./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 f8927ec5890c81ea18bc2a9cefa5e837a618c47d .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.1-dev-20ed64e [2021-08-25 20:12:41,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-25 20:12:41,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-25 20:12:41,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-25 20:12:41,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-25 20:12:41,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-25 20:12:41,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-25 20:12:41,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-25 20:12:41,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-25 20:12:41,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-25 20:12:41,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-25 20:12:41,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-25 20:12:41,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-25 20:12:41,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-25 20:12:41,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-25 20:12:41,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-25 20:12:41,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-25 20:12:41,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-25 20:12:41,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-25 20:12:41,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-25 20:12:41,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-25 20:12:41,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-25 20:12:41,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-25 20:12:41,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-25 20:12:41,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-25 20:12:41,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-25 20:12:41,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-25 20:12:41,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-25 20:12:41,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-25 20:12:41,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-25 20:12:41,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-25 20:12:41,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-25 20:12:41,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-25 20:12:41,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-25 20:12:41,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-25 20:12:41,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-25 20:12:41,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-25 20:12:41,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-25 20:12:41,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-25 20:12:41,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-25 20:12:41,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-25 20:12:41,214 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-25 20:12:41,251 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-25 20:12:41,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-25 20:12:41,252 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-25 20:12:41,253 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-25 20:12:41,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-25 20:12:41,255 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-25 20:12:41,255 INFO L138 SettingsManager]: * Use SBE=true [2021-08-25 20:12:41,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-25 20:12:41,255 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-25 20:12:41,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-25 20:12:41,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-25 20:12:41,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-25 20:12:41,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-25 20:12:41,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-25 20:12:41,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-25 20:12:41,257 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-25 20:12:41,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-25 20:12:41,258 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-25 20:12:41,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-25 20:12:41,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-25 20:12:41,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-25 20:12:41,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-25 20:12:41,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 20:12:41,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-25 20:12:41,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-25 20:12:41,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-25 20:12:41,260 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-25 20:12:41,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-25 20:12:41,260 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-25 20:12:41,260 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-25 20:12:41,260 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8927ec5890c81ea18bc2a9cefa5e837a618c47d [2021-08-25 20:12:41,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-25 20:12:41,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-25 20:12:41,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-25 20:12:41,681 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-25 20:12:41,681 INFO L275 PluginConnector]: CDTParser initialized [2021-08-25 20:12:41,682 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-2.c [2021-08-25 20:12:41,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f277094cf/6f80c038cb824ea68cabeef77734df6b/FLAG46dd02fd1 [2021-08-25 20:12:42,233 INFO L306 CDTParser]: Found 1 translation units. [2021-08-25 20:12:42,234 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-2.c [2021-08-25 20:12:42,246 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f277094cf/6f80c038cb824ea68cabeef77734df6b/FLAG46dd02fd1 [2021-08-25 20:12:42,590 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f277094cf/6f80c038cb824ea68cabeef77734df6b [2021-08-25 20:12:42,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-25 20:12:42,605 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-25 20:12:42,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-25 20:12:42,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-25 20:12:42,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-25 20:12:42,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 08:12:42" (1/1) ... [2021-08-25 20:12:42,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b7937a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:12:42, skipping insertion in model container [2021-08-25 20:12:42,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 08:12:42" (1/1) ... [2021-08-25 20:12:42,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-25 20:12:42,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-25 20:12:42,955 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-2.c[35431,35444] [2021-08-25 20:12:42,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 20:12:42,999 INFO L203 MainTranslator]: Completed pre-run [2021-08-25 20:12:43,129 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-2.c[35431,35444] [2021-08-25 20:12:43,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 20:12:43,196 INFO L208 MainTranslator]: Completed translation [2021-08-25 20:12:43,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:12:43 WrapperNode [2021-08-25 20:12:43,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-25 20:12:43,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-25 20:12:43,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-25 20:12:43,201 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-25 20:12:43,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:12:43" (1/1) ... [2021-08-25 20:12:43,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:12:43" (1/1) ... [2021-08-25 20:12:43,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-25 20:12:43,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-25 20:12:43,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-25 20:12:43,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-25 20:12:43,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:12:43" (1/1) ... [2021-08-25 20:12:43,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:12:43" (1/1) ... [2021-08-25 20:12:43,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:12:43" (1/1) ... [2021-08-25 20:12:43,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:12:43" (1/1) ... [2021-08-25 20:12:43,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:12:43" (1/1) ... [2021-08-25 20:12:43,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:12:43" (1/1) ... [2021-08-25 20:12:43,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:12:43" (1/1) ... [2021-08-25 20:12:43,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-25 20:12:43,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-25 20:12:43,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-25 20:12:43,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-25 20:12:43,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:12:43" (1/1) ... [2021-08-25 20:12:43,340 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 20:12:43,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 20:12:43,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-25 20:12:43,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-25 20:12:43,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-25 20:12:43,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-25 20:12:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-25 20:12:43,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-25 20:12:43,688 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-25 20:12:44,272 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-08-25 20:12:44,273 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-08-25 20:12:44,282 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-25 20:12:44,282 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-25 20:12:44,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:12:44 BoogieIcfgContainer [2021-08-25 20:12:44,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-25 20:12:44,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-25 20:12:44,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-25 20:12:44,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-25 20:12:44,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 08:12:42" (1/3) ... [2021-08-25 20:12:44,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6767913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 08:12:44, skipping insertion in model container [2021-08-25 20:12:44,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:12:43" (2/3) ... [2021-08-25 20:12:44,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6767913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 08:12:44, skipping insertion in model container [2021-08-25 20:12:44,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:12:44" (3/3) ... [2021-08-25 20:12:44,293 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_4.cil-2.c [2021-08-25 20:12:44,300 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-25 20:12:44,300 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-25 20:12:44,359 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-25 20:12:44,369 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-25 20:12:44,369 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-25 20:12:44,389 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 126 states have (on average 1.7142857142857142) internal successors, (216), 127 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:44,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-25 20:12:44,396 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:12:44,397 INFO L512 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] [2021-08-25 20:12:44,397 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:12:44,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:12:44,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1457695038, now seen corresponding path program 1 times [2021-08-25 20:12:44,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:12:44,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277018709] [2021-08-25 20:12:44,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:12:44,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:12:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:12:44,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:12:44,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:12:44,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277018709] [2021-08-25 20:12:44,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277018709] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:12:44,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:12:44,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:12:44,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738562549] [2021-08-25 20:12:44,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:12:44,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:12:44,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:12:44,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:44,660 INFO L87 Difference]: Start difference. First operand has 128 states, 126 states have (on average 1.7142857142857142) internal successors, (216), 127 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:44,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:12:44,821 INFO L93 Difference]: Finished difference Result 252 states and 427 transitions. [2021-08-25 20:12:44,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:12:44,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-08-25 20:12:44,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:12:44,835 INFO L225 Difference]: With dead ends: 252 [2021-08-25 20:12:44,835 INFO L226 Difference]: Without dead ends: 115 [2021-08-25 20:12:44,839 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:44,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-08-25 20:12:44,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-08-25 20:12:44,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.5087719298245614) internal successors, (172), 114 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:44,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 172 transitions. [2021-08-25 20:12:44,890 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 172 transitions. Word has length 24 [2021-08-25 20:12:44,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:12:44,891 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 172 transitions. [2021-08-25 20:12:44,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:44,892 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 172 transitions. [2021-08-25 20:12:44,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-25 20:12:44,894 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:12:44,894 INFO L512 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] [2021-08-25 20:12:44,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-25 20:12:44,895 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:12:44,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:12:44,898 INFO L82 PathProgramCache]: Analyzing trace with hash 561717339, now seen corresponding path program 1 times [2021-08-25 20:12:44,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:12:44,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479167712] [2021-08-25 20:12:44,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:12:44,899 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:12:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:12:44,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:12:44,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:12:44,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479167712] [2021-08-25 20:12:44,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479167712] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:12:44,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:12:45,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:12:45,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449048551] [2021-08-25 20:12:45,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:12:45,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:12:45,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:12:45,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:45,004 INFO L87 Difference]: Start difference. First operand 115 states and 172 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:45,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:12:45,143 INFO L93 Difference]: Finished difference Result 238 states and 360 transitions. [2021-08-25 20:12:45,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:12:45,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-08-25 20:12:45,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:12:45,148 INFO L225 Difference]: With dead ends: 238 [2021-08-25 20:12:45,148 INFO L226 Difference]: Without dead ends: 133 [2021-08-25 20:12:45,149 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:45,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-08-25 20:12:45,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 130. [2021-08-25 20:12:45,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.4883720930232558) internal successors, (192), 129 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:45,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 192 transitions. [2021-08-25 20:12:45,169 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 192 transitions. Word has length 37 [2021-08-25 20:12:45,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:12:45,169 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 192 transitions. [2021-08-25 20:12:45,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:45,169 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 192 transitions. [2021-08-25 20:12:45,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-25 20:12:45,173 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:12:45,173 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:12:45,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-25 20:12:45,174 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:12:45,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:12:45,175 INFO L82 PathProgramCache]: Analyzing trace with hash 356453796, now seen corresponding path program 1 times [2021-08-25 20:12:45,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:12:45,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431026898] [2021-08-25 20:12:45,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:12:45,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:12:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:12:45,243 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-25 20:12:45,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:12:45,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431026898] [2021-08-25 20:12:45,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431026898] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:12:45,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:12:45,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:12:45,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182818151] [2021-08-25 20:12:45,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:12:45,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:12:45,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:12:45,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:45,246 INFO L87 Difference]: Start difference. First operand 130 states and 192 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:45,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:12:45,363 INFO L93 Difference]: Finished difference Result 271 states and 406 transitions. [2021-08-25 20:12:45,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:12:45,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-08-25 20:12:45,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:12:45,365 INFO L225 Difference]: With dead ends: 271 [2021-08-25 20:12:45,365 INFO L226 Difference]: Without dead ends: 151 [2021-08-25 20:12:45,366 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:45,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-08-25 20:12:45,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2021-08-25 20:12:45,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.4657534246575343) internal successors, (214), 146 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:45,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 214 transitions. [2021-08-25 20:12:45,373 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 214 transitions. Word has length 51 [2021-08-25 20:12:45,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:12:45,373 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 214 transitions. [2021-08-25 20:12:45,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:45,374 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 214 transitions. [2021-08-25 20:12:45,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-08-25 20:12:45,375 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:12:45,375 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:12:45,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-25 20:12:45,376 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:12:45,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:12:45,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1231505257, now seen corresponding path program 1 times [2021-08-25 20:12:45,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:12:45,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510551771] [2021-08-25 20:12:45,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:12:45,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:12:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:12:45,429 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-08-25 20:12:45,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:12:45,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510551771] [2021-08-25 20:12:45,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510551771] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:12:45,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:12:45,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:12:45,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859449372] [2021-08-25 20:12:45,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:12:45,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:12:45,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:12:45,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:45,432 INFO L87 Difference]: Start difference. First operand 147 states and 214 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:45,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:12:45,624 INFO L93 Difference]: Finished difference Result 335 states and 503 transitions. [2021-08-25 20:12:45,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:12:45,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-08-25 20:12:45,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:12:45,626 INFO L225 Difference]: With dead ends: 335 [2021-08-25 20:12:45,626 INFO L226 Difference]: Without dead ends: 197 [2021-08-25 20:12:45,627 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:45,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-08-25 20:12:45,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 188. [2021-08-25 20:12:45,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.411764705882353) internal successors, (264), 187 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:45,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 264 transitions. [2021-08-25 20:12:45,634 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 264 transitions. Word has length 68 [2021-08-25 20:12:45,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:12:45,634 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 264 transitions. [2021-08-25 20:12:45,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:45,635 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 264 transitions. [2021-08-25 20:12:45,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-08-25 20:12:45,636 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:12:45,636 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:12:45,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-25 20:12:45,637 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:12:45,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:12:45,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1258023705, now seen corresponding path program 1 times [2021-08-25 20:12:45,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:12:45,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557158710] [2021-08-25 20:12:45,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:12:45,638 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:12:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:12:45,687 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-08-25 20:12:45,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:12:45,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557158710] [2021-08-25 20:12:45,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557158710] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:12:45,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:12:45,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:12:45,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370928473] [2021-08-25 20:12:45,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:12:45,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:12:45,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:12:45,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:45,691 INFO L87 Difference]: Start difference. First operand 188 states and 264 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:45,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:12:45,793 INFO L93 Difference]: Finished difference Result 391 states and 557 transitions. [2021-08-25 20:12:45,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:12:45,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-08-25 20:12:45,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:12:45,795 INFO L225 Difference]: With dead ends: 391 [2021-08-25 20:12:45,795 INFO L226 Difference]: Without dead ends: 213 [2021-08-25 20:12:45,796 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:45,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-08-25 20:12:45,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 207. [2021-08-25 20:12:45,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.3980582524271845) internal successors, (288), 206 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:45,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 288 transitions. [2021-08-25 20:12:45,802 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 288 transitions. Word has length 68 [2021-08-25 20:12:45,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:12:45,803 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 288 transitions. [2021-08-25 20:12:45,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:45,803 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 288 transitions. [2021-08-25 20:12:45,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-08-25 20:12:45,804 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:12:45,804 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:12:45,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-25 20:12:45,805 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:12:45,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:12:45,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1378844437, now seen corresponding path program 1 times [2021-08-25 20:12:45,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:12:45,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337589900] [2021-08-25 20:12:45,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:12:45,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:12:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:12:45,865 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-08-25 20:12:45,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:12:45,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337589900] [2021-08-25 20:12:45,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337589900] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:12:45,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:12:45,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:12:45,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887862706] [2021-08-25 20:12:45,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:12:45,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:12:45,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:12:45,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:45,868 INFO L87 Difference]: Start difference. First operand 207 states and 288 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:45,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:12:45,994 INFO L93 Difference]: Finished difference Result 428 states and 604 transitions. [2021-08-25 20:12:45,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:12:45,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-08-25 20:12:45,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:12:45,997 INFO L225 Difference]: With dead ends: 428 [2021-08-25 20:12:45,997 INFO L226 Difference]: Without dead ends: 231 [2021-08-25 20:12:45,997 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:45,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-08-25 20:12:46,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 228. [2021-08-25 20:12:46,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.3832599118942732) internal successors, (314), 227 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:46,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 314 transitions. [2021-08-25 20:12:46,003 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 314 transitions. Word has length 85 [2021-08-25 20:12:46,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:12:46,004 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 314 transitions. [2021-08-25 20:12:46,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:46,004 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 314 transitions. [2021-08-25 20:12:46,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-25 20:12:46,005 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:12:46,006 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:12:46,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-25 20:12:46,006 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:12:46,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:12:46,007 INFO L82 PathProgramCache]: Analyzing trace with hash 311084899, now seen corresponding path program 1 times [2021-08-25 20:12:46,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:12:46,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789812370] [2021-08-25 20:12:46,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:12:46,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:12:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:12:46,053 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-08-25 20:12:46,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:12:46,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789812370] [2021-08-25 20:12:46,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789812370] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:12:46,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:12:46,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:12:46,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056997757] [2021-08-25 20:12:46,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:12:46,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:12:46,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:12:46,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:46,056 INFO L87 Difference]: Start difference. First operand 228 states and 314 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:46,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:12:46,084 INFO L93 Difference]: Finished difference Result 660 states and 910 transitions. [2021-08-25 20:12:46,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:12:46,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-25 20:12:46,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:12:46,087 INFO L225 Difference]: With dead ends: 660 [2021-08-25 20:12:46,087 INFO L226 Difference]: Without dead ends: 442 [2021-08-25 20:12:46,088 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:46,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-08-25 20:12:46,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2021-08-25 20:12:46,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 1.3718820861678005) internal successors, (605), 441 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:46,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 605 transitions. [2021-08-25 20:12:46,098 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 605 transitions. Word has length 105 [2021-08-25 20:12:46,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:12:46,098 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 605 transitions. [2021-08-25 20:12:46,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:46,099 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 605 transitions. [2021-08-25 20:12:46,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-25 20:12:46,100 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:12:46,100 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:12:46,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-25 20:12:46,101 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:12:46,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:12:46,101 INFO L82 PathProgramCache]: Analyzing trace with hash 990357153, now seen corresponding path program 1 times [2021-08-25 20:12:46,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:12:46,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935128918] [2021-08-25 20:12:46,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:12:46,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:12:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:12:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-08-25 20:12:46,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:12:46,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935128918] [2021-08-25 20:12:46,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935128918] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:12:46,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:12:46,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:12:46,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495156723] [2021-08-25 20:12:46,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:12:46,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:12:46,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:12:46,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:46,137 INFO L87 Difference]: Start difference. First operand 442 states and 605 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:46,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:12:46,166 INFO L93 Difference]: Finished difference Result 895 states and 1224 transitions. [2021-08-25 20:12:46,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:12:46,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-25 20:12:46,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:12:46,169 INFO L225 Difference]: With dead ends: 895 [2021-08-25 20:12:46,169 INFO L226 Difference]: Without dead ends: 463 [2021-08-25 20:12:46,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:46,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2021-08-25 20:12:46,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2021-08-25 20:12:46,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 1.367965367965368) internal successors, (632), 462 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:46,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 632 transitions. [2021-08-25 20:12:46,188 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 632 transitions. Word has length 105 [2021-08-25 20:12:46,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:12:46,188 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 632 transitions. [2021-08-25 20:12:46,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:46,189 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 632 transitions. [2021-08-25 20:12:46,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-25 20:12:46,190 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:12:46,190 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:12:46,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-25 20:12:46,191 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:12:46,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:12:46,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1829390815, now seen corresponding path program 1 times [2021-08-25 20:12:46,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:12:46,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736640091] [2021-08-25 20:12:46,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:12:46,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:12:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:12:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-08-25 20:12:46,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:12:46,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736640091] [2021-08-25 20:12:46,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736640091] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:12:46,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:12:46,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:12:46,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333978173] [2021-08-25 20:12:46,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:12:46,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:12:46,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:12:46,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:46,246 INFO L87 Difference]: Start difference. First operand 463 states and 632 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:46,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:12:46,268 INFO L93 Difference]: Finished difference Result 943 states and 1285 transitions. [2021-08-25 20:12:46,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:12:46,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-25 20:12:46,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:12:46,271 INFO L225 Difference]: With dead ends: 943 [2021-08-25 20:12:46,272 INFO L226 Difference]: Without dead ends: 490 [2021-08-25 20:12:46,273 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:46,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-08-25 20:12:46,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 490. [2021-08-25 20:12:46,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 1.361963190184049) internal successors, (666), 489 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:46,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 666 transitions. [2021-08-25 20:12:46,292 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 666 transitions. Word has length 105 [2021-08-25 20:12:46,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:12:46,292 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 666 transitions. [2021-08-25 20:12:46,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:46,293 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 666 transitions. [2021-08-25 20:12:46,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-08-25 20:12:46,294 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:12:46,294 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:12:46,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-25 20:12:46,294 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:12:46,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:12:46,295 INFO L82 PathProgramCache]: Analyzing trace with hash -915547054, now seen corresponding path program 1 times [2021-08-25 20:12:46,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:12:46,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009174302] [2021-08-25 20:12:46,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:12:46,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:12:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 20:12:46,324 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-25 20:12:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 20:12:46,409 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-25 20:12:46,410 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-25 20:12:46,411 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 20:12:46,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-25 20:12:46,418 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-25 20:12:46,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 08:12:46 BoogieIcfgContainer [2021-08-25 20:12:46,530 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-25 20:12:46,531 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-25 20:12:46,531 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-25 20:12:46,531 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-25 20:12:46,531 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:12:44" (3/4) ... [2021-08-25 20:12:46,533 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-25 20:12:46,627 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-25 20:12:46,628 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-25 20:12:46,631 INFO L168 Benchmark]: Toolchain (without parser) took 4024.15 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 41.2 MB in the beginning and 58.1 MB in the end (delta: -16.9 MB). Peak memory consumption was 26.7 MB. Max. memory is 16.1 GB. [2021-08-25 20:12:46,631 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 46.1 MB. Free memory was 28.5 MB in the beginning and 28.5 MB in the end (delta: 40.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 20:12:46,632 INFO L168 Benchmark]: CACSL2BoogieTranslator took 583.90 ms. Allocated memory is still 56.6 MB. Free memory was 41.0 MB in the beginning and 37.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-25 20:12:46,632 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.42 ms. Allocated memory is still 56.6 MB. Free memory was 37.6 MB in the beginning and 34.9 MB in the end (delta: 2.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 20:12:46,633 INFO L168 Benchmark]: Boogie Preprocessor took 36.12 ms. Allocated memory is still 56.6 MB. Free memory was 34.9 MB in the beginning and 33.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-25 20:12:46,633 INFO L168 Benchmark]: RCFGBuilder took 952.08 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 32.8 MB in the beginning and 33.3 MB in the end (delta: -548.0 kB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. [2021-08-25 20:12:46,633 INFO L168 Benchmark]: TraceAbstraction took 2243.03 ms. Allocated memory was 69.2 MB in the beginning and 100.7 MB in the end (delta: 31.5 MB). Free memory was 33.0 MB in the beginning and 72.8 MB in the end (delta: -39.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-08-25 20:12:46,634 INFO L168 Benchmark]: Witness Printer took 97.05 ms. Allocated memory is still 100.7 MB. Free memory was 71.8 MB in the beginning and 58.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-25 20:12:46,635 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 46.1 MB. Free memory was 28.5 MB in the beginning and 28.5 MB in the end (delta: 40.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 583.90 ms. Allocated memory is still 56.6 MB. Free memory was 41.0 MB in the beginning and 37.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 97.42 ms. Allocated memory is still 56.6 MB. Free memory was 37.6 MB in the beginning and 34.9 MB in the end (delta: 2.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.12 ms. Allocated memory is still 56.6 MB. Free memory was 34.9 MB in the beginning and 33.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 952.08 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 32.8 MB in the beginning and 33.3 MB in the end (delta: -548.0 kB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2243.03 ms. Allocated memory was 69.2 MB in the beginning and 100.7 MB in the end (delta: 31.5 MB). Free memory was 33.0 MB in the beginning and 72.8 MB in the end (delta: -39.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Witness Printer took 97.05 ms. Allocated memory is still 100.7 MB. Free memory was 71.8 MB in the beginning and 58.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 550]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L555] int s ; [L559] s = 12292 [L13] int s__info_callback = __VERIFIER_nondet_int() ; [L14] int s__in_handshake = __VERIFIER_nondet_int() ; [L15] int s__state ; [L16] int s__new_session ; [L17] int s__server ; [L18] int s__version = __VERIFIER_nondet_int() ; [L19] int s__type ; [L20] int s__init_num ; [L21] int s__bbio = __VERIFIER_nondet_int() ; [L22] int s__wbio = __VERIFIER_nondet_int() ; [L23] int s__hit = __VERIFIER_nondet_int() ; [L24] int s__rwstate ; [L25] int s__init_buf___0 = __VERIFIER_nondet_int() ; [L26] int s__debug = __VERIFIER_nondet_int() ; [L27] int s__shutdown ; [L28] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L29] int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_connect = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_hit = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_int() ; [L33] int s__s3__change_cipher_spec ; [L34] int s__s3__flags = __VERIFIER_nondet_int() ; [L35] int s__s3__delay_buf_pop_ret ; [L36] int s__s3__tmp__cert_req = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__new_compression = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L39] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L40] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L41] int s__s3__tmp__next_state___0 ; [L42] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int() ; [L43] int s__session__cipher ; [L44] int s__session__compress_meth ; [L45] int buf ; [L46] unsigned long tmp ; [L47] unsigned long l ; [L48] int num1 = __VERIFIER_nondet_int() ; [L49] int cb ; [L50] int ret ; [L51] int new_state ; [L52] int state ; [L53] int skip ; [L54] int tmp___0 ; [L55] int tmp___1 = __VERIFIER_nondet_int() ; [L56] int tmp___2 = __VERIFIER_nondet_int() ; [L57] int tmp___3 = __VERIFIER_nondet_int() ; [L58] int tmp___4 = __VERIFIER_nondet_int() ; [L59] int tmp___5 = __VERIFIER_nondet_int() ; [L60] int tmp___6 = __VERIFIER_nondet_int() ; [L61] int tmp___7 = __VERIFIER_nondet_int() ; [L62] int tmp___8 = __VERIFIER_nondet_int() ; [L63] int tmp___9 = __VERIFIER_nondet_int() ; [L64] int blastFlag ; [L65] int __cil_tmp55 ; [L66] unsigned long __cil_tmp56 ; [L67] long __cil_tmp57 ; [L68] long __cil_tmp58 ; [L69] long __cil_tmp59 ; [L70] long __cil_tmp60 ; [L71] long __cil_tmp61 ; [L72] long __cil_tmp62 ; [L73] long __cil_tmp63 ; [L74] long __cil_tmp64 ; [L75] long __cil_tmp65 ; [L79] s__state = initial_state [L80] blastFlag = 0 [L81] tmp = __VERIFIER_nondet_int() [L82] cb = 0 [L83] ret = -1 [L84] skip = 0 [L85] tmp___0 = 0 [L86] COND TRUE s__info_callback != 0 [L87] cb = s__info_callback [L93] s__in_handshake ++ [L94] COND FALSE !(tmp___1 + 12288) [L100] COND TRUE 1 [L102] state = s__state [L103] COND TRUE s__state == 12292 [L205] s__new_session = 1 [L206] s__state = 4096 [L207] s__ctx__stats__sess_connect_renegotiate ++ [L212] s__server = 0 [L213] COND TRUE cb != 0 [L217] __cil_tmp55 = s__version + 65280 [L218] COND FALSE !(__cil_tmp55 != 768) [L223] s__type = 4096 [L224] COND FALSE !(s__init_buf___0 == 0) [L236] COND FALSE !(! tmp___4) [L240] COND FALSE !(! tmp___5) [L244] s__state = 4368 [L245] s__ctx__stats__sess_connect ++ [L246] s__init_num = 0 [L522] COND FALSE !(! s__s3__tmp__reuse_message) [L539] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND TRUE s__state == 4368 [L250] s__shutdown = 0 [L251] ret = __VERIFIER_nondet_int() [L252] COND TRUE blastFlag == 0 [L253] blastFlag = 1 [L255] COND FALSE !(ret <= 0) [L258] s__state = 4384 [L259] s__init_num = 0 [L260] COND TRUE s__bbio != s__wbio [L522] COND FALSE !(! s__s3__tmp__reuse_message) [L539] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND TRUE s__state == 4384 [L266] ret = __VERIFIER_nondet_int() [L267] COND TRUE blastFlag == 1 [L268] blastFlag = 2 [L270] COND FALSE !(ret <= 0) [L273] COND FALSE !(\read(s__hit)) [L276] s__state = 4400 [L278] s__init_num = 0 [L522] COND FALSE !(! s__s3__tmp__reuse_message) [L539] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND TRUE s__state == 4400 [L283] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L284] COND FALSE !(__cil_tmp56 + 256UL) [L287] ret = __VERIFIER_nondet_int() [L288] COND TRUE blastFlag == 2 [L289] blastFlag = 3 [L295] COND FALSE !(ret <= 0) [L300] s__state = 4416 [L301] s__init_num = 0 [L522] COND FALSE !(! s__s3__tmp__reuse_message) [L539] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND FALSE !(s__state == 4400) [L133] COND FALSE !(s__state == 4401) [L136] COND TRUE s__state == 4416 [L305] ret = __VERIFIER_nondet_int() [L306] COND TRUE blastFlag == 3 [L307] blastFlag = 4 [L309] COND FALSE !(ret <= 0) [L312] s__state = 4432 [L313] s__init_num = 0 [L314] COND FALSE !(! tmp___6) [L522] COND FALSE !(! s__s3__tmp__reuse_message) [L539] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND FALSE !(s__state == 4400) [L133] COND FALSE !(s__state == 4401) [L136] COND FALSE !(s__state == 4416) [L139] COND FALSE !(s__state == 4417) [L142] COND TRUE s__state == 4432 [L321] ret = __VERIFIER_nondet_int() [L322] COND TRUE blastFlag == 4 [L550] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 128 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2058.9ms, OverallIterations: 10, TraceHistogramMax: 6, EmptinessCheckTime: 25.6ms, AutomataDifference: 989.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1631 SDtfs, 274 SDslu, 970 SDs, 0 SdLazy, 641 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 589.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=490occurred in iteration=9, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 129.2ms AutomataMinimizationTime, 9 MinimizatonAttempts, 25 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 41.1ms SsaConstructionTime, 222.1ms SatisfiabilityAnalysisTime, 348.5ms InterpolantComputationTime, 755 NumberOfCodeBlocks, 755 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 639 ConstructedInterpolants, 0 QuantifiedInterpolants, 957 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 586/586 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! [2021-08-25 20:12:46,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...