./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_12.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20d05092-0c77-4fa2-958d-a1f4545c389a/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20d05092-0c77-4fa2-958d-a1f4545c389a/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20d05092-0c77-4fa2-958d-a1f4545c389a/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20d05092-0c77-4fa2-958d-a1f4545c389a/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_12.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20d05092-0c77-4fa2-958d-a1f4545c389a/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20d05092-0c77-4fa2-958d-a1f4545c389a/bin/uautomizer-UnR33cPsHg --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 f62de5d75db0b2d49331dba44cec50cdc6b7f3c7cb3085015df6ef978c04ff42 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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-b2eff8b [2021-10-28 08:57:27,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:57:27,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:57:27,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:57:27,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:57:27,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:57:27,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:57:27,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:57:27,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:57:27,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:57:27,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:57:27,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:57:27,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:57:27,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:57:27,263 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:57:27,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:57:27,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:57:27,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:57:27,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:57:27,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:57:27,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:57:27,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:57:27,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:57:27,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:57:27,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:57:27,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:57:27,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:57:27,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:57:27,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:57:27,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:57:27,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:57:27,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:57:27,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:57:27,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:57:27,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:57:27,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:57:27,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:57:27,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:57:27,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:57:27,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:57:27,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:57:27,310 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20d05092-0c77-4fa2-958d-a1f4545c389a/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 08:57:27,353 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:57:27,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:57:27,354 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:57:27,354 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:57:27,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:57:27,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:57:27,356 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:57:27,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:57:27,356 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:57:27,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:57:27,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:57:27,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:57:27,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:57:27,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:57:27,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:57:27,358 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:57:27,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:57:27,358 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:57:27,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:57:27,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:57:27,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:57:27,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:57:27,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:57:27,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:57:27,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:57:27,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:57:27,360 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:57:27,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:57:27,360 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 08:57:27,361 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 08:57:27,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:57:27,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:57:27,362 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20d05092-0c77-4fa2-958d-a1f4545c389a/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20d05092-0c77-4fa2-958d-a1f4545c389a/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f62de5d75db0b2d49331dba44cec50cdc6b7f3c7cb3085015df6ef978c04ff42 [2021-10-28 08:57:27,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:57:27,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:57:27,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:57:27,635 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:57:27,636 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:57:27,637 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20d05092-0c77-4fa2-958d-a1f4545c389a/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/openssl-simplified/s3_srvr_12.cil.c [2021-10-28 08:57:27,724 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20d05092-0c77-4fa2-958d-a1f4545c389a/bin/uautomizer-UnR33cPsHg/data/8068ae034/26b68cf8a972449fb0d5d11648e3c4f8/FLAGd85057ca4 [2021-10-28 08:57:28,292 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:57:28,293 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20d05092-0c77-4fa2-958d-a1f4545c389a/sv-benchmarks/c/openssl-simplified/s3_srvr_12.cil.c [2021-10-28 08:57:28,311 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20d05092-0c77-4fa2-958d-a1f4545c389a/bin/uautomizer-UnR33cPsHg/data/8068ae034/26b68cf8a972449fb0d5d11648e3c4f8/FLAGd85057ca4 [2021-10-28 08:57:28,598 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20d05092-0c77-4fa2-958d-a1f4545c389a/bin/uautomizer-UnR33cPsHg/data/8068ae034/26b68cf8a972449fb0d5d11648e3c4f8 [2021-10-28 08:57:28,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:57:28,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:57:28,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:57:28,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:57:28,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:57:28,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:57:28" (1/1) ... [2021-10-28 08:57:28,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2da1bee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:57:28, skipping insertion in model container [2021-10-28 08:57:28,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:57:28" (1/1) ... [2021-10-28 08:57:28,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:57:28,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:57:28,888 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20d05092-0c77-4fa2-958d-a1f4545c389a/sv-benchmarks/c/openssl-simplified/s3_srvr_12.cil.c[49672,49685] [2021-10-28 08:57:28,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:57:28,903 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:57:28,964 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20d05092-0c77-4fa2-958d-a1f4545c389a/sv-benchmarks/c/openssl-simplified/s3_srvr_12.cil.c[49672,49685] [2021-10-28 08:57:28,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:57:28,980 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:57:28,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:57:28 WrapperNode [2021-10-28 08:57:28,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:57:28,982 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:57:28,982 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:57:28,982 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:57:28,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:57:28" (1/1) ... [2021-10-28 08:57:29,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:57:28" (1/1) ... [2021-10-28 08:57:29,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:57:29,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:57:29,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:57:29,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:57:29,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:57:28" (1/1) ... [2021-10-28 08:57:29,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:57:28" (1/1) ... [2021-10-28 08:57:29,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:57:28" (1/1) ... [2021-10-28 08:57:29,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:57:28" (1/1) ... [2021-10-28 08:57:29,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:57:28" (1/1) ... [2021-10-28 08:57:29,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:57:28" (1/1) ... [2021-10-28 08:57:29,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:57:28" (1/1) ... [2021-10-28 08:57:29,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:57:29,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:57:29,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:57:29,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:57:29,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:57:28" (1/1) ... [2021-10-28 08:57:29,124 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:57:29,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20d05092-0c77-4fa2-958d-a1f4545c389a/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:57:29,170 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20d05092-0c77-4fa2-958d-a1f4545c389a/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:57:29,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20d05092-0c77-4fa2-958d-a1f4545c389a/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:57:29,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:57:29,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:57:29,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:57:29,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:57:29,363 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 08:57:29,960 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-28 08:57:29,961 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-28 08:57:29,972 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:57:29,972 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-28 08:57:29,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:57:29 BoogieIcfgContainer [2021-10-28 08:57:29,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:57:29,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:57:29,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:57:29,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:57:29,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:57:28" (1/3) ... [2021-10-28 08:57:29,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70cd6933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:57:29, skipping insertion in model container [2021-10-28 08:57:29,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:57:28" (2/3) ... [2021-10-28 08:57:29,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70cd6933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:57:29, skipping insertion in model container [2021-10-28 08:57:29,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:57:29" (3/3) ... [2021-10-28 08:57:29,985 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2021-10-28 08:57:29,992 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:57:29,992 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 08:57:30,043 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:57:30,049 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, mAutomataTypeConcurrency=PETRI_NET, 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 [2021-10-28 08:57:30,049 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 08:57:30,067 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 165 states have (on average 1.7636363636363637) internal successors, (291), 166 states have internal predecessors, (291), 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) [2021-10-28 08:57:30,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 08:57:30,073 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:30,074 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:57:30,074 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:30,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:30,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1659372905, now seen corresponding path program 1 times [2021-10-28 08:57:30,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:30,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047189665] [2021-10-28 08:57:30,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:30,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:30,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:57:30,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:30,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047189665] [2021-10-28 08:57:30,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047189665] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:30,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:30,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:30,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983593589] [2021-10-28 08:57:30,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:30,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:30,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:30,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:30,409 INFO L87 Difference]: Start difference. First operand has 167 states, 165 states have (on average 1.7636363636363637) internal successors, (291), 166 states have internal predecessors, (291), 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 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-10-28 08:57:30,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:30,631 INFO L93 Difference]: Finished difference Result 353 states and 613 transitions. [2021-10-28 08:57:30,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:30,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2021-10-28 08:57:30,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:30,651 INFO L225 Difference]: With dead ends: 353 [2021-10-28 08:57:30,652 INFO L226 Difference]: Without dead ends: 174 [2021-10-28 08:57:30,657 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:30,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-28 08:57:30,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172. [2021-10-28 08:57:30,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.6198830409356726) internal successors, (277), 171 states have internal predecessors, (277), 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) [2021-10-28 08:57:30,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 277 transitions. [2021-10-28 08:57:30,701 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 277 transitions. Word has length 28 [2021-10-28 08:57:30,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:30,702 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 277 transitions. [2021-10-28 08:57:30,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-10-28 08:57:30,702 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 277 transitions. [2021-10-28 08:57:30,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 08:57:30,704 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:30,704 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:57:30,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:57:30,705 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:30,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:30,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1067837001, now seen corresponding path program 1 times [2021-10-28 08:57:30,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:30,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823422583] [2021-10-28 08:57:30,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:30,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:30,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:57:30,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:30,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823422583] [2021-10-28 08:57:30,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823422583] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:30,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:30,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:30,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261442696] [2021-10-28 08:57:30,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:30,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:30,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:30,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:30,766 INFO L87 Difference]: Start difference. First operand 172 states and 277 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2021-10-28 08:57:30,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:30,882 INFO L93 Difference]: Finished difference Result 358 states and 575 transitions. [2021-10-28 08:57:30,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:30,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 29 [2021-10-28 08:57:30,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:30,885 INFO L225 Difference]: With dead ends: 358 [2021-10-28 08:57:30,885 INFO L226 Difference]: Without dead ends: 194 [2021-10-28 08:57:30,888 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:30,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-10-28 08:57:30,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2021-10-28 08:57:30,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.5906735751295338) internal successors, (307), 193 states have internal predecessors, (307), 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) [2021-10-28 08:57:30,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 307 transitions. [2021-10-28 08:57:30,924 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 307 transitions. Word has length 29 [2021-10-28 08:57:30,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:30,924 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 307 transitions. [2021-10-28 08:57:30,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2021-10-28 08:57:30,925 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 307 transitions. [2021-10-28 08:57:30,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 08:57:30,930 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:30,931 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:57:30,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 08:57:30,931 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:30,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:30,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1369735938, now seen corresponding path program 1 times [2021-10-28 08:57:30,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:30,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054321878] [2021-10-28 08:57:30,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:30,933 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:31,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:57:31,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:31,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054321878] [2021-10-28 08:57:31,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054321878] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:31,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:31,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:31,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473401178] [2021-10-28 08:57:31,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:31,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:31,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:31,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:31,014 INFO L87 Difference]: Start difference. First operand 194 states and 307 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2021-10-28 08:57:31,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:31,126 INFO L93 Difference]: Finished difference Result 388 states and 616 transitions. [2021-10-28 08:57:31,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:31,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 29 [2021-10-28 08:57:31,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:31,129 INFO L225 Difference]: With dead ends: 388 [2021-10-28 08:57:31,129 INFO L226 Difference]: Without dead ends: 202 [2021-10-28 08:57:31,132 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:31,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-10-28 08:57:31,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2021-10-28 08:57:31,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.5979899497487438) internal successors, (318), 199 states have internal predecessors, (318), 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) [2021-10-28 08:57:31,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 318 transitions. [2021-10-28 08:57:31,163 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 318 transitions. Word has length 29 [2021-10-28 08:57:31,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:31,164 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 318 transitions. [2021-10-28 08:57:31,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2021-10-28 08:57:31,165 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 318 transitions. [2021-10-28 08:57:31,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 08:57:31,167 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:31,167 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:57:31,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 08:57:31,168 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:31,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:31,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1614302654, now seen corresponding path program 1 times [2021-10-28 08:57:31,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:31,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112191133] [2021-10-28 08:57:31,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:31,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:31,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:57:31,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:31,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112191133] [2021-10-28 08:57:31,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112191133] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:31,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:31,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:31,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713740328] [2021-10-28 08:57:31,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:31,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:31,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:31,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:31,270 INFO L87 Difference]: Start difference. First operand 200 states and 318 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2021-10-28 08:57:31,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:31,465 INFO L93 Difference]: Finished difference Result 393 states and 626 transitions. [2021-10-28 08:57:31,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:31,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 29 [2021-10-28 08:57:31,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:31,468 INFO L225 Difference]: With dead ends: 393 [2021-10-28 08:57:31,468 INFO L226 Difference]: Without dead ends: 201 [2021-10-28 08:57:31,468 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:31,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-10-28 08:57:31,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2021-10-28 08:57:31,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.595) internal successors, (319), 200 states have internal predecessors, (319), 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) [2021-10-28 08:57:31,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 319 transitions. [2021-10-28 08:57:31,478 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 319 transitions. Word has length 29 [2021-10-28 08:57:31,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:31,478 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 319 transitions. [2021-10-28 08:57:31,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2021-10-28 08:57:31,479 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 319 transitions. [2021-10-28 08:57:31,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 08:57:31,480 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:31,496 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:57:31,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 08:57:31,496 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:31,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:31,497 INFO L85 PathProgramCache]: Analyzing trace with hash -210698213, now seen corresponding path program 1 times [2021-10-28 08:57:31,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:31,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598362959] [2021-10-28 08:57:31,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:31,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:31,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:57:31,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:31,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598362959] [2021-10-28 08:57:31,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598362959] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:31,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:31,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:31,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659924862] [2021-10-28 08:57:31,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:31,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:31,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:31,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:31,573 INFO L87 Difference]: Start difference. First operand 201 states and 319 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-10-28 08:57:31,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:31,716 INFO L93 Difference]: Finished difference Result 404 states and 638 transitions. [2021-10-28 08:57:31,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:31,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2021-10-28 08:57:31,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:31,719 INFO L225 Difference]: With dead ends: 404 [2021-10-28 08:57:31,719 INFO L226 Difference]: Without dead ends: 211 [2021-10-28 08:57:31,719 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:31,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-10-28 08:57:31,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 201. [2021-10-28 08:57:31,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.585) internal successors, (317), 200 states have internal predecessors, (317), 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) [2021-10-28 08:57:31,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 317 transitions. [2021-10-28 08:57:31,729 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 317 transitions. Word has length 30 [2021-10-28 08:57:31,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:31,730 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 317 transitions. [2021-10-28 08:57:31,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-10-28 08:57:31,730 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 317 transitions. [2021-10-28 08:57:31,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 08:57:31,731 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:31,731 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:57:31,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 08:57:31,732 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:31,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:31,732 INFO L85 PathProgramCache]: Analyzing trace with hash -852120702, now seen corresponding path program 1 times [2021-10-28 08:57:31,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:31,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749070187] [2021-10-28 08:57:31,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:31,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:31,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:57:31,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:31,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749070187] [2021-10-28 08:57:31,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749070187] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:31,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:31,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:31,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622219000] [2021-10-28 08:57:31,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:31,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:31,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:31,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:31,774 INFO L87 Difference]: Start difference. First operand 201 states and 317 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2021-10-28 08:57:31,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:31,908 INFO L93 Difference]: Finished difference Result 404 states and 634 transitions. [2021-10-28 08:57:31,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:31,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2021-10-28 08:57:31,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:31,918 INFO L225 Difference]: With dead ends: 404 [2021-10-28 08:57:31,918 INFO L226 Difference]: Without dead ends: 211 [2021-10-28 08:57:31,918 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:31,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-10-28 08:57:31,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 201. [2021-10-28 08:57:31,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.575) internal successors, (315), 200 states have internal predecessors, (315), 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) [2021-10-28 08:57:31,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 315 transitions. [2021-10-28 08:57:31,931 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 315 transitions. Word has length 31 [2021-10-28 08:57:31,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:31,931 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 315 transitions. [2021-10-28 08:57:31,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2021-10-28 08:57:31,932 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 315 transitions. [2021-10-28 08:57:31,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 08:57:31,934 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:31,934 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:57:31,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 08:57:31,934 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:31,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:31,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1795373184, now seen corresponding path program 1 times [2021-10-28 08:57:31,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:31,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965781169] [2021-10-28 08:57:31,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:31,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:32,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:57:32,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:32,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965781169] [2021-10-28 08:57:32,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965781169] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:32,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:32,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:32,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413712454] [2021-10-28 08:57:32,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:32,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:32,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:32,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:32,014 INFO L87 Difference]: Start difference. First operand 201 states and 315 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-10-28 08:57:32,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:32,128 INFO L93 Difference]: Finished difference Result 404 states and 630 transitions. [2021-10-28 08:57:32,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:32,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2021-10-28 08:57:32,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:32,130 INFO L225 Difference]: With dead ends: 404 [2021-10-28 08:57:32,130 INFO L226 Difference]: Without dead ends: 211 [2021-10-28 08:57:32,131 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:32,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-10-28 08:57:32,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 201. [2021-10-28 08:57:32,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.565) internal successors, (313), 200 states have internal predecessors, (313), 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) [2021-10-28 08:57:32,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 313 transitions. [2021-10-28 08:57:32,140 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 313 transitions. Word has length 32 [2021-10-28 08:57:32,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:32,140 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 313 transitions. [2021-10-28 08:57:32,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-10-28 08:57:32,141 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 313 transitions. [2021-10-28 08:57:32,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 08:57:32,141 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:32,141 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:57:32,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 08:57:32,142 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:32,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:32,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1439838815, now seen corresponding path program 1 times [2021-10-28 08:57:32,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:32,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598854166] [2021-10-28 08:57:32,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:32,143 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:32,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:57:32,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:32,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598854166] [2021-10-28 08:57:32,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598854166] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:32,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:32,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:57:32,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818732999] [2021-10-28 08:57:32,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:57:32,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:32,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:57:32,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:57:32,212 INFO L87 Difference]: Start difference. First operand 201 states and 313 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2021-10-28 08:57:32,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:32,435 INFO L93 Difference]: Finished difference Result 600 states and 930 transitions. [2021-10-28 08:57:32,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:57:32,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 32 [2021-10-28 08:57:32,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:32,439 INFO L225 Difference]: With dead ends: 600 [2021-10-28 08:57:32,439 INFO L226 Difference]: Without dead ends: 407 [2021-10-28 08:57:32,439 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:57:32,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-10-28 08:57:32,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 383. [2021-10-28 08:57:32,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 1.557591623036649) internal successors, (595), 382 states have internal predecessors, (595), 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) [2021-10-28 08:57:32,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 595 transitions. [2021-10-28 08:57:32,461 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 595 transitions. Word has length 32 [2021-10-28 08:57:32,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:32,462 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 595 transitions. [2021-10-28 08:57:32,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2021-10-28 08:57:32,462 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 595 transitions. [2021-10-28 08:57:32,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-28 08:57:32,463 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:32,463 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:57:32,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 08:57:32,464 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:32,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:32,464 INFO L85 PathProgramCache]: Analyzing trace with hash -443745160, now seen corresponding path program 1 times [2021-10-28 08:57:32,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:32,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866806758] [2021-10-28 08:57:32,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:32,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:32,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:57:32,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:32,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866806758] [2021-10-28 08:57:32,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866806758] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:32,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:32,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:32,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862805558] [2021-10-28 08:57:32,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:32,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:32,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:32,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:32,519 INFO L87 Difference]: Start difference. First operand 383 states and 595 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-10-28 08:57:32,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:32,662 INFO L93 Difference]: Finished difference Result 842 states and 1324 transitions. [2021-10-28 08:57:32,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:32,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2021-10-28 08:57:32,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:32,666 INFO L225 Difference]: With dead ends: 842 [2021-10-28 08:57:32,666 INFO L226 Difference]: Without dead ends: 467 [2021-10-28 08:57:32,667 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:32,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-10-28 08:57:32,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 449. [2021-10-28 08:57:32,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.5848214285714286) internal successors, (710), 448 states have internal predecessors, (710), 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) [2021-10-28 08:57:32,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 710 transitions. [2021-10-28 08:57:32,689 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 710 transitions. Word has length 44 [2021-10-28 08:57:32,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:32,689 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 710 transitions. [2021-10-28 08:57:32,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-10-28 08:57:32,690 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 710 transitions. [2021-10-28 08:57:32,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-28 08:57:32,691 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:32,691 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:57:32,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 08:57:32,692 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:32,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:32,692 INFO L85 PathProgramCache]: Analyzing trace with hash 974176282, now seen corresponding path program 1 times [2021-10-28 08:57:32,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:32,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921344076] [2021-10-28 08:57:32,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:32,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:32,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:57:32,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:32,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921344076] [2021-10-28 08:57:32,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921344076] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:32,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:32,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:32,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905924893] [2021-10-28 08:57:32,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:32,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:32,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:32,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:32,751 INFO L87 Difference]: Start difference. First operand 449 states and 710 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-10-28 08:57:32,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:32,895 INFO L93 Difference]: Finished difference Result 931 states and 1482 transitions. [2021-10-28 08:57:32,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:32,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2021-10-28 08:57:32,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:32,899 INFO L225 Difference]: With dead ends: 931 [2021-10-28 08:57:32,899 INFO L226 Difference]: Without dead ends: 490 [2021-10-28 08:57:32,900 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:32,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-10-28 08:57:32,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 472. [2021-10-28 08:57:32,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 471 states have (on average 1.5987261146496816) internal successors, (753), 471 states have internal predecessors, (753), 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) [2021-10-28 08:57:32,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 753 transitions. [2021-10-28 08:57:32,937 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 753 transitions. Word has length 45 [2021-10-28 08:57:32,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:32,937 INFO L470 AbstractCegarLoop]: Abstraction has 472 states and 753 transitions. [2021-10-28 08:57:32,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-10-28 08:57:32,938 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 753 transitions. [2021-10-28 08:57:32,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-28 08:57:32,939 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:32,940 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:57:32,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 08:57:32,940 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:32,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:32,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1540899075, now seen corresponding path program 1 times [2021-10-28 08:57:32,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:32,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716523855] [2021-10-28 08:57:32,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:32,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:32,994 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 08:57:32,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:32,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716523855] [2021-10-28 08:57:32,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716523855] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:32,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:32,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:32,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944336633] [2021-10-28 08:57:32,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:32,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:32,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:32,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:32,997 INFO L87 Difference]: Start difference. First operand 472 states and 753 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2021-10-28 08:57:33,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:33,125 INFO L93 Difference]: Finished difference Result 988 states and 1578 transitions. [2021-10-28 08:57:33,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:33,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 56 [2021-10-28 08:57:33,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:33,129 INFO L225 Difference]: With dead ends: 988 [2021-10-28 08:57:33,129 INFO L226 Difference]: Without dead ends: 524 [2021-10-28 08:57:33,130 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:33,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-10-28 08:57:33,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 506. [2021-10-28 08:57:33,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 505 states have (on average 1.5920792079207922) internal successors, (804), 505 states have internal predecessors, (804), 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) [2021-10-28 08:57:33,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 804 transitions. [2021-10-28 08:57:33,153 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 804 transitions. Word has length 56 [2021-10-28 08:57:33,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:33,154 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 804 transitions. [2021-10-28 08:57:33,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2021-10-28 08:57:33,154 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 804 transitions. [2021-10-28 08:57:33,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-28 08:57:33,155 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:33,156 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:57:33,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 08:57:33,156 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:33,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:33,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1188180310, now seen corresponding path program 1 times [2021-10-28 08:57:33,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:33,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581272404] [2021-10-28 08:57:33,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:33,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:33,189 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 08:57:33,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:33,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581272404] [2021-10-28 08:57:33,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581272404] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:33,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:33,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:33,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991400163] [2021-10-28 08:57:33,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:33,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:33,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:33,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:33,192 INFO L87 Difference]: Start difference. First operand 506 states and 804 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2021-10-28 08:57:33,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:33,317 INFO L93 Difference]: Finished difference Result 1022 states and 1626 transitions. [2021-10-28 08:57:33,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:33,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 57 [2021-10-28 08:57:33,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:33,321 INFO L225 Difference]: With dead ends: 1022 [2021-10-28 08:57:33,321 INFO L226 Difference]: Without dead ends: 524 [2021-10-28 08:57:33,322 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:33,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-10-28 08:57:33,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 506. [2021-10-28 08:57:33,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 505 states have (on average 1.5861386138613862) internal successors, (801), 505 states have internal predecessors, (801), 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) [2021-10-28 08:57:33,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 801 transitions. [2021-10-28 08:57:33,346 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 801 transitions. Word has length 57 [2021-10-28 08:57:33,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:33,347 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 801 transitions. [2021-10-28 08:57:33,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2021-10-28 08:57:33,347 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 801 transitions. [2021-10-28 08:57:33,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-28 08:57:33,348 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:33,349 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:57:33,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 08:57:33,349 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:33,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:33,350 INFO L85 PathProgramCache]: Analyzing trace with hash -2067348000, now seen corresponding path program 1 times [2021-10-28 08:57:33,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:33,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042707955] [2021-10-28 08:57:33,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:33,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:33,383 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 08:57:33,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:33,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042707955] [2021-10-28 08:57:33,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042707955] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:33,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:33,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:33,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688685172] [2021-10-28 08:57:33,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:33,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:33,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:33,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:33,386 INFO L87 Difference]: Start difference. First operand 506 states and 801 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2021-10-28 08:57:33,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:33,523 INFO L93 Difference]: Finished difference Result 1069 states and 1697 transitions. [2021-10-28 08:57:33,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:33,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 57 [2021-10-28 08:57:33,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:33,528 INFO L225 Difference]: With dead ends: 1069 [2021-10-28 08:57:33,528 INFO L226 Difference]: Without dead ends: 571 [2021-10-28 08:57:33,529 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:33,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-10-28 08:57:33,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 569. [2021-10-28 08:57:33,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 1.5809859154929577) internal successors, (898), 568 states have internal predecessors, (898), 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) [2021-10-28 08:57:33,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 898 transitions. [2021-10-28 08:57:33,564 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 898 transitions. Word has length 57 [2021-10-28 08:57:33,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:33,565 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 898 transitions. [2021-10-28 08:57:33,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2021-10-28 08:57:33,566 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 898 transitions. [2021-10-28 08:57:33,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-28 08:57:33,567 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:33,567 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:57:33,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 08:57:33,568 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:33,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:33,568 INFO L85 PathProgramCache]: Analyzing trace with hash -583256949, now seen corresponding path program 1 times [2021-10-28 08:57:33,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:33,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996168673] [2021-10-28 08:57:33,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:33,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:33,631 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:57:33,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:33,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996168673] [2021-10-28 08:57:33,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996168673] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:33,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:33,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:33,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791423850] [2021-10-28 08:57:33,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:33,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:33,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:33,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:33,634 INFO L87 Difference]: Start difference. First operand 569 states and 898 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2021-10-28 08:57:33,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:33,772 INFO L93 Difference]: Finished difference Result 1179 states and 1859 transitions. [2021-10-28 08:57:33,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:33,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2021-10-28 08:57:33,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:33,776 INFO L225 Difference]: With dead ends: 1179 [2021-10-28 08:57:33,776 INFO L226 Difference]: Without dead ends: 618 [2021-10-28 08:57:33,777 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:33,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-10-28 08:57:33,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 612. [2021-10-28 08:57:33,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 611 states have (on average 1.574468085106383) internal successors, (962), 611 states have internal predecessors, (962), 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) [2021-10-28 08:57:33,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 962 transitions. [2021-10-28 08:57:33,807 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 962 transitions. Word has length 79 [2021-10-28 08:57:33,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:33,807 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 962 transitions. [2021-10-28 08:57:33,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2021-10-28 08:57:33,808 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 962 transitions. [2021-10-28 08:57:33,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-28 08:57:33,809 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:33,810 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:57:33,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-28 08:57:33,810 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:33,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:33,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1357251849, now seen corresponding path program 1 times [2021-10-28 08:57:33,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:33,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558067603] [2021-10-28 08:57:33,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:33,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:33,869 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:57:33,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:33,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558067603] [2021-10-28 08:57:33,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558067603] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:33,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:33,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:33,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081217300] [2021-10-28 08:57:33,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:33,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:33,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:33,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:33,871 INFO L87 Difference]: Start difference. First operand 612 states and 962 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2021-10-28 08:57:34,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:34,017 INFO L93 Difference]: Finished difference Result 1222 states and 1920 transitions. [2021-10-28 08:57:34,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:34,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2021-10-28 08:57:34,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:34,022 INFO L225 Difference]: With dead ends: 1222 [2021-10-28 08:57:34,022 INFO L226 Difference]: Without dead ends: 618 [2021-10-28 08:57:34,025 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:34,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-10-28 08:57:34,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 612. [2021-10-28 08:57:34,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 611 states have (on average 1.5695581014729951) internal successors, (959), 611 states have internal predecessors, (959), 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) [2021-10-28 08:57:34,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 959 transitions. [2021-10-28 08:57:34,055 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 959 transitions. Word has length 80 [2021-10-28 08:57:34,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:34,055 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 959 transitions. [2021-10-28 08:57:34,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2021-10-28 08:57:34,055 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 959 transitions. [2021-10-28 08:57:34,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-28 08:57:34,057 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:34,057 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:57:34,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-28 08:57:34,058 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:34,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:34,058 INFO L85 PathProgramCache]: Analyzing trace with hash 2054627548, now seen corresponding path program 1 times [2021-10-28 08:57:34,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:34,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439422640] [2021-10-28 08:57:34,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:34,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:34,099 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 08:57:34,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:34,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439422640] [2021-10-28 08:57:34,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439422640] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:34,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:34,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:34,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042275549] [2021-10-28 08:57:34,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:34,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:34,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:34,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:34,103 INFO L87 Difference]: Start difference. First operand 612 states and 959 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-10-28 08:57:34,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:34,242 INFO L93 Difference]: Finished difference Result 1218 states and 1908 transitions. [2021-10-28 08:57:34,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:34,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 [2021-10-28 08:57:34,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:34,246 INFO L225 Difference]: With dead ends: 1218 [2021-10-28 08:57:34,247 INFO L226 Difference]: Without dead ends: 614 [2021-10-28 08:57:34,250 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:34,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-10-28 08:57:34,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 612. [2021-10-28 08:57:34,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 611 states have (on average 1.5613747954173487) internal successors, (954), 611 states have internal predecessors, (954), 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) [2021-10-28 08:57:34,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 954 transitions. [2021-10-28 08:57:34,279 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 954 transitions. Word has length 85 [2021-10-28 08:57:34,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:34,279 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 954 transitions. [2021-10-28 08:57:34,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-10-28 08:57:34,279 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 954 transitions. [2021-10-28 08:57:34,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-28 08:57:34,281 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:34,281 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:57:34,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-28 08:57:34,282 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:34,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:34,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1047765588, now seen corresponding path program 1 times [2021-10-28 08:57:34,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:34,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506196917] [2021-10-28 08:57:34,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:34,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:34,321 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-28 08:57:34,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:34,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506196917] [2021-10-28 08:57:34,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506196917] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:34,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:34,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:34,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453589191] [2021-10-28 08:57:34,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:34,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:34,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:34,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:34,324 INFO L87 Difference]: Start difference. First operand 612 states and 954 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-10-28 08:57:34,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:34,463 INFO L93 Difference]: Finished difference Result 1276 states and 1991 transitions. [2021-10-28 08:57:34,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:34,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 93 [2021-10-28 08:57:34,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:34,468 INFO L225 Difference]: With dead ends: 1276 [2021-10-28 08:57:34,468 INFO L226 Difference]: Without dead ends: 672 [2021-10-28 08:57:34,469 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:34,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-10-28 08:57:34,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 644. [2021-10-28 08:57:34,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 643 states have (on average 1.5505443234836702) internal successors, (997), 643 states have internal predecessors, (997), 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) [2021-10-28 08:57:34,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 997 transitions. [2021-10-28 08:57:34,502 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 997 transitions. Word has length 93 [2021-10-28 08:57:34,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:34,502 INFO L470 AbstractCegarLoop]: Abstraction has 644 states and 997 transitions. [2021-10-28 08:57:34,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-10-28 08:57:34,502 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 997 transitions. [2021-10-28 08:57:34,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-10-28 08:57:34,504 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:34,504 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:57:34,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-28 08:57:34,505 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:34,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:34,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1111400187, now seen corresponding path program 1 times [2021-10-28 08:57:34,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:34,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418293139] [2021-10-28 08:57:34,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:34,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:34,538 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-28 08:57:34,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:34,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418293139] [2021-10-28 08:57:34,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418293139] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:34,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:34,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:34,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856767432] [2021-10-28 08:57:34,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:34,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:34,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:34,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:34,542 INFO L87 Difference]: Start difference. First operand 644 states and 997 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2021-10-28 08:57:34,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:34,678 INFO L93 Difference]: Finished difference Result 1308 states and 2028 transitions. [2021-10-28 08:57:34,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:34,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 94 [2021-10-28 08:57:34,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:34,683 INFO L225 Difference]: With dead ends: 1308 [2021-10-28 08:57:34,683 INFO L226 Difference]: Without dead ends: 672 [2021-10-28 08:57:34,684 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:34,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-10-28 08:57:34,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 644. [2021-10-28 08:57:34,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 643 states have (on average 1.5412130637636081) internal successors, (991), 643 states have internal predecessors, (991), 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) [2021-10-28 08:57:34,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 991 transitions. [2021-10-28 08:57:34,729 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 991 transitions. Word has length 94 [2021-10-28 08:57:34,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:34,730 INFO L470 AbstractCegarLoop]: Abstraction has 644 states and 991 transitions. [2021-10-28 08:57:34,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2021-10-28 08:57:34,731 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 991 transitions. [2021-10-28 08:57:34,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-28 08:57:34,732 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:34,733 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-28 08:57:34,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-28 08:57:34,733 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:34,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:34,734 INFO L85 PathProgramCache]: Analyzing trace with hash -51700436, now seen corresponding path program 1 times [2021-10-28 08:57:34,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:34,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40595954] [2021-10-28 08:57:34,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:34,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:34,773 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 08:57:34,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:34,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40595954] [2021-10-28 08:57:34,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40595954] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:34,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:34,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:34,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967382619] [2021-10-28 08:57:34,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:34,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:34,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:34,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:34,777 INFO L87 Difference]: Start difference. First operand 644 states and 991 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2021-10-28 08:57:34,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:34,942 INFO L93 Difference]: Finished difference Result 1344 states and 2068 transitions. [2021-10-28 08:57:34,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:34,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 100 [2021-10-28 08:57:34,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:34,947 INFO L225 Difference]: With dead ends: 1344 [2021-10-28 08:57:34,947 INFO L226 Difference]: Without dead ends: 708 [2021-10-28 08:57:34,948 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:34,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2021-10-28 08:57:34,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 696. [2021-10-28 08:57:34,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 695 states have (on average 1.5352517985611511) internal successors, (1067), 695 states have internal predecessors, (1067), 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) [2021-10-28 08:57:34,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1067 transitions. [2021-10-28 08:57:34,980 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1067 transitions. Word has length 100 [2021-10-28 08:57:34,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:34,980 INFO L470 AbstractCegarLoop]: Abstraction has 696 states and 1067 transitions. [2021-10-28 08:57:34,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2021-10-28 08:57:34,981 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1067 transitions. [2021-10-28 08:57:34,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-28 08:57:34,983 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:34,983 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-28 08:57:34,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-28 08:57:34,983 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:34,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:34,984 INFO L85 PathProgramCache]: Analyzing trace with hash -530812530, now seen corresponding path program 1 times [2021-10-28 08:57:34,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:34,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056628335] [2021-10-28 08:57:34,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:34,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:35,028 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 08:57:35,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:35,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056628335] [2021-10-28 08:57:35,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056628335] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:35,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:35,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:35,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892566028] [2021-10-28 08:57:35,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:35,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:35,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:35,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:35,031 INFO L87 Difference]: Start difference. First operand 696 states and 1067 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2021-10-28 08:57:35,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:35,194 INFO L93 Difference]: Finished difference Result 1401 states and 2150 transitions. [2021-10-28 08:57:35,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:35,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 101 [2021-10-28 08:57:35,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:35,198 INFO L225 Difference]: With dead ends: 1401 [2021-10-28 08:57:35,199 INFO L226 Difference]: Without dead ends: 709 [2021-10-28 08:57:35,200 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:35,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2021-10-28 08:57:35,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 697. [2021-10-28 08:57:35,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 696 states have (on average 1.5344827586206897) internal successors, (1068), 696 states have internal predecessors, (1068), 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) [2021-10-28 08:57:35,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1068 transitions. [2021-10-28 08:57:35,236 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1068 transitions. Word has length 101 [2021-10-28 08:57:35,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:35,236 INFO L470 AbstractCegarLoop]: Abstraction has 697 states and 1068 transitions. [2021-10-28 08:57:35,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2021-10-28 08:57:35,236 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1068 transitions. [2021-10-28 08:57:35,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-10-28 08:57:35,238 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:35,238 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-28 08:57:35,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-28 08:57:35,239 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:35,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:35,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1306174224, now seen corresponding path program 1 times [2021-10-28 08:57:35,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:35,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204008575] [2021-10-28 08:57:35,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:35,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:35,287 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-10-28 08:57:35,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:35,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204008575] [2021-10-28 08:57:35,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204008575] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:35,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:35,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:35,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798674412] [2021-10-28 08:57:35,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:35,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:35,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:35,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:35,290 INFO L87 Difference]: Start difference. First operand 697 states and 1068 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) [2021-10-28 08:57:35,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:35,441 INFO L93 Difference]: Finished difference Result 1433 states and 2192 transitions. [2021-10-28 08:57:35,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:35,441 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 112 [2021-10-28 08:57:35,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:35,445 INFO L225 Difference]: With dead ends: 1433 [2021-10-28 08:57:35,446 INFO L226 Difference]: Without dead ends: 744 [2021-10-28 08:57:35,447 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:35,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2021-10-28 08:57:35,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 738. [2021-10-28 08:57:35,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 737 states have (on average 1.5237449118046134) internal successors, (1123), 737 states have internal predecessors, (1123), 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) [2021-10-28 08:57:35,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1123 transitions. [2021-10-28 08:57:35,484 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1123 transitions. Word has length 112 [2021-10-28 08:57:35,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:35,485 INFO L470 AbstractCegarLoop]: Abstraction has 738 states and 1123 transitions. [2021-10-28 08:57:35,485 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) [2021-10-28 08:57:35,485 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1123 transitions. [2021-10-28 08:57:35,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-28 08:57:35,487 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:35,487 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-28 08:57:35,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-28 08:57:35,487 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:35,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:35,488 INFO L85 PathProgramCache]: Analyzing trace with hash -142977294, now seen corresponding path program 1 times [2021-10-28 08:57:35,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:35,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084951761] [2021-10-28 08:57:35,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:35,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:35,535 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-10-28 08:57:35,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:35,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084951761] [2021-10-28 08:57:35,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084951761] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:35,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:35,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:35,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134253552] [2021-10-28 08:57:35,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:35,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:35,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:35,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:35,538 INFO L87 Difference]: Start difference. First operand 738 states and 1123 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2021-10-28 08:57:35,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:35,689 INFO L93 Difference]: Finished difference Result 1474 states and 2242 transitions. [2021-10-28 08:57:35,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:35,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 113 [2021-10-28 08:57:35,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:35,695 INFO L225 Difference]: With dead ends: 1474 [2021-10-28 08:57:35,695 INFO L226 Difference]: Without dead ends: 744 [2021-10-28 08:57:35,697 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:35,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2021-10-28 08:57:35,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 738. [2021-10-28 08:57:35,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 737 states have (on average 1.5169606512890095) internal successors, (1118), 737 states have internal predecessors, (1118), 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) [2021-10-28 08:57:35,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1118 transitions. [2021-10-28 08:57:35,731 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1118 transitions. Word has length 113 [2021-10-28 08:57:35,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:35,731 INFO L470 AbstractCegarLoop]: Abstraction has 738 states and 1118 transitions. [2021-10-28 08:57:35,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2021-10-28 08:57:35,732 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1118 transitions. [2021-10-28 08:57:35,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-28 08:57:35,733 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:35,734 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-28 08:57:35,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-28 08:57:35,734 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:35,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:35,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1809562376, now seen corresponding path program 1 times [2021-10-28 08:57:35,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:35,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78131867] [2021-10-28 08:57:35,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:35,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:35,769 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-10-28 08:57:35,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:35,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78131867] [2021-10-28 08:57:35,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78131867] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:35,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:35,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:35,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183644137] [2021-10-28 08:57:35,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:35,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:35,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:35,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:35,774 INFO L87 Difference]: Start difference. First operand 738 states and 1118 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2021-10-28 08:57:35,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:35,913 INFO L93 Difference]: Finished difference Result 1510 states and 2285 transitions. [2021-10-28 08:57:35,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:35,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 115 [2021-10-28 08:57:35,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:35,918 INFO L225 Difference]: With dead ends: 1510 [2021-10-28 08:57:35,918 INFO L226 Difference]: Without dead ends: 780 [2021-10-28 08:57:35,919 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:35,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-10-28 08:57:35,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 770. [2021-10-28 08:57:35,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 769 states have (on average 1.5032509752925878) internal successors, (1156), 769 states have internal predecessors, (1156), 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) [2021-10-28 08:57:35,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1156 transitions. [2021-10-28 08:57:35,955 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1156 transitions. Word has length 115 [2021-10-28 08:57:35,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:35,955 INFO L470 AbstractCegarLoop]: Abstraction has 770 states and 1156 transitions. [2021-10-28 08:57:35,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2021-10-28 08:57:35,956 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1156 transitions. [2021-10-28 08:57:35,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-10-28 08:57:35,957 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:35,957 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-28 08:57:35,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-28 08:57:35,958 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:35,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:35,958 INFO L85 PathProgramCache]: Analyzing trace with hash 172042817, now seen corresponding path program 1 times [2021-10-28 08:57:35,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:35,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204842225] [2021-10-28 08:57:35,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:35,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:35,997 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-10-28 08:57:35,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:35,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204842225] [2021-10-28 08:57:35,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204842225] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:35,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:35,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:35,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784562790] [2021-10-28 08:57:35,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:35,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:35,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:35,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:35,999 INFO L87 Difference]: Start difference. First operand 770 states and 1156 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2021-10-28 08:57:36,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:36,134 INFO L93 Difference]: Finished difference Result 1542 states and 2314 transitions. [2021-10-28 08:57:36,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:36,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 116 [2021-10-28 08:57:36,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:36,139 INFO L225 Difference]: With dead ends: 1542 [2021-10-28 08:57:36,139 INFO L226 Difference]: Without dead ends: 780 [2021-10-28 08:57:36,141 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:36,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-10-28 08:57:36,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 770. [2021-10-28 08:57:36,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 769 states have (on average 1.4915474642392719) internal successors, (1147), 769 states have internal predecessors, (1147), 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) [2021-10-28 08:57:36,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1147 transitions. [2021-10-28 08:57:36,176 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1147 transitions. Word has length 116 [2021-10-28 08:57:36,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:36,176 INFO L470 AbstractCegarLoop]: Abstraction has 770 states and 1147 transitions. [2021-10-28 08:57:36,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2021-10-28 08:57:36,177 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1147 transitions. [2021-10-28 08:57:36,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-10-28 08:57:36,179 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:36,179 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:57:36,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-28 08:57:36,180 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:36,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:36,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1961382768, now seen corresponding path program 1 times [2021-10-28 08:57:36,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:36,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100404460] [2021-10-28 08:57:36,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:36,182 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:36,234 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-10-28 08:57:36,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:36,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100404460] [2021-10-28 08:57:36,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100404460] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:36,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:36,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:36,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614672204] [2021-10-28 08:57:36,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:36,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:36,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:36,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:36,242 INFO L87 Difference]: Start difference. First operand 770 states and 1147 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2021-10-28 08:57:36,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:36,381 INFO L93 Difference]: Finished difference Result 1568 states and 2335 transitions. [2021-10-28 08:57:36,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:36,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 137 [2021-10-28 08:57:36,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:36,387 INFO L225 Difference]: With dead ends: 1568 [2021-10-28 08:57:36,387 INFO L226 Difference]: Without dead ends: 806 [2021-10-28 08:57:36,388 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:36,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2021-10-28 08:57:36,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 798. [2021-10-28 08:57:36,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 797 states have (on average 1.478042659974906) internal successors, (1178), 797 states have internal predecessors, (1178), 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) [2021-10-28 08:57:36,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1178 transitions. [2021-10-28 08:57:36,431 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1178 transitions. Word has length 137 [2021-10-28 08:57:36,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:36,432 INFO L470 AbstractCegarLoop]: Abstraction has 798 states and 1178 transitions. [2021-10-28 08:57:36,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2021-10-28 08:57:36,433 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1178 transitions. [2021-10-28 08:57:36,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-10-28 08:57:36,435 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:36,435 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:57:36,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-28 08:57:36,435 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:36,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:36,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1483046825, now seen corresponding path program 1 times [2021-10-28 08:57:36,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:36,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49688461] [2021-10-28 08:57:36,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:36,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:36,472 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-10-28 08:57:36,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:36,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49688461] [2021-10-28 08:57:36,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49688461] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:36,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:36,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:36,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568734595] [2021-10-28 08:57:36,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:36,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:36,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:36,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:36,475 INFO L87 Difference]: Start difference. First operand 798 states and 1178 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2021-10-28 08:57:36,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:36,599 INFO L93 Difference]: Finished difference Result 1596 states and 2356 transitions. [2021-10-28 08:57:36,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:36,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 138 [2021-10-28 08:57:36,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:36,604 INFO L225 Difference]: With dead ends: 1596 [2021-10-28 08:57:36,604 INFO L226 Difference]: Without dead ends: 806 [2021-10-28 08:57:36,605 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:36,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2021-10-28 08:57:36,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 798. [2021-10-28 08:57:36,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 797 states have (on average 1.465495608531995) internal successors, (1168), 797 states have internal predecessors, (1168), 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) [2021-10-28 08:57:36,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1168 transitions. [2021-10-28 08:57:36,642 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1168 transitions. Word has length 138 [2021-10-28 08:57:36,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:36,642 INFO L470 AbstractCegarLoop]: Abstraction has 798 states and 1168 transitions. [2021-10-28 08:57:36,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2021-10-28 08:57:36,642 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1168 transitions. [2021-10-28 08:57:36,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-10-28 08:57:36,645 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:36,645 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:57:36,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-28 08:57:36,645 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:36,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:36,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1313212300, now seen corresponding path program 1 times [2021-10-28 08:57:36,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:36,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858423113] [2021-10-28 08:57:36,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:36,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:36,676 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-10-28 08:57:36,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:36,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858423113] [2021-10-28 08:57:36,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858423113] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:36,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:36,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:36,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238527000] [2021-10-28 08:57:36,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:36,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:36,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:36,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:36,678 INFO L87 Difference]: Start difference. First operand 798 states and 1168 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2021-10-28 08:57:36,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:36,846 INFO L93 Difference]: Finished difference Result 1651 states and 2410 transitions. [2021-10-28 08:57:36,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:36,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 141 [2021-10-28 08:57:36,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:36,852 INFO L225 Difference]: With dead ends: 1651 [2021-10-28 08:57:36,852 INFO L226 Difference]: Without dead ends: 861 [2021-10-28 08:57:36,853 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:36,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2021-10-28 08:57:36,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 847. [2021-10-28 08:57:36,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 846 states have (on average 1.4527186761229314) internal successors, (1229), 846 states have internal predecessors, (1229), 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) [2021-10-28 08:57:36,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1229 transitions. [2021-10-28 08:57:36,892 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1229 transitions. Word has length 141 [2021-10-28 08:57:36,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:36,892 INFO L470 AbstractCegarLoop]: Abstraction has 847 states and 1229 transitions. [2021-10-28 08:57:36,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2021-10-28 08:57:36,892 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1229 transitions. [2021-10-28 08:57:36,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-10-28 08:57:36,894 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:36,895 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:57:36,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-28 08:57:36,895 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:36,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:36,896 INFO L85 PathProgramCache]: Analyzing trace with hash 75909554, now seen corresponding path program 1 times [2021-10-28 08:57:36,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:36,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013329499] [2021-10-28 08:57:36,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:36,896 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:36,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:36,926 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-10-28 08:57:36,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:36,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013329499] [2021-10-28 08:57:36,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013329499] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:36,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:36,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:36,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860592383] [2021-10-28 08:57:36,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:36,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:36,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:36,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:36,928 INFO L87 Difference]: Start difference. First operand 847 states and 1229 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-10-28 08:57:37,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:37,076 INFO L93 Difference]: Finished difference Result 1700 states and 2468 transitions. [2021-10-28 08:57:37,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:37,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 142 [2021-10-28 08:57:37,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:37,081 INFO L225 Difference]: With dead ends: 1700 [2021-10-28 08:57:37,081 INFO L226 Difference]: Without dead ends: 845 [2021-10-28 08:57:37,082 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:37,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2021-10-28 08:57:37,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 831. [2021-10-28 08:57:37,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 830 states have (on average 1.453012048192771) internal successors, (1206), 830 states have internal predecessors, (1206), 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) [2021-10-28 08:57:37,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1206 transitions. [2021-10-28 08:57:37,140 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1206 transitions. Word has length 142 [2021-10-28 08:57:37,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:37,141 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 1206 transitions. [2021-10-28 08:57:37,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-10-28 08:57:37,141 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1206 transitions. [2021-10-28 08:57:37,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-10-28 08:57:37,143 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:37,143 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:57:37,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-28 08:57:37,144 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:37,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:37,144 INFO L85 PathProgramCache]: Analyzing trace with hash -2072592764, now seen corresponding path program 1 times [2021-10-28 08:57:37,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:37,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898985790] [2021-10-28 08:57:37,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:37,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:37,173 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-10-28 08:57:37,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:37,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898985790] [2021-10-28 08:57:37,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898985790] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:37,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:37,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:37,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934378907] [2021-10-28 08:57:37,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:37,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:37,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:37,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:37,175 INFO L87 Difference]: Start difference. First operand 831 states and 1206 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2021-10-28 08:57:37,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:37,311 INFO L93 Difference]: Finished difference Result 1666 states and 2418 transitions. [2021-10-28 08:57:37,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:37,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 146 [2021-10-28 08:57:37,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:37,317 INFO L225 Difference]: With dead ends: 1666 [2021-10-28 08:57:37,317 INFO L226 Difference]: Without dead ends: 843 [2021-10-28 08:57:37,318 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:37,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2021-10-28 08:57:37,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 831. [2021-10-28 08:57:37,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 830 states have (on average 1.4445783132530121) internal successors, (1199), 830 states have internal predecessors, (1199), 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) [2021-10-28 08:57:37,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1199 transitions. [2021-10-28 08:57:37,356 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1199 transitions. Word has length 146 [2021-10-28 08:57:37,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:37,356 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 1199 transitions. [2021-10-28 08:57:37,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2021-10-28 08:57:37,357 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1199 transitions. [2021-10-28 08:57:37,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-10-28 08:57:37,359 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:37,359 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-28 08:57:37,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-28 08:57:37,359 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:37,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:37,360 INFO L85 PathProgramCache]: Analyzing trace with hash 369501830, now seen corresponding path program 1 times [2021-10-28 08:57:37,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:37,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495111205] [2021-10-28 08:57:37,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:37,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:37,391 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-10-28 08:57:37,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:37,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495111205] [2021-10-28 08:57:37,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495111205] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:37,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:37,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:37,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444749788] [2021-10-28 08:57:37,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:37,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:37,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:37,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:37,393 INFO L87 Difference]: Start difference. First operand 831 states and 1199 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2021-10-28 08:57:37,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:37,532 INFO L93 Difference]: Finished difference Result 1666 states and 2404 transitions. [2021-10-28 08:57:37,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:37,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 147 [2021-10-28 08:57:37,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:37,537 INFO L225 Difference]: With dead ends: 1666 [2021-10-28 08:57:37,537 INFO L226 Difference]: Without dead ends: 826 [2021-10-28 08:57:37,538 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:37,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2021-10-28 08:57:37,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 814. [2021-10-28 08:57:37,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 813 states have (on average 1.4391143911439115) internal successors, (1170), 813 states have internal predecessors, (1170), 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) [2021-10-28 08:57:37,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1170 transitions. [2021-10-28 08:57:37,596 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1170 transitions. Word has length 147 [2021-10-28 08:57:37,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:37,596 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 1170 transitions. [2021-10-28 08:57:37,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2021-10-28 08:57:37,596 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1170 transitions. [2021-10-28 08:57:37,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-10-28 08:57:37,599 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:37,599 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1] [2021-10-28 08:57:37,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-10-28 08:57:37,599 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:37,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:37,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1770310156, now seen corresponding path program 1 times [2021-10-28 08:57:37,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:37,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046574625] [2021-10-28 08:57:37,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:37,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:37,641 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-10-28 08:57:37,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:37,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046574625] [2021-10-28 08:57:37,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046574625] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:37,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:37,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:37,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419571254] [2021-10-28 08:57:37,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:37,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:37,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:37,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:37,644 INFO L87 Difference]: Start difference. First operand 814 states and 1170 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2021-10-28 08:57:37,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:37,719 INFO L93 Difference]: Finished difference Result 2412 states and 3460 transitions. [2021-10-28 08:57:37,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:37,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 154 [2021-10-28 08:57:37,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:37,728 INFO L225 Difference]: With dead ends: 2412 [2021-10-28 08:57:37,729 INFO L226 Difference]: Without dead ends: 1606 [2021-10-28 08:57:37,730 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:37,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2021-10-28 08:57:37,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 816. [2021-10-28 08:57:37,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 815 states have (on average 1.4380368098159508) internal successors, (1172), 815 states have internal predecessors, (1172), 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) [2021-10-28 08:57:37,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1172 transitions. [2021-10-28 08:57:37,781 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1172 transitions. Word has length 154 [2021-10-28 08:57:37,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:37,781 INFO L470 AbstractCegarLoop]: Abstraction has 816 states and 1172 transitions. [2021-10-28 08:57:37,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2021-10-28 08:57:37,781 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1172 transitions. [2021-10-28 08:57:37,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-10-28 08:57:37,783 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:37,783 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1] [2021-10-28 08:57:37,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-10-28 08:57:37,784 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:37,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:37,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1570716982, now seen corresponding path program 1 times [2021-10-28 08:57:37,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:37,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564393143] [2021-10-28 08:57:37,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:37,785 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:37,829 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-10-28 08:57:37,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:37,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564393143] [2021-10-28 08:57:37,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564393143] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:37,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:37,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:37,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102529900] [2021-10-28 08:57:37,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:37,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:37,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:37,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:37,831 INFO L87 Difference]: Start difference. First operand 816 states and 1172 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2021-10-28 08:57:37,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:37,934 INFO L93 Difference]: Finished difference Result 2411 states and 3456 transitions. [2021-10-28 08:57:37,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:37,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 154 [2021-10-28 08:57:37,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:37,943 INFO L225 Difference]: With dead ends: 2411 [2021-10-28 08:57:37,943 INFO L226 Difference]: Without dead ends: 1603 [2021-10-28 08:57:37,945 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:37,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2021-10-28 08:57:38,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1601. [2021-10-28 08:57:38,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1600 states have (on average 1.4325) internal successors, (2292), 1600 states have internal predecessors, (2292), 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) [2021-10-28 08:57:38,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2292 transitions. [2021-10-28 08:57:38,033 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2292 transitions. Word has length 154 [2021-10-28 08:57:38,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:38,034 INFO L470 AbstractCegarLoop]: Abstraction has 1601 states and 2292 transitions. [2021-10-28 08:57:38,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2021-10-28 08:57:38,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2292 transitions. [2021-10-28 08:57:38,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-10-28 08:57:38,037 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:38,037 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1] [2021-10-28 08:57:38,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-10-28 08:57:38,037 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:38,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:38,038 INFO L85 PathProgramCache]: Analyzing trace with hash -362729202, now seen corresponding path program 1 times [2021-10-28 08:57:38,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:38,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104540871] [2021-10-28 08:57:38,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:38,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:38,116 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-10-28 08:57:38,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:38,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104540871] [2021-10-28 08:57:38,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104540871] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:38,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:38,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:38,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031399527] [2021-10-28 08:57:38,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:38,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:38,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:38,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:38,119 INFO L87 Difference]: Start difference. First operand 1601 states and 2292 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2021-10-28 08:57:38,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:38,315 INFO L93 Difference]: Finished difference Result 4747 states and 6780 transitions. [2021-10-28 08:57:38,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:38,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 156 [2021-10-28 08:57:38,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:38,337 INFO L225 Difference]: With dead ends: 4747 [2021-10-28 08:57:38,338 INFO L226 Difference]: Without dead ends: 3154 [2021-10-28 08:57:38,342 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:38,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3154 states. [2021-10-28 08:57:38,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3154 to 1601. [2021-10-28 08:57:38,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1600 states have (on average 1.43) internal successors, (2288), 1600 states have internal predecessors, (2288), 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) [2021-10-28 08:57:38,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2288 transitions. [2021-10-28 08:57:38,457 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2288 transitions. Word has length 156 [2021-10-28 08:57:38,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:38,458 INFO L470 AbstractCegarLoop]: Abstraction has 1601 states and 2288 transitions. [2021-10-28 08:57:38,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2021-10-28 08:57:38,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2288 transitions. [2021-10-28 08:57:38,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-10-28 08:57:38,461 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:38,462 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1] [2021-10-28 08:57:38,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-10-28 08:57:38,462 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:38,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:38,463 INFO L85 PathProgramCache]: Analyzing trace with hash -957693967, now seen corresponding path program 1 times [2021-10-28 08:57:38,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:38,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891126005] [2021-10-28 08:57:38,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:38,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-10-28 08:57:38,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:38,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891126005] [2021-10-28 08:57:38,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891126005] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:38,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:38,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:57:38,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74994160] [2021-10-28 08:57:38,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:57:38,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:38,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:57:38,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:38,506 INFO L87 Difference]: Start difference. First operand 1601 states and 2288 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-10-28 08:57:38,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:38,752 INFO L93 Difference]: Finished difference Result 4783 states and 6836 transitions. [2021-10-28 08:57:38,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:57:38,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 157 [2021-10-28 08:57:38,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:38,770 INFO L225 Difference]: With dead ends: 4783 [2021-10-28 08:57:38,770 INFO L226 Difference]: Without dead ends: 3190 [2021-10-28 08:57:38,772 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:57:38,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2021-10-28 08:57:38,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 3188. [2021-10-28 08:57:38,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3188 states, 3187 states have (on average 1.4032005020395357) internal successors, (4472), 3187 states have internal predecessors, (4472), 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) [2021-10-28 08:57:39,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3188 states to 3188 states and 4472 transitions. [2021-10-28 08:57:39,005 INFO L78 Accepts]: Start accepts. Automaton has 3188 states and 4472 transitions. Word has length 157 [2021-10-28 08:57:39,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:39,006 INFO L470 AbstractCegarLoop]: Abstraction has 3188 states and 4472 transitions. [2021-10-28 08:57:39,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-10-28 08:57:39,006 INFO L276 IsEmpty]: Start isEmpty. Operand 3188 states and 4472 transitions. [2021-10-28 08:57:39,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-10-28 08:57:39,010 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:39,010 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1] [2021-10-28 08:57:39,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-10-28 08:57:39,011 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:57:39,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:39,011 INFO L85 PathProgramCache]: Analyzing trace with hash -3753809, now seen corresponding path program 1 times [2021-10-28 08:57:39,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:39,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919931167] [2021-10-28 08:57:39,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:39,012 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:57:39,055 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:57:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:57:39,195 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:57:39,195 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 08:57:39,196 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:57:39,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-10-28 08:57:39,201 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:57:39,205 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:57:39,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:57:39 BoogieIcfgContainer [2021-10-28 08:57:39,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:57:39,359 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:57:39,359 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:57:39,359 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:57:39,360 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:57:29" (3/4) ... [2021-10-28 08:57:39,361 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 08:57:39,494 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20d05092-0c77-4fa2-958d-a1f4545c389a/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:57:39,494 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:57:39,496 INFO L168 Benchmark]: Toolchain (without parser) took 10892.54 ms. Allocated memory was 119.5 MB in the beginning and 239.1 MB in the end (delta: 119.5 MB). Free memory was 87.9 MB in the beginning and 126.9 MB in the end (delta: -39.0 MB). Peak memory consumption was 80.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:57:39,496 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 81.8 MB. Free memory is still 40.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:57:39,497 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.50 ms. Allocated memory is still 119.5 MB. Free memory was 87.9 MB in the beginning and 91.4 MB in the end (delta: -3.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:57:39,497 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.41 ms. Allocated memory is still 119.5 MB. Free memory was 91.4 MB in the beginning and 88.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:57:39,497 INFO L168 Benchmark]: Boogie Preprocessor took 42.09 ms. Allocated memory is still 119.5 MB. Free memory was 88.7 MB in the beginning and 86.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:57:39,498 INFO L168 Benchmark]: RCFGBuilder took 882.21 ms. Allocated memory is still 119.5 MB. Free memory was 86.6 MB in the beginning and 54.5 MB in the end (delta: 32.1 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:57:39,502 INFO L168 Benchmark]: TraceAbstraction took 9382.13 ms. Allocated memory was 119.5 MB in the beginning and 239.1 MB in the end (delta: 119.5 MB). Free memory was 53.7 MB in the beginning and 144.7 MB in the end (delta: -91.0 MB). Peak memory consumption was 30.2 MB. Max. memory is 16.1 GB. [2021-10-28 08:57:39,503 INFO L168 Benchmark]: Witness Printer took 135.12 ms. Allocated memory is still 239.1 MB. Free memory was 144.7 MB in the beginning and 126.9 MB in the end (delta: 17.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-28 08:57:39,505 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 81.8 MB. Free memory is still 40.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 377.50 ms. Allocated memory is still 119.5 MB. Free memory was 87.9 MB in the beginning and 91.4 MB in the end (delta: -3.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.41 ms. Allocated memory is still 119.5 MB. Free memory was 91.4 MB in the beginning and 88.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.09 ms. Allocated memory is still 119.5 MB. Free memory was 88.7 MB in the beginning and 86.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 882.21 ms. Allocated memory is still 119.5 MB. Free memory was 86.6 MB in the beginning and 54.5 MB in the end (delta: 32.1 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9382.13 ms. Allocated memory was 119.5 MB in the beginning and 239.1 MB in the end (delta: 119.5 MB). Free memory was 53.7 MB in the beginning and 144.7 MB in the end (delta: -91.0 MB). Peak memory consumption was 30.2 MB. Max. memory is 16.1 GB. * Witness Printer took 135.12 ms. Allocated memory is still 239.1 MB. Free memory was 144.7 MB in the beginning and 126.9 MB in the end (delta: 17.8 MB). Peak memory consumption was 16.8 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 709]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L714] int s ; [L715] int tmp ; [L719] s = 8464 [L24] int s__info_callback = __VERIFIER_nondet_int() ; [L25] int s__in_handshake = __VERIFIER_nondet_int() ; [L26] int s__state ; [L27] int s__new_session ; [L28] int s__server ; [L29] int s__version = __VERIFIER_nondet_int() ; [L30] int s__type ; [L31] int s__init_num ; [L32] int s__hit = __VERIFIER_nondet_int() ; [L33] int s__rwstate ; [L34] int s__init_buf___0 = 1; [L35] int s__debug = __VERIFIER_nondet_int() ; [L36] int s__shutdown ; [L37] int s__cert = __VERIFIER_nondet_int() ; [L38] int s__options = __VERIFIER_nondet_int() ; [L39] int s__verify_mode = __VERIFIER_nondet_int() ; [L40] int s__session__peer = __VERIFIER_nondet_int() ; [L41] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L42] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L43] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L44] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L45] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L46] int s__s3__tmp__cert_request ; [L47] int s__s3__tmp__reuse_message ; [L48] int s__s3__tmp__use_rsa_tmp ; [L49] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L50] int s__s3__tmp__new_cipher__algorithms ; [L51] int s__s3__tmp__next_state___0 ; [L52] int s__s3__tmp__new_cipher__algo_strength ; [L53] int s__session__cipher ; [L54] int buf ; [L55] unsigned long l ; [L56] unsigned long Time ; [L57] unsigned long tmp ; [L58] int cb ; [L59] long num1 = __VERIFIER_nondet_long() ; [L60] int ret ; [L61] int new_state ; [L62] int state ; [L63] int skip ; [L64] int got_new_session ; [L65] int tmp___1 = __VERIFIER_nondet_int() ; [L66] int tmp___2 = __VERIFIER_nondet_int() ; [L67] int tmp___3 = __VERIFIER_nondet_int() ; [L68] int tmp___4 = __VERIFIER_nondet_int() ; [L69] int tmp___5 = __VERIFIER_nondet_int() ; [L70] int tmp___6 = __VERIFIER_nondet_int() ; [L71] int tmp___7 ; [L72] long tmp___8 = __VERIFIER_nondet_long() ; [L73] int tmp___9 = __VERIFIER_nondet_int() ; [L74] int tmp___10 = __VERIFIER_nondet_int() ; [L75] int blastFlag ; [L76] int __cil_tmp55 ; [L77] unsigned long __cil_tmp56 ; [L78] unsigned long __cil_tmp57 ; [L79] unsigned long __cil_tmp58 ; [L80] unsigned long __cil_tmp59 ; [L81] int __cil_tmp60 ; [L82] unsigned long __cil_tmp61 = __VERIFIER_nondet_ulong() ; [L86] s__state = initial_state [L87] blastFlag = 0 [L88] tmp = __VERIFIER_nondet_int() [L89] Time = tmp [L90] cb = 0 [L91] ret = -1 [L92] skip = 0 [L93] got_new_session = 0 [L94] COND TRUE s__info_callback != 0 [L95] cb = s__info_callback [L101] s__in_handshake ++ [L102] COND FALSE !(tmp___1 + 12288) [L107] COND FALSE !(s__cert == 0) [L111] COND TRUE 1 [L113] state = s__state [L114] COND FALSE !(s__state == 12292) [L117] COND FALSE !(s__state == 16384) [L120] COND FALSE !(s__state == 8192) [L123] COND FALSE !(s__state == 24576) [L126] COND FALSE !(s__state == 8195) [L129] COND FALSE !(s__state == 8480) [L132] COND FALSE !(s__state == 8481) [L135] COND FALSE !(s__state == 8482) [L138] COND TRUE s__state == 8464 [L284] s__shutdown = 0 [L285] ret = __VERIFIER_nondet_int() [L286] COND TRUE blastFlag == 0 [L287] blastFlag = 1 [L289] COND FALSE !(ret <= 0) [L292] got_new_session = 1 [L293] s__state = 8496 [L294] s__init_num = 0 [L663] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L664] COND FALSE !(! s__s3__tmp__reuse_message) [L698] skip = 0 [L111] COND TRUE 1 [L113] state = s__state [L114] COND FALSE !(s__state == 12292) [L117] COND FALSE !(s__state == 16384) [L120] COND FALSE !(s__state == 8192) [L123] COND FALSE !(s__state == 24576) [L126] COND FALSE !(s__state == 8195) [L129] COND FALSE !(s__state == 8480) [L132] COND FALSE !(s__state == 8481) [L135] COND FALSE !(s__state == 8482) [L138] COND FALSE !(s__state == 8464) [L141] COND FALSE !(s__state == 8465) [L144] COND FALSE !(s__state == 8466) [L147] COND TRUE s__state == 8496 [L298] ret = __VERIFIER_nondet_int() [L299] COND TRUE blastFlag == 1 [L300] blastFlag = 2 [L302] COND FALSE !(ret <= 0) [L305] COND FALSE !(\read(s__hit)) [L308] s__state = 8512 [L310] s__init_num = 0 [L663] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L664] COND FALSE !(! s__s3__tmp__reuse_message) [L698] skip = 0 [L111] COND TRUE 1 [L113] state = s__state [L114] COND FALSE !(s__state == 12292) [L117] COND FALSE !(s__state == 16384) [L120] COND FALSE !(s__state == 8192) [L123] COND FALSE !(s__state == 24576) [L126] COND FALSE !(s__state == 8195) [L129] COND FALSE !(s__state == 8480) [L132] COND FALSE !(s__state == 8481) [L135] COND FALSE !(s__state == 8482) [L138] COND FALSE !(s__state == 8464) [L141] COND FALSE !(s__state == 8465) [L144] COND FALSE !(s__state == 8466) [L147] COND FALSE !(s__state == 8496) [L150] COND FALSE !(s__state == 8497) [L153] COND TRUE s__state == 8512 [L315] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L316] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L317] COND TRUE __cil_tmp56 + 256UL [L318] __cil_tmp56 = 256345 [L319] skip = 1 [L330] s__state = 8528 [L331] s__init_num = 0 [L663] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L664] COND FALSE !(! s__s3__tmp__reuse_message) [L698] skip = 0 [L111] COND TRUE 1 [L113] state = s__state [L114] COND FALSE !(s__state == 12292) [L117] COND FALSE !(s__state == 16384) [L120] COND FALSE !(s__state == 8192) [L123] COND FALSE !(s__state == 24576) [L126] COND FALSE !(s__state == 8195) [L129] COND FALSE !(s__state == 8480) [L132] COND FALSE !(s__state == 8481) [L135] COND FALSE !(s__state == 8482) [L138] COND FALSE !(s__state == 8464) [L141] COND FALSE !(s__state == 8465) [L144] COND FALSE !(s__state == 8466) [L147] COND FALSE !(s__state == 8496) [L150] COND FALSE !(s__state == 8497) [L153] COND FALSE !(s__state == 8512) [L156] COND FALSE !(s__state == 8513) [L159] COND TRUE s__state == 8528 [L335] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L336] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L338] __cil_tmp57 = (unsigned long )s__options [L339] COND TRUE __cil_tmp57 + 2097152UL [L340] s__s3__tmp__use_rsa_tmp = 1 [L345] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L373] ret = __VERIFIER_nondet_int() [L374] COND FALSE !(blastFlag == 3) [L377] COND FALSE !(ret <= 0) [L394] s__state = 8544 [L395] s__init_num = 0 [L663] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L664] COND FALSE !(! s__s3__tmp__reuse_message) [L698] skip = 0 [L111] COND TRUE 1 [L113] state = s__state [L114] COND FALSE !(s__state == 12292) [L117] COND FALSE !(s__state == 16384) [L120] COND FALSE !(s__state == 8192) [L123] COND FALSE !(s__state == 24576) [L126] COND FALSE !(s__state == 8195) [L129] COND FALSE !(s__state == 8480) [L132] COND FALSE !(s__state == 8481) [L135] COND FALSE !(s__state == 8482) [L138] COND FALSE !(s__state == 8464) [L141] COND FALSE !(s__state == 8465) [L144] COND FALSE !(s__state == 8466) [L147] COND FALSE !(s__state == 8496) [L150] COND FALSE !(s__state == 8497) [L153] COND FALSE !(s__state == 8512) [L156] COND FALSE !(s__state == 8513) [L159] COND FALSE !(s__state == 8528) [L162] COND FALSE !(s__state == 8529) [L165] COND TRUE s__state == 8544 [L399] COND TRUE s__verify_mode + 1 [L400] COND TRUE s__session__peer != 0 [L401] COND TRUE s__verify_mode + 4 [L402] s__verify_mode = 123 [L403] skip = 1 [L404] s__s3__tmp__cert_request = 0 [L405] s__state = 8560 [L663] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L664] COND FALSE !(! s__s3__tmp__reuse_message) [L698] skip = 0 [L111] COND TRUE 1 [L113] state = s__state [L114] COND FALSE !(s__state == 12292) [L117] COND FALSE !(s__state == 16384) [L120] COND FALSE !(s__state == 8192) [L123] COND FALSE !(s__state == 24576) [L126] COND FALSE !(s__state == 8195) [L129] COND FALSE !(s__state == 8480) [L132] COND FALSE !(s__state == 8481) [L135] COND FALSE !(s__state == 8482) [L138] COND FALSE !(s__state == 8464) [L141] COND FALSE !(s__state == 8465) [L144] COND FALSE !(s__state == 8466) [L147] COND FALSE !(s__state == 8496) [L150] COND FALSE !(s__state == 8497) [L153] COND FALSE !(s__state == 8512) [L156] COND FALSE !(s__state == 8513) [L159] COND FALSE !(s__state == 8528) [L162] COND FALSE !(s__state == 8529) [L165] COND FALSE !(s__state == 8544) [L168] COND FALSE !(s__state == 8545) [L171] COND TRUE s__state == 8560 [L449] ret = __VERIFIER_nondet_int() [L450] COND FALSE !(ret <= 0) [L453] s__s3__tmp__next_state___0 = 8576 [L454] s__state = 8448 [L455] s__init_num = 0 [L663] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L664] COND TRUE ! s__s3__tmp__reuse_message [L665] COND TRUE ! skip [L666] COND TRUE state == 8560 [L667] COND TRUE s__state == 8448 [L668] COND TRUE s__verify_mode != -1 [L669] COND TRUE s__verify_mode != -2 [L670] COND TRUE __cil_tmp61 != 9021 [L671] COND TRUE __cil_tmp58 != 4294967294 [L672] COND TRUE blastFlag != 4 [L673] COND TRUE tmp___7 != 1024 [L709] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 167 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.1s, OverallIterations: 35, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 7183 SDtfs, 6874 SDslu, 1823 SDs, 0 SdLazy, 2872 SolverSat, 1350 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3188occurred in iteration=34, InterpolantAutomatonStates: 104, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 34 MinimizatonAttempts, 2673 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 3216 NumberOfCodeBlocks, 3216 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 3025 ConstructedInterpolants, 0 QuantifiedInterpolants, 5479 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 34 InterpolantComputations, 34 PerfectInterpolantSequences, 2752/2752 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! [2021-10-28 08:57:39,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20d05092-0c77-4fa2-958d-a1f4545c389a/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...