in the end (delta: 132.1 MB). Free memory was 64.2 MB in the beginning and 202.0 MB in the end (delta: -137.8 MB). Peak memory consumption was 130.9 MB. Max. memory is 16.1 GB. * Witness Printer took 6.10 ms. Allocated memory is still 230.7 MB. Free memory is still 202.0 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 bitwiseAnd at line 1338. Possible FailurePath: [L1044] static int init = 1; [L1045] static SSL_METHOD SSLv3_client_data ; VAL [init=1, SSLv3_client_data={5:0}] [L1067] SSL *s = (SSL*)malloc(sizeof(SSL)) ; [L1071] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1072] s->ctx = malloc(sizeof(SSL_CTX)) [L1073] s->session = malloc(sizeof(SSL_SESSION)) [L1074] s->state = 12292 [L1075] s->version = __VERIFIER_nondet_int() [L1082] BUF_MEM *buf ; [L1083] unsigned long tmp ; [L1084] unsigned long l ; [L1085] long num1 ; [L1086] void (*cb)() ; [L1087] int ret ; [L1088] int new_state ; [L1089] int state ; [L1090] int skip ; [L1091] int tmp___1 = __VERIFIER_nondet_int() ; [L1092] int tmp___2 = __VERIFIER_nondet_int() ; [L1093] int tmp___3 = __VERIFIER_nondet_int() ; [L1094] int tmp___4 = __VERIFIER_nondet_int() ; [L1095] int tmp___5 = __VERIFIER_nondet_int() ; [L1096] int tmp___6 = __VERIFIER_nondet_int() ; [L1097] int tmp___7 = __VERIFIER_nondet_int() ; [L1098] int tmp___8 = __VERIFIER_nondet_int() ; [L1099] long tmp___9 = __VERIFIER_nondet_long() ; [L1100] int blastFlag ; [L1103] blastFlag = 0 [L1104] s->hit=__VERIFIER_nondet_int () [L1105] s->state = 12292 [L1106] tmp = __VERIFIER_nondet_int() [L1107] cb = (void (*)())((void *)0) [L1108] ret = -1 [L1109] skip = 0 [L1110] EXPR s->info_callback VAL [init=1, SSLv3_client_data={5:0}] [L1110] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1111] EXPR s->info_callback [L1111] cb = s->info_callback [L1119] EXPR s->in_handshake [L1119] s->in_handshake += 1 [L1120] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_client_data={5:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={5:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1133] COND TRUE s->state == 12292 [L1236] s->new_session = 1 [L1237] s->state = 4096 [L1238] EXPR s->ctx [L1238] EXPR (s->ctx)->stats.sess_connect_renegotiate [L1238] (s->ctx)->stats.sess_connect_renegotiate += 1 [L1243] s->server = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1244] COND TRUE (unsigned long )cb != (unsigned long )((void *)0) VAL [init=1, SSLv3_client_data={5:0}] [L1249] EXPR s->version VAL [init=1, SSLv3_client_data={5:0}] [L1249] COND FALSE !((s->version & 65280) != 768) [L1255] s->type = 4096 [L1256] EXPR s->init_buf VAL [init=1, SSLv3_client_data={5:0}] [L1256] COND FALSE !((unsigned long )s->init_buf == (unsigned long )((void *)0)) [L1274] COND FALSE !(! tmp___4) VAL [init=1, SSLv3_client_data={5:0}] [L1280] COND FALSE !(! tmp___5) [L1286] s->state = 4368 [L1287] EXPR s->ctx [L1287] EXPR (s->ctx)->stats.sess_connect [L1287] (s->ctx)->stats.sess_connect += 1 [L1288] s->init_num = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={5:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={5:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1148] COND TRUE s->state == 4368 [L1292] s->shutdown = 0 [L1293] ret = __VERIFIER_nondet_int() [L1294] COND TRUE blastFlag == 0 [L1295] blastFlag = 1 VAL [init=1, SSLv3_client_data={5:0}] [L1303] COND FALSE !(ret <= 0) [L1308] s->state = 4384 [L1309] s->init_num = 0 [L1310] EXPR s->bbio [L1310] EXPR s->wbio VAL [init=1, SSLv3_client_data={5:0}] [L1310] COND TRUE (unsigned long )s->bbio != (unsigned long )s->wbio [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={5:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={5:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1148] COND FALSE !(s->state == 4368) [L1151] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1151] COND FALSE !(s->state == 4369) [L1154] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1154] COND TRUE s->state == 4384 [L1318] ret = __VERIFIER_nondet_int() [L1319] COND TRUE blastFlag == 1 [L1320] blastFlag = 2 VAL [init=1, SSLv3_client_data={5:0}] [L1324] COND FALSE !(ret <= 0) [L1329] s->hit VAL [init=1, SSLv3_client_data={5:0}] [L1329] COND FALSE !(s->hit) [L1332] s->state = 4400 VAL [init=1, SSLv3_client_data={5:0}] [L1334] s->init_num = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={5:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={5:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1148] COND FALSE !(s->state == 4368) [L1151] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1151] COND FALSE !(s->state == 4369) [L1154] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1154] COND FALSE !(s->state == 4384) [L1157] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1157] COND FALSE !(s->state == 4385) [L1160] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1160] COND TRUE s->state == 4400 [L1338] EXPR s->s3 [L1338] EXPR (s->s3)->tmp.new_cipher [L1338] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [init=1, SSLv3_client_data={5:0}] [L1338] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1341] ret = __VERIFIER_nondet_int() [L1342] COND TRUE blastFlag == 2 [L1343] blastFlag = 3 VAL [init=1, SSLv3_client_data={5:0}] [L1347] COND FALSE !(ret <= 0) VAL [init=1, SSLv3_client_data={5:0}] [L1353] s->state = 4416 [L1354] s->init_num = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={5:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={5:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1148] COND FALSE !(s->state == 4368) [L1151] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1151] COND FALSE !(s->state == 4369) [L1154] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1154] COND FALSE !(s->state == 4384) [L1157] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1157] COND FALSE !(s->state == 4385) [L1160] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1160] COND FALSE !(s->state == 4400) [L1163] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1163] COND FALSE !(s->state == 4401) [L1166] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1166] COND TRUE s->state == 4416 [L1358] ret = __VERIFIER_nondet_int() [L1359] COND TRUE blastFlag == 3 [L1360] blastFlag = 4 VAL [init=1, SSLv3_client_data={5:0}] [L1364] COND FALSE !(ret <= 0) [L1369] s->state = 4432 [L1370] s->init_num = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1371] COND FALSE !(! tmp___6) VAL [init=1, SSLv3_client_data={5:0}] [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={5:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={5:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={5:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1148] COND FALSE !(s->state == 4368) [L1151] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1151] COND FALSE !(s->state == 4369) [L1154] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1154] COND FALSE !(s->state == 4384) [L1157] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1157] COND FALSE !(s->state == 4385) [L1160] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1160] COND FALSE !(s->state == 4400) [L1163] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1163] COND FALSE !(s->state == 4401) [L1166] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1166] COND FALSE !(s->state == 4416) [L1169] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1169] COND FALSE !(s->state == 4417) [L1172] EXPR s->state VAL [init=1, SSLv3_client_data={5:0}] [L1172] COND TRUE s->state == 4432 [L1380] ret = __VERIFIER_nondet_int() [L1381] COND TRUE blastFlag == 4 VAL [init=1, SSLv3_client_data={5:0}] [L3] __assert_fail("0", "s3_clnt.blast.02.i.cil-1.c", 3, "reach_error") VAL [init=1, SSLv3_client_data={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 130 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 20.1s, OverallIterations: 24, TraceHistogramMax: 6, AutomataDifference: 15.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5042 SDtfs, 1763 SDslu, 6301 SDs, 0 SdLazy, 3592 SolverSat, 131 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 46 SyntacticMatches, 19 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=704occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 23 MinimizatonAttempts, 1480 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 1922 NumberOfCodeBlocks, 1922 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1787 ConstructedInterpolants, 0 QuantifiedInterpolants, 374650 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 23 PerfectInterpolantSequences, 1532/1532 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 [2020-11-29 20:19:19,938 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-11-29 20:19:20,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:19:20,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:19:20,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:19:20,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:19:20,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:19:20,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:19:20,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:19:20,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:19:20,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:19:20,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:19:20,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:19:20,103 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 20:19:20,139 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:19:20,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:19:20,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:19:20,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:19:20,142 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:19:20,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:19:20,143 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:19:20,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:19:20,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:19:20,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:19:20,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:19:20,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:19:20,145 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 20:19:20,145 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 20:19:20,145 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:19:20,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:19:20,146 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:19:20,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:19:20,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:19:20,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:19:20,147 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:19:20,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:19:20,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:19:20,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:19:20,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:19:20,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:19:20,170 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 20:19:20,171 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 20:19:20,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:19:20,171 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:19:20,171 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 20:19:20,172 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_273a1685-cd89-4096-9fbe-dd2ac90b10af/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bbd47246d88fcb39767f657e10b2743b89754c4e [2020-11-29 20:19:20,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:19:20,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:19:20,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:19:20,722 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:19:20,723 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:19:20,724 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/bin/uautomizer/../../sv-benchmarks/c/openssl/s3_clnt.blast.02.i.cil-1.c [2020-11-29 20:19:20,813 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/bin/uautomizer/data/8a85700e7/ebcb3b31fe4447a89af21cddf4d269c1/FLAG51a3fb4dd [2020-11-29 20:19:21,686 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:19:21,687 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/sv-benchmarks/c/openssl/s3_clnt.blast.02.i.cil-1.c [2020-11-29 20:19:21,723 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/bin/uautomizer/data/8a85700e7/ebcb3b31fe4447a89af21cddf4d269c1/FLAG51a3fb4dd [2020-11-29 20:19:21,810 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/bin/uautomizer/data/8a85700e7/ebcb3b31fe4447a89af21cddf4d269c1 [2020-11-29 20:19:21,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:19:21,818 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:19:21,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:19:21,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:19:21,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:19:21,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:19:21" (1/1) ... [2020-11-29 20:19:21,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13449ce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:19:21, skipping insertion in model container [2020-11-29 20:19:21,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:19:21" (1/1) ... [2020-11-29 20:19:21,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:19:21,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:19:22,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:19:22,729 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:19:22,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:19:22,885 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:19:22,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:19:22 WrapperNode [2020-11-29 20:19:22,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:19:22,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:19:22,888 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:19:22,888 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:19:22,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:19:22" (1/1) ... [2020-11-29 20:19:22,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:19:22" (1/1) ... [2020-11-29 20:19:23,055 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:19:23,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:19:23,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:19:23,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:19:23,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:19:22" (1/1) ... [2020-11-29 20:19:23,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:19:22" (1/1) ... [2020-11-29 20:19:23,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:19:22" (1/1) ... [2020-11-29 20:19:23,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:19:22" (1/1) ... [2020-11-29 20:19:23,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:19:22" (1/1) ... [2020-11-29 20:19:23,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:19:22" (1/1) ... [2020-11-29 20:19:23,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:19:22" (1/1) ... [2020-11-29 20:19:23,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:19:23,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:19:23,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:19:23,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:19:23,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:19:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/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 [2020-11-29 20:19:23,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 20:19:23,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 20:19:23,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:19:23,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 20:19:23,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 20:19:23,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 20:19:23,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:19:23,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:19:23,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 20:19:23,699 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-29 20:19:27,046 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-11-29 20:19:27,046 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-11-29 20:19:27,069 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:19:27,069 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 20:19:27,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:19:27 BoogieIcfgContainer [2020-11-29 20:19:27,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:19:27,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:19:27,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:19:27,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:19:27,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:19:21" (1/3) ... [2020-11-29 20:19:27,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d52b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:19:27, skipping insertion in model container [2020-11-29 20:19:27,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:19:22" (2/3) ... [2020-11-29 20:19:27,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d52b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:19:27, skipping insertion in model container [2020-11-29 20:19:27,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:19:27" (3/3) ... [2020-11-29 20:19:27,087 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.02.i.cil-1.c [2020-11-29 20:19:27,102 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:19:27,108 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:19:27,130 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 20:19:27,180 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:19:27,182 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:19:27,182 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:19:27,182 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:19:27,183 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:19:27,183 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:19:27,183 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:19:27,183 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:19:27,204 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states. [2020-11-29 20:19:27,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 20:19:27,212 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:19:27,213 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] [2020-11-29 20:19:27,214 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:19:27,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:19:27,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1457695037, now seen corresponding path program 1 times [2020-11-29 20:19:27,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:19:27,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047358963] [2020-11-29 20:19:27,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/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 [2020-11-29 20:19:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:19:27,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:19:27,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:19:27,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:19:27,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:19:27,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:19:27,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047358963] [2020-11-29 20:19:27,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:19:27,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-29 20:19:27,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178955571] [2020-11-29 20:19:27,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:19:27,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:19:27,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:19:27,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:19:27,618 INFO L87 Difference]: Start difference. First operand 130 states. Second operand 4 states. [2020-11-29 20:19:27,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:19:27,873 INFO L93 Difference]: Finished difference Result 486 states and 820 transitions. [2020-11-29 20:19:27,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:19:27,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-29 20:19:27,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:19:27,912 INFO L225 Difference]: With dead ends: 486 [2020-11-29 20:19:27,912 INFO L226 Difference]: Without dead ends: 312 [2020-11-29 20:19:27,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:19:27,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-11-29 20:19:28,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2020-11-29 20:19:28,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-11-29 20:19:28,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 467 transitions. [2020-11-29 20:19:28,034 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 467 transitions. Word has length 24 [2020-11-29 20:19:28,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:19:28,036 INFO L481 AbstractCegarLoop]: Abstraction has 312 states and 467 transitions. [2020-11-29 20:19:28,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:19:28,036 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 467 transitions. [2020-11-29 20:19:28,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-29 20:19:28,043 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:19:28,045 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:19:28,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 20:19:28,249 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:19:28,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:19:28,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1698457876, now seen corresponding path program 1 times [2020-11-29 20:19:28,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:19:28,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743159847] [2020-11-29 20:19:28,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/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 [2020-11-29 20:19:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:19:28,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:19:28,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:19:28,627 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:19:28,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:19:28,658 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:19:28,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743159847] [2020-11-29 20:19:28,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:19:28,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-29 20:19:28,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084305783] [2020-11-29 20:19:28,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:19:28,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:19:28,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:19:28,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:19:28,667 INFO L87 Difference]: Start difference. First operand 312 states and 467 transitions. Second operand 4 states. [2020-11-29 20:19:30,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:19:30,935 INFO L93 Difference]: Finished difference Result 718 states and 1080 transitions. [2020-11-29 20:19:30,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:19:30,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-11-29 20:19:30,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:19:30,950 INFO L225 Difference]: With dead ends: 718 [2020-11-29 20:19:30,950 INFO L226 Difference]: Without dead ends: 513 [2020-11-29 20:19:30,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:19:30,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2020-11-29 20:19:31,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 513. [2020-11-29 20:19:31,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-11-29 20:19:31,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 765 transitions. [2020-11-29 20:19:31,047 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 765 transitions. Word has length 60 [2020-11-29 20:19:31,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:19:31,048 INFO L481 AbstractCegarLoop]: Abstraction has 513 states and 765 transitions. [2020-11-29 20:19:31,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:19:31,048 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 765 transitions. [2020-11-29 20:19:31,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-29 20:19:31,058 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:19:31,058 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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] [2020-11-29 20:19:31,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 20:19:31,272 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:19:31,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:19:31,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1093818034, now seen corresponding path program 1 times [2020-11-29 20:19:31,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:19:31,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854219867] [2020-11-29 20:19:31,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/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 [2020-11-29 20:19:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:19:31,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:19:31,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:20:08,640 WARN L193 SmtUtils]: Spent 36.84 s on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2020-11-29 20:20:08,642 INFO L350 Elim1Store]: treesize reduction 122, result has 48.5 percent of original size [2020-11-29 20:20:08,643 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 124 [2020-11-29 20:20:08,644 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:20:41,220 WARN L193 SmtUtils]: Spent 32.57 s on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-11-29 20:20:41,221 INFO L625 ElimStorePlain]: treesize reduction 18, result has 85.5 percent of original size [2020-11-29 20:20:41,237 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-11-29 20:20:41,243 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:20:41,246 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-29 20:20:41,261 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:20:41,266 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:20:41,273 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-11-29 20:20:41,301 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:20:41,303 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-29 20:20:41,308 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-29 20:20:41,316 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-11-29 20:20:41,318 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:20:41,320 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-29 20:20:41,325 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:20:41,329 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:20:41,334 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-11-29 20:20:41,343 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:20:41,345 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-29 20:20:41,348 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-29 20:20:41,354 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-29 20:20:41,355 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:44, output treesize:83 [2020-11-29 20:20:41,356 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-11-29 20:20:41,358 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:20:41,360 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-29 20:20:41,364 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:20:41,367 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:20:41,375 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-11-29 20:20:41,381 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:20:41,385 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-29 20:20:41,392 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-29 20:20:41,512 INFO L350 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2020-11-29 20:20:41,513 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 24 [2020-11-29 20:20:41,516 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:20:41,522 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:20:41,522 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:20:41,522 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:9 [2020-11-29 20:20:41,538 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-11-29 20:20:41,539 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:20:41,542 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:20:41,543 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:20:41,543 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-11-29 20:20:41,588 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-11-29 20:20:41,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:20:41,631 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-11-29 20:20:41,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854219867] [2020-11-29 20:20:41,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:20:41,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-29 20:20:41,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518550772] [2020-11-29 20:20:41,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:20:41,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:20:41,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:20:41,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:20:41,645 INFO L87 Difference]: Start difference. First operand 513 states and 765 transitions. Second operand 4 states. [2020-11-29 20:20:43,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:20:43,233 INFO L93 Difference]: Finished difference Result 1023 states and 1524 transitions. [2020-11-29 20:20:43,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:20:43,236 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-11-29 20:20:43,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:20:43,240 INFO L225 Difference]: With dead ends: 1023 [2020-11-29 20:20:43,241 INFO L226 Difference]: Without dead ends: 517 [2020-11-29 20:20:43,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 190 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:20:43,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2020-11-29 20:20:43,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 516. [2020-11-29 20:20:43,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2020-11-29 20:20:43,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 768 transitions. [2020-11-29 20:20:43,280 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 768 transitions. Word has length 98 [2020-11-29 20:20:43,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:20:43,281 INFO L481 AbstractCegarLoop]: Abstraction has 516 states and 768 transitions. [2020-11-29 20:20:43,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:20:43,281 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 768 transitions. [2020-11-29 20:20:43,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-11-29 20:20:43,301 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:20:43,302 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 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, 1, 1] [2020-11-29 20:20:43,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 20:20:43,507 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:20:43,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:20:43,508 INFO L82 PathProgramCache]: Analyzing trace with hash 924378278, now seen corresponding path program 1 times [2020-11-29 20:20:43,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:20:43,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151685941] [2020-11-29 20:20:43,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/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 [2020-11-29 20:20:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:20:44,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:20:44,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:20:44,147 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-29 20:20:44,148 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:20:44,153 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:20:44,154 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:20:44,154 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-11-29 20:20:44,197 INFO L350 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-11-29 20:20:44,198 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2020-11-29 20:20:44,199 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:20:44,217 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:20:44,218 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:20:44,218 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-11-29 20:20:44,287 INFO L350 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-11-29 20:20:44,288 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2020-11-29 20:20:44,292 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:20:44,295 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:20:44,296 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:20:44,296 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-11-29 20:20:44,339 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-11-29 20:20:44,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:20:44,441 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-11-29 20:20:44,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151685941] [2020-11-29 20:20:44,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:20:44,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2020-11-29 20:20:44,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838587084] [2020-11-29 20:20:44,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 20:20:44,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:20:44,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:20:44,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:20:44,449 INFO L87 Difference]: Start difference. First operand 516 states and 768 transitions. Second operand 7 states. [2020-11-29 20:20:54,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:20:54,229 INFO L93 Difference]: Finished difference Result 1842 states and 2759 transitions. [2020-11-29 20:20:54,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:20:54,232 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2020-11-29 20:20:54,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:20:54,244 INFO L225 Difference]: With dead ends: 1842 [2020-11-29 20:20:54,244 INFO L226 Difference]: Without dead ends: 1336 [2020-11-29 20:20:54,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:20:54,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2020-11-29 20:20:54,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 620. [2020-11-29 20:20:54,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2020-11-29 20:20:54,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 942 transitions. [2020-11-29 20:20:54,292 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 942 transitions. Word has length 112 [2020-11-29 20:20:54,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:20:54,293 INFO L481 AbstractCegarLoop]: Abstraction has 620 states and 942 transitions. [2020-11-29 20:20:54,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 20:20:54,293 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 942 transitions. [2020-11-29 20:20:54,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-11-29 20:20:54,297 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:20:54,297 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 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, 1, 1] [2020-11-29 20:20:54,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 20:20:54,512 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:20:54,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:20:54,512 INFO L82 PathProgramCache]: Analyzing trace with hash -761801560, now seen corresponding path program 1 times [2020-11-29 20:20:54,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:20:54,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213178130] [2020-11-29 20:20:54,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/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 [2020-11-29 20:20:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:20:55,159 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:20:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:20:55,693 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:20:56,153 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 20:20:56,154 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:20:56,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-29 20:20:56,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:20:56 BoogieIcfgContainer [2020-11-29 20:20:56,589 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:20:56,590 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:20:56,590 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:20:56,590 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:20:56,591 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:19:27" (3/4) ... [2020-11-29 20:20:56,594 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 20:20:56,802 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_273a1685-cd89-4096-9fbe-dd2ac90b10af/bin/uautomizer/witness.graphml [2020-11-29 20:20:56,803 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:20:56,804 INFO L168 Benchmark]: Toolchain (without parser) took 94985.91 ms. Allocated memory was 69.2 MB in the beginning and 130.0 MB in the end (delta: 60.8 MB). Free memory was 49.3 MB in the beginning and 61.6 MB in the end (delta: -12.3 MB). Peak memory consumption was 47.7 MB. Max. memory is 16.1 GB. [2020-11-29 20:20:56,805 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 69.2 MB. Free memory is still 51.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:20:56,805 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1066.02 ms. Allocated memory is still 69.2 MB. Free memory was 49.2 MB in the beginning and 30.7 MB in the end (delta: 18.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 20:20:56,806 INFO L168 Benchmark]: Boogie Procedure Inliner took 167.74 ms. Allocated memory is still 69.2 MB. Free memory was 30.7 MB in the beginning and 47.0 MB in the end (delta: -16.3 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:20:56,806 INFO L168 Benchmark]: Boogie Preprocessor took 140.71 ms. Allocated memory is still 69.2 MB. Free memory was 47.0 MB in the beginning and 40.4 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 20:20:56,807 INFO L168 Benchmark]: RCFGBuilder took 3875.49 ms. Allocated memory was 69.2 MB in the beginning and 94.4 MB in the end (delta: 25.2 MB). Free memory was 40.4 MB in the beginning and 60.8 MB in the end (delta: -20.4 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. [2020-11-29 20:20:56,807 INFO L168 Benchmark]: TraceAbstraction took 89511.82 ms. Allocated memory was 94.4 MB in the beginning and 130.0 MB in the end (delta: 35.7 MB). Free memory was 60.2 MB in the beginning and 76.3 MB in the end (delta: -16.1 MB). Peak memory consumption was 66.8 MB. Max. memory is 16.1 GB. [2020-11-29 20:20:56,808 INFO L168 Benchmark]: Witness Printer took 213.12 ms. Allocated memory is still 130.0 MB. Free memory was 76.3 MB in the beginning and 61.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 20:20:56,811 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 69.2 MB. Free memory is still 51.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1066.02 ms. Allocated memory is still 69.2 MB. Free memory was 49.2 MB in the beginning and 30.7 MB in the end (delta: 18.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 167.74 ms. Allocated memory is still 69.2 MB. Free memory was 30.7 MB in the beginning and 47.0 MB in the end (delta: -16.3 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 140.71 ms. Allocated memory is still 69.2 MB. Free memory was 47.0 MB in the beginning and 40.4 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3875.49 ms. Allocated memory was 69.2 MB in the beginning and 94.4 MB in the end (delta: 25.2 MB). Free memory was 40.4 MB in the beginning and 60.8 MB in the end (delta: -20.4 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 89511.82 ms. Allocated memory was 94.4 MB in the beginning and 130.0 MB in the end (delta: 35.7 MB). Free memory was 60.2 MB in the beginning and 76.3 MB in the end (delta: -16.1 MB). Peak memory consumption was 66.8 MB. Max. memory is 16.1 GB. * Witness Printer took 213.12 ms. Allocated memory is still 130.0 MB. Free memory was 76.3 MB in the beginning and 61.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 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: [L1044] static int init = 1; [L1045] static SSL_METHOD SSLv3_client_data ; VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1067] SSL *s = (SSL*)malloc(sizeof(SSL)) ; [L1071] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1072] s->ctx = malloc(sizeof(SSL_CTX)) [L1073] s->session = malloc(sizeof(SSL_SESSION)) [L1074] s->state = 12292 [L1075] s->version = __VERIFIER_nondet_int() [L1082] BUF_MEM *buf ; [L1083] unsigned long tmp ; [L1084] unsigned long l ; [L1085] long num1 ; [L1086] void (*cb)() ; [L1087] int ret ; [L1088] int new_state ; [L1089] int state ; [L1090] int skip ; [L1091] int tmp___1 = __VERIFIER_nondet_int() ; [L1092] int tmp___2 = __VERIFIER_nondet_int() ; [L1093] int tmp___3 = __VERIFIER_nondet_int() ; [L1094] int tmp___4 = __VERIFIER_nondet_int() ; [L1095] int tmp___5 = __VERIFIER_nondet_int() ; [L1096] int tmp___6 = __VERIFIER_nondet_int() ; [L1097] int tmp___7 = __VERIFIER_nondet_int() ; [L1098] int tmp___8 = __VERIFIER_nondet_int() ; [L1099] long tmp___9 = __VERIFIER_nondet_long() ; [L1100] int blastFlag ; [L1103] blastFlag = 0 [L1104] s->hit=__VERIFIER_nondet_int () [L1105] s->state = 12292 [L1106] tmp = __VERIFIER_nondet_int() [L1107] cb = (void (*)())((void *)0) [L1108] ret = -1 [L1109] skip = 0 [L1110] EXPR s->info_callback VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1110] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1111] EXPR s->info_callback [L1111] cb = s->info_callback [L1119] EXPR s->in_handshake [L1119] s->in_handshake += 1 [L1120] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1133] COND TRUE s->state == 12292 [L1236] s->new_session = 1 [L1237] s->state = 4096 [L1238] EXPR s->ctx [L1238] EXPR (s->ctx)->stats.sess_connect_renegotiate [L1238] (s->ctx)->stats.sess_connect_renegotiate += 1 [L1243] s->server = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1244] COND TRUE (unsigned long )cb != (unsigned long )((void *)0) VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1249] EXPR s->version VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1249] COND FALSE !((s->version & 65280) != 768) [L1255] s->type = 4096 [L1256] EXPR s->init_buf VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1256] COND FALSE !((unsigned long )s->init_buf == (unsigned long )((void *)0)) [L1274] COND FALSE !(! tmp___4) VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1280] COND FALSE !(! tmp___5) [L1286] s->state = 4368 [L1287] EXPR s->ctx [L1287] EXPR (s->ctx)->stats.sess_connect [L1287] (s->ctx)->stats.sess_connect += 1 [L1288] s->init_num = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1148] COND TRUE s->state == 4368 [L1292] s->shutdown = 0 [L1293] ret = __VERIFIER_nondet_int() [L1294] COND TRUE blastFlag == 0 [L1295] blastFlag = 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1303] COND FALSE !(ret <= 0) [L1308] s->state = 4384 [L1309] s->init_num = 0 [L1310] EXPR s->bbio [L1310] EXPR s->wbio VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1310] COND TRUE (unsigned long )s->bbio != (unsigned long )s->wbio [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1148] COND FALSE !(s->state == 4368) [L1151] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1151] COND FALSE !(s->state == 4369) [L1154] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1154] COND TRUE s->state == 4384 [L1318] ret = __VERIFIER_nondet_int() [L1319] COND TRUE blastFlag == 1 [L1320] blastFlag = 2 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1324] COND FALSE !(ret <= 0) [L1329] s->hit VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1329] COND FALSE !(s->hit) [L1332] s->state = 4400 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1334] s->init_num = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1148] COND FALSE !(s->state == 4368) [L1151] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1151] COND FALSE !(s->state == 4369) [L1154] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1154] COND FALSE !(s->state == 4384) [L1157] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1157] COND FALSE !(s->state == 4385) [L1160] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1160] COND TRUE s->state == 4400 [L1338] EXPR s->s3 [L1338] EXPR (s->s3)->tmp.new_cipher [L1338] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1338] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1341] ret = __VERIFIER_nondet_int() [L1342] COND TRUE blastFlag == 2 [L1343] blastFlag = 3 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1347] COND FALSE !(ret <= 0) VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1353] s->state = 4416 [L1354] s->init_num = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1148] COND FALSE !(s->state == 4368) [L1151] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1151] COND FALSE !(s->state == 4369) [L1154] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1154] COND FALSE !(s->state == 4384) [L1157] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1157] COND FALSE !(s->state == 4385) [L1160] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1160] COND FALSE !(s->state == 4400) [L1163] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1163] COND FALSE !(s->state == 4401) [L1166] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1166] COND TRUE s->state == 4416 [L1358] ret = __VERIFIER_nondet_int() [L1359] COND TRUE blastFlag == 3 [L1360] blastFlag = 4 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1364] COND FALSE !(ret <= 0) [L1369] s->state = 4432 [L1370] s->init_num = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1371] COND FALSE !(! tmp___6) VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1602] EXPR s->s3 [L1602] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1602] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1631] skip = 0 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1130] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1132] EXPR s->state [L1132] state = s->state [L1133] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1133] COND FALSE !(s->state == 12292) [L1136] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1136] COND FALSE !(s->state == 16384) [L1139] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1139] COND FALSE !(s->state == 4096) [L1142] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1142] COND FALSE !(s->state == 20480) [L1145] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1145] COND FALSE !(s->state == 4099) [L1148] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1148] COND FALSE !(s->state == 4368) [L1151] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1151] COND FALSE !(s->state == 4369) [L1154] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1154] COND FALSE !(s->state == 4384) [L1157] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1157] COND FALSE !(s->state == 4385) [L1160] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1160] COND FALSE !(s->state == 4400) [L1163] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1163] COND FALSE !(s->state == 4401) [L1166] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1166] COND FALSE !(s->state == 4416) [L1169] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1169] COND FALSE !(s->state == 4417) [L1172] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483617:0}] [L1172] COND TRUE s->state == 4432 [L1380] ret = __VERIFIER_nondet_int() [L1381] COND TRUE blastFlag == 4 VAL [init=1, SSLv3_client_data={-2147483617:0}] [L3] __assert_fail("0", "s3_clnt.blast.02.i.cil-1.c", 3, "reach_error") VAL [init=1, SSLv3_client_data={-2147483617:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 130 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 89.1s, OverallIterations: 5, TraceHistogramMax: 6, AutomataDifference: 14.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 826 SDtfs, 1140 SDslu, 1405 SDs, 0 SdLazy, 753 SolverSat, 91 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 12.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 583 GetRequests, 566 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=620occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 717 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 70.4s InterpolantComputationTime, 406 NumberOfCodeBlocks, 406 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 580 ConstructedInterpolants, 0 QuantifiedInterpolants, 113470 SizeOfPredicates, 9 NumberOfNonLiveVariables, 870 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 592/592 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...