./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be --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 7fd757c5f0ffc97130fbf2ffab3363825f5b034ba202e55120163a97ab859a7b ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:37:36,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:37:36,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:37:36,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:37:36,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:37:36,136 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:37:36,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:37:36,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:37:36,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:37:36,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:37:36,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:37:36,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:37:36,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:37:36,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:37:36,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:37:36,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:37:36,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:37:36,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:37:36,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:37:36,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:37:36,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:37:36,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:37:36,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:37:36,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:37:36,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:37:36,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:37:36,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:37:36,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:37:36,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:37:36,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:37:36,183 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:37:36,184 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:37:36,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:37:36,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:37:36,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:37:36,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:37:36,191 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:37:36,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:37:36,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:37:36,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:37:36,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:37:36,195 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:37:36,225 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:37:36,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:37:36,226 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:37:36,226 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:37:36,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:37:36,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:37:36,228 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:37:36,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:37:36,229 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:37:36,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:37:36,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:37:36,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:37:36,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:37:36,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:37:36,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:37:36,231 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:37:36,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:37:36,232 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:37:36,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:37:36,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:37:36,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:37:36,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:37:36,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:37:36,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:37:36,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:37:36,235 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:37:36,235 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:37:36,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:37:36,236 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:37:36,236 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:37:36,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:37:36,237 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:37:36,237 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_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7fd757c5f0ffc97130fbf2ffab3363825f5b034ba202e55120163a97ab859a7b [2021-10-21 19:37:36,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:37:36,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:37:36,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:37:36,582 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:37:36,583 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:37:36,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c [2021-10-21 19:37:36,665 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/data/20d4a512d/2fc1874445ce4e4eb65468ee44e03924/FLAG6014da15f [2021-10-21 19:37:37,296 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:37:37,296 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c [2021-10-21 19:37:37,310 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/data/20d4a512d/2fc1874445ce4e4eb65468ee44e03924/FLAG6014da15f [2021-10-21 19:37:37,643 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/data/20d4a512d/2fc1874445ce4e4eb65468ee44e03924 [2021-10-21 19:37:37,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:37:37,648 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:37:37,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:37:37,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:37:37,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:37:37,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:37:37" (1/1) ... [2021-10-21 19:37:37,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b6f982e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:37, skipping insertion in model container [2021-10-21 19:37:37,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:37:37" (1/1) ... [2021-10-21 19:37:37,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:37:37,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:37:38,015 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_84921f52-9c59-452a-9dd1-2f18c9a846e4/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c[37478,37491] [2021-10-21 19:37:38,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:37:38,040 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:37:38,098 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_84921f52-9c59-452a-9dd1-2f18c9a846e4/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c[37478,37491] [2021-10-21 19:37:38,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:37:38,117 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:37:38,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:38 WrapperNode [2021-10-21 19:37:38,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:37:38,119 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:37:38,120 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:37:38,120 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:37:38,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:38" (1/1) ... [2021-10-21 19:37:38,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:38" (1/1) ... [2021-10-21 19:37:38,184 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:37:38,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:37:38,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:37:38,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:37:38,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:38" (1/1) ... [2021-10-21 19:37:38,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:38" (1/1) ... [2021-10-21 19:37:38,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:38" (1/1) ... [2021-10-21 19:37:38,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:38" (1/1) ... [2021-10-21 19:37:38,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:38" (1/1) ... [2021-10-21 19:37:38,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:38" (1/1) ... [2021-10-21 19:37:38,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:38" (1/1) ... [2021-10-21 19:37:38,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:37:38,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:37:38,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:37:38,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:37:38,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:38" (1/1) ... [2021-10-21 19:37:38,272 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:37:38,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:37:38,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:37:38,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:37:38,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:37:38,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:37:38,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:37:38,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:37:38,554 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-21 19:37:39,215 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2021-10-21 19:37:39,220 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2021-10-21 19:37:39,231 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:37:39,234 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-21 19:37:39,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:37:39 BoogieIcfgContainer [2021-10-21 19:37:39,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:37:39,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:37:39,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:37:39,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:37:39,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:37:37" (1/3) ... [2021-10-21 19:37:39,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc4b720 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:37:39, skipping insertion in model container [2021-10-21 19:37:39,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:38" (2/3) ... [2021-10-21 19:37:39,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc4b720 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:37:39, skipping insertion in model container [2021-10-21 19:37:39,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:37:39" (3/3) ... [2021-10-21 19:37:39,256 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-1a.c [2021-10-21 19:37:39,266 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:37:39,266 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:37:39,328 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:37:39,336 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 [2021-10-21 19:37:39,336 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 19:37:39,359 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 124 states have (on average 1.7338709677419355) internal successors, (215), 125 states have internal predecessors, (215), 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) [2021-10-21 19:37:39,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-21 19:37:39,368 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:39,369 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:37:39,369 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:37:39,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:39,377 INFO L82 PathProgramCache]: Analyzing trace with hash 259999105, now seen corresponding path program 1 times [2021-10-21 19:37:39,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:39,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121407136] [2021-10-21 19:37:39,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:39,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:39,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:37:39,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:39,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121407136] [2021-10-21 19:37:39,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121407136] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:39,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:39,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:37:39,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890499835] [2021-10-21 19:37:39,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:39,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:39,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:39,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:39,826 INFO L87 Difference]: Start difference. First operand has 126 states, 124 states have (on average 1.7338709677419355) internal successors, (215), 125 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-10-21 19:37:40,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:40,089 INFO L93 Difference]: Finished difference Result 247 states and 423 transitions. [2021-10-21 19:37:40,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:37:40,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2021-10-21 19:37:40,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:40,110 INFO L225 Difference]: With dead ends: 247 [2021-10-21 19:37:40,111 INFO L226 Difference]: Without dead ends: 113 [2021-10-21 19:37:40,116 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:40,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-21 19:37:40,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-10-21 19:37:40,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.5267857142857142) internal successors, (171), 112 states have internal predecessors, (171), 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) [2021-10-21 19:37:40,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 171 transitions. [2021-10-21 19:37:40,190 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 171 transitions. Word has length 25 [2021-10-21 19:37:40,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:40,190 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 171 transitions. [2021-10-21 19:37:40,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-10-21 19:37:40,191 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 171 transitions. [2021-10-21 19:37:40,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-21 19:37:40,193 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:40,194 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:37:40,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:37:40,194 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:37:40,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:40,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1138040513, now seen corresponding path program 1 times [2021-10-21 19:37:40,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:40,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226778479] [2021-10-21 19:37:40,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:40,197 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:40,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:37:40,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:40,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226778479] [2021-10-21 19:37:40,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226778479] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:40,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:40,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:37:40,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612905425] [2021-10-21 19:37:40,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:40,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:40,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:40,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:40,316 INFO L87 Difference]: Start difference. First operand 113 states and 171 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:40,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:40,485 INFO L93 Difference]: Finished difference Result 233 states and 356 transitions. [2021-10-21 19:37:40,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:37:40,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-21 19:37:40,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:40,493 INFO L225 Difference]: With dead ends: 233 [2021-10-21 19:37:40,493 INFO L226 Difference]: Without dead ends: 131 [2021-10-21 19:37:40,496 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:40,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-21 19:37:40,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2021-10-21 19:37:40,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.5039370078740157) internal successors, (191), 127 states have internal predecessors, (191), 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) [2021-10-21 19:37:40,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 191 transitions. [2021-10-21 19:37:40,523 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 191 transitions. Word has length 37 [2021-10-21 19:37:40,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:40,524 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 191 transitions. [2021-10-21 19:37:40,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:40,526 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 191 transitions. [2021-10-21 19:37:40,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-21 19:37:40,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:40,532 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:37:40,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:37:40,533 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:37:40,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:40,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1126420040, now seen corresponding path program 1 times [2021-10-21 19:37:40,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:40,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904725026] [2021-10-21 19:37:40,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:40,538 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:40,689 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-21 19:37:40,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:40,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904725026] [2021-10-21 19:37:40,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904725026] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:40,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:40,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:37:40,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213242173] [2021-10-21 19:37:40,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:40,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:40,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:40,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:40,693 INFO L87 Difference]: Start difference. First operand 128 states and 191 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:40,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:40,715 INFO L93 Difference]: Finished difference Result 271 states and 400 transitions. [2021-10-21 19:37:40,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:37:40,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-21 19:37:40,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:40,718 INFO L225 Difference]: With dead ends: 271 [2021-10-21 19:37:40,719 INFO L226 Difference]: Without dead ends: 154 [2021-10-21 19:37:40,720 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:40,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-21 19:37:40,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-10-21 19:37:40,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.4640522875816993) internal successors, (224), 153 states have internal predecessors, (224), 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) [2021-10-21 19:37:40,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 224 transitions. [2021-10-21 19:37:40,738 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 224 transitions. Word has length 51 [2021-10-21 19:37:40,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:40,739 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 224 transitions. [2021-10-21 19:37:40,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:40,739 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 224 transitions. [2021-10-21 19:37:40,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-21 19:37:40,742 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:40,743 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:37:40,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:37:40,744 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:37:40,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:40,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1260433546, now seen corresponding path program 1 times [2021-10-21 19:37:40,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:40,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77682420] [2021-10-21 19:37:40,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:40,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:40,882 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-21 19:37:40,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:40,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77682420] [2021-10-21 19:37:40,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77682420] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:40,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:40,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:37:40,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326849404] [2021-10-21 19:37:40,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:40,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:40,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:40,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:40,886 INFO L87 Difference]: Start difference. First operand 154 states and 224 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:41,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:41,016 INFO L93 Difference]: Finished difference Result 292 states and 435 transitions. [2021-10-21 19:37:41,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:37:41,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-21 19:37:41,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:41,020 INFO L225 Difference]: With dead ends: 292 [2021-10-21 19:37:41,020 INFO L226 Difference]: Without dead ends: 175 [2021-10-21 19:37:41,021 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:41,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-10-21 19:37:41,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2021-10-21 19:37:41,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.4470588235294117) internal successors, (246), 170 states have internal predecessors, (246), 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) [2021-10-21 19:37:41,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 246 transitions. [2021-10-21 19:37:41,035 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 246 transitions. Word has length 51 [2021-10-21 19:37:41,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:41,036 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 246 transitions. [2021-10-21 19:37:41,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:41,036 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 246 transitions. [2021-10-21 19:37:41,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-21 19:37:41,038 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:41,039 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:37:41,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:37:41,039 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:37:41,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:41,040 INFO L82 PathProgramCache]: Analyzing trace with hash -457628469, now seen corresponding path program 1 times [2021-10-21 19:37:41,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:41,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459027078] [2021-10-21 19:37:41,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:41,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:41,129 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-21 19:37:41,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:41,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459027078] [2021-10-21 19:37:41,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459027078] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:41,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:41,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:37:41,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399503141] [2021-10-21 19:37:41,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:41,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:41,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:41,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:41,134 INFO L87 Difference]: Start difference. First operand 171 states and 246 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:41,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:41,175 INFO L93 Difference]: Finished difference Result 436 states and 638 transitions. [2021-10-21 19:37:41,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:37:41,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-10-21 19:37:41,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:41,197 INFO L225 Difference]: With dead ends: 436 [2021-10-21 19:37:41,212 INFO L226 Difference]: Without dead ends: 302 [2021-10-21 19:37:41,214 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:41,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-10-21 19:37:41,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2021-10-21 19:37:41,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 1.4451827242524917) internal successors, (435), 301 states have internal predecessors, (435), 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) [2021-10-21 19:37:41,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 435 transitions. [2021-10-21 19:37:41,242 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 435 transitions. Word has length 68 [2021-10-21 19:37:41,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:41,243 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 435 transitions. [2021-10-21 19:37:41,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:41,243 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 435 transitions. [2021-10-21 19:37:41,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-21 19:37:41,245 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:41,246 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:37:41,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:37:41,246 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:37:41,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:41,247 INFO L82 PathProgramCache]: Analyzing trace with hash 562572643, now seen corresponding path program 1 times [2021-10-21 19:37:41,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:41,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641227633] [2021-10-21 19:37:41,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:41,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:41,315 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-21 19:37:41,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:41,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641227633] [2021-10-21 19:37:41,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641227633] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:41,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:41,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:37:41,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356525478] [2021-10-21 19:37:41,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:41,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:41,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:41,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:41,319 INFO L87 Difference]: Start difference. First operand 302 states and 435 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2021-10-21 19:37:41,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:41,348 INFO L93 Difference]: Finished difference Result 588 states and 849 transitions. [2021-10-21 19:37:41,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:37:41,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 69 [2021-10-21 19:37:41,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:41,352 INFO L225 Difference]: With dead ends: 588 [2021-10-21 19:37:41,352 INFO L226 Difference]: Without dead ends: 323 [2021-10-21 19:37:41,353 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:41,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-21 19:37:41,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-10-21 19:37:41,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.434782608695652) internal successors, (462), 322 states have internal predecessors, (462), 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) [2021-10-21 19:37:41,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 462 transitions. [2021-10-21 19:37:41,368 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 462 transitions. Word has length 69 [2021-10-21 19:37:41,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:41,369 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 462 transitions. [2021-10-21 19:37:41,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2021-10-21 19:37:41,369 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 462 transitions. [2021-10-21 19:37:41,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-21 19:37:41,371 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:41,371 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:37:41,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:37:41,372 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:37:41,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:41,373 INFO L82 PathProgramCache]: Analyzing trace with hash 777921003, now seen corresponding path program 1 times [2021-10-21 19:37:41,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:41,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605070997] [2021-10-21 19:37:41,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:41,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:41,487 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-21 19:37:41,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:41,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605070997] [2021-10-21 19:37:41,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605070997] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:41,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:41,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:37:41,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049324169] [2021-10-21 19:37:41,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:41,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:41,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:41,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:41,495 INFO L87 Difference]: Start difference. First operand 323 states and 462 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:41,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:41,655 INFO L93 Difference]: Finished difference Result 657 states and 958 transitions. [2021-10-21 19:37:41,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:37:41,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-10-21 19:37:41,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:41,660 INFO L225 Difference]: With dead ends: 657 [2021-10-21 19:37:41,661 INFO L226 Difference]: Without dead ends: 371 [2021-10-21 19:37:41,662 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:41,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-10-21 19:37:41,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 365. [2021-10-21 19:37:41,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.4120879120879122) internal successors, (514), 364 states have internal predecessors, (514), 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) [2021-10-21 19:37:41,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 514 transitions. [2021-10-21 19:37:41,693 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 514 transitions. Word has length 86 [2021-10-21 19:37:41,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:41,695 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 514 transitions. [2021-10-21 19:37:41,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:41,695 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 514 transitions. [2021-10-21 19:37:41,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-10-21 19:37:41,697 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:41,698 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:37:41,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 19:37:41,698 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:37:41,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:41,699 INFO L82 PathProgramCache]: Analyzing trace with hash -97425693, now seen corresponding path program 1 times [2021-10-21 19:37:41,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:41,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116303141] [2021-10-21 19:37:41,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:41,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:41,815 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-10-21 19:37:41,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:41,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116303141] [2021-10-21 19:37:41,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116303141] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:41,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:41,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:37:41,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752559037] [2021-10-21 19:37:41,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:41,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:41,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:41,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:41,821 INFO L87 Difference]: Start difference. First operand 365 states and 514 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) [2021-10-21 19:37:41,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:41,878 INFO L93 Difference]: Finished difference Result 520 states and 737 transitions. [2021-10-21 19:37:41,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:37:41,878 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 106 [2021-10-21 19:37:41,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:41,885 INFO L225 Difference]: With dead ends: 520 [2021-10-21 19:37:41,886 INFO L226 Difference]: Without dead ends: 518 [2021-10-21 19:37:41,886 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:41,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-10-21 19:37:41,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 518. [2021-10-21 19:37:41,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 517 states have (on average 1.4216634429400388) internal successors, (735), 517 states have internal predecessors, (735), 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) [2021-10-21 19:37:41,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 735 transitions. [2021-10-21 19:37:41,916 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 735 transitions. Word has length 106 [2021-10-21 19:37:41,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:41,918 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 735 transitions. [2021-10-21 19:37:41,918 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) [2021-10-21 19:37:41,918 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 735 transitions. [2021-10-21 19:37:41,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-10-21 19:37:41,921 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:41,921 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:37:41,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 19:37:41,922 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:37:41,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:41,923 INFO L82 PathProgramCache]: Analyzing trace with hash -833396868, now seen corresponding path program 1 times [2021-10-21 19:37:41,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:41,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258450528] [2021-10-21 19:37:41,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:41,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:42,023 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-10-21 19:37:42,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:42,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258450528] [2021-10-21 19:37:42,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258450528] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:42,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:42,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:37:42,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183360550] [2021-10-21 19:37:42,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:42,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:42,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:42,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:42,030 INFO L87 Difference]: Start difference. First operand 518 states and 735 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) [2021-10-21 19:37:42,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:42,236 INFO L93 Difference]: Finished difference Result 1149 states and 1685 transitions. [2021-10-21 19:37:42,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:37:42,237 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 124 [2021-10-21 19:37:42,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:42,243 INFO L225 Difference]: With dead ends: 1149 [2021-10-21 19:37:42,243 INFO L226 Difference]: Without dead ends: 665 [2021-10-21 19:37:42,251 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:42,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2021-10-21 19:37:42,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 641. [2021-10-21 19:37:42,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 640 states have (on average 1.4578125) internal successors, (933), 640 states have internal predecessors, (933), 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) [2021-10-21 19:37:42,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 933 transitions. [2021-10-21 19:37:42,279 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 933 transitions. Word has length 124 [2021-10-21 19:37:42,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:42,279 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 933 transitions. [2021-10-21 19:37:42,280 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) [2021-10-21 19:37:42,280 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 933 transitions. [2021-10-21 19:37:42,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-10-21 19:37:42,283 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:42,284 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 7, 7, 7, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:37:42,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-21 19:37:42,285 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:37:42,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:42,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1117892099, now seen corresponding path program 1 times [2021-10-21 19:37:42,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:42,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482261152] [2021-10-21 19:37:42,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:42,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:42,381 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-10-21 19:37:42,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:42,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482261152] [2021-10-21 19:37:42,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482261152] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:42,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:42,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:37:42,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856111295] [2021-10-21 19:37:42,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:42,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:42,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:42,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:42,387 INFO L87 Difference]: Start difference. First operand 641 states and 933 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-10-21 19:37:42,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:42,567 INFO L93 Difference]: Finished difference Result 1523 states and 2284 transitions. [2021-10-21 19:37:42,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:37:42,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 150 [2021-10-21 19:37:42,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:42,575 INFO L225 Difference]: With dead ends: 1523 [2021-10-21 19:37:42,575 INFO L226 Difference]: Without dead ends: 868 [2021-10-21 19:37:42,577 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:42,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-10-21 19:37:42,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 830. [2021-10-21 19:37:42,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 829 states have (on average 1.4294330518697225) internal successors, (1185), 829 states have internal predecessors, (1185), 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) [2021-10-21 19:37:42,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1185 transitions. [2021-10-21 19:37:42,609 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1185 transitions. Word has length 150 [2021-10-21 19:37:42,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:42,609 INFO L470 AbstractCegarLoop]: Abstraction has 830 states and 1185 transitions. [2021-10-21 19:37:42,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-10-21 19:37:42,610 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1185 transitions. [2021-10-21 19:37:42,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-10-21 19:37:42,613 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:42,613 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 8, 8, 8, 8, 8, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:37:42,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-21 19:37:42,614 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:37:42,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:42,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1900103119, now seen corresponding path program 1 times [2021-10-21 19:37:42,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:42,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549311465] [2021-10-21 19:37:42,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:42,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:42,701 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-10-21 19:37:42,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:42,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549311465] [2021-10-21 19:37:42,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549311465] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:42,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:42,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:37:42,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545341777] [2021-10-21 19:37:42,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:42,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:42,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:42,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:42,707 INFO L87 Difference]: Start difference. First operand 830 states and 1185 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2021-10-21 19:37:42,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:42,902 INFO L93 Difference]: Finished difference Result 1779 states and 2561 transitions. [2021-10-21 19:37:42,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:37:42,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 171 [2021-10-21 19:37:42,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:42,910 INFO L225 Difference]: With dead ends: 1779 [2021-10-21 19:37:42,910 INFO L226 Difference]: Without dead ends: 941 [2021-10-21 19:37:42,912 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:42,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2021-10-21 19:37:42,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 905. [2021-10-21 19:37:42,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 904 states have (on average 1.4170353982300885) internal successors, (1281), 904 states have internal predecessors, (1281), 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) [2021-10-21 19:37:42,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1281 transitions. [2021-10-21 19:37:42,947 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1281 transitions. Word has length 171 [2021-10-21 19:37:42,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:42,947 INFO L470 AbstractCegarLoop]: Abstraction has 905 states and 1281 transitions. [2021-10-21 19:37:42,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2021-10-21 19:37:42,948 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1281 transitions. [2021-10-21 19:37:42,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-10-21 19:37:42,952 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:42,952 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 9, 9, 9, 9, 9, 7, 7, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:37:42,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-21 19:37:42,953 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:37:42,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:42,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1650023748, now seen corresponding path program 1 times [2021-10-21 19:37:42,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:42,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415494919] [2021-10-21 19:37:42,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:42,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:43,031 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-10-21 19:37:43,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:43,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415494919] [2021-10-21 19:37:43,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415494919] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:43,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:43,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:37:43,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962508804] [2021-10-21 19:37:43,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:43,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:43,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:43,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:43,039 INFO L87 Difference]: Start difference. First operand 905 states and 1281 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-10-21 19:37:43,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:43,233 INFO L93 Difference]: Finished difference Result 1929 states and 2750 transitions. [2021-10-21 19:37:43,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:37:43,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 195 [2021-10-21 19:37:43,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:43,244 INFO L225 Difference]: With dead ends: 1929 [2021-10-21 19:37:43,244 INFO L226 Difference]: Without dead ends: 1022 [2021-10-21 19:37:43,246 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:43,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2021-10-21 19:37:43,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 989. [2021-10-21 19:37:43,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 988 states have (on average 1.408906882591093) internal successors, (1392), 988 states have internal predecessors, (1392), 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) [2021-10-21 19:37:43,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1392 transitions. [2021-10-21 19:37:43,287 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1392 transitions. Word has length 195 [2021-10-21 19:37:43,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:43,288 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1392 transitions. [2021-10-21 19:37:43,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-10-21 19:37:43,288 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1392 transitions. [2021-10-21 19:37:43,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-10-21 19:37:43,292 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:43,293 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 9, 9, 9, 9, 9, 7, 7, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:37:43,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-21 19:37:43,293 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:37:43,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:43,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1428789822, now seen corresponding path program 1 times [2021-10-21 19:37:43,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:43,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948433986] [2021-10-21 19:37:43,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:43,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:43,374 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-10-21 19:37:43,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:43,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948433986] [2021-10-21 19:37:43,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948433986] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:43,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:43,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:37:43,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918315025] [2021-10-21 19:37:43,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:43,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:43,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:43,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:43,378 INFO L87 Difference]: Start difference. First operand 989 states and 1392 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-10-21 19:37:43,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:43,587 INFO L93 Difference]: Finished difference Result 2097 states and 2975 transitions. [2021-10-21 19:37:43,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:37:43,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 195 [2021-10-21 19:37:43,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:43,596 INFO L225 Difference]: With dead ends: 2097 [2021-10-21 19:37:43,596 INFO L226 Difference]: Without dead ends: 1118 [2021-10-21 19:37:43,598 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:43,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2021-10-21 19:37:43,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 1082. [2021-10-21 19:37:43,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 1081 states have (on average 1.4098057354301572) internal successors, (1524), 1081 states have internal predecessors, (1524), 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) [2021-10-21 19:37:43,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1524 transitions. [2021-10-21 19:37:43,641 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1524 transitions. Word has length 195 [2021-10-21 19:37:43,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:43,641 INFO L470 AbstractCegarLoop]: Abstraction has 1082 states and 1524 transitions. [2021-10-21 19:37:43,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-10-21 19:37:43,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1524 transitions. [2021-10-21 19:37:43,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-10-21 19:37:43,646 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:43,647 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 10, 10, 10, 10, 10, 8, 8, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:37:43,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-21 19:37:43,647 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:37:43,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:43,648 INFO L82 PathProgramCache]: Analyzing trace with hash -390571940, now seen corresponding path program 1 times [2021-10-21 19:37:43,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:43,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735452681] [2021-10-21 19:37:43,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:43,649 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:43,734 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2021-10-21 19:37:43,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:43,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735452681] [2021-10-21 19:37:43,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735452681] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:43,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:43,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:37:43,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482391643] [2021-10-21 19:37:43,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:43,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:43,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:43,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:43,737 INFO L87 Difference]: Start difference. First operand 1082 states and 1524 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2021-10-21 19:37:43,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:43,793 INFO L93 Difference]: Finished difference Result 3169 states and 4471 transitions. [2021-10-21 19:37:43,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:37:43,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 225 [2021-10-21 19:37:43,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:43,809 INFO L225 Difference]: With dead ends: 3169 [2021-10-21 19:37:43,809 INFO L226 Difference]: Without dead ends: 2124 [2021-10-21 19:37:43,813 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:43,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2124 states. [2021-10-21 19:37:43,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2124 to 2122. [2021-10-21 19:37:43,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 2121 states have (on average 1.4106553512494107) internal successors, (2992), 2121 states have internal predecessors, (2992), 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) [2021-10-21 19:37:43,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 2992 transitions. [2021-10-21 19:37:43,898 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 2992 transitions. Word has length 225 [2021-10-21 19:37:43,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:43,899 INFO L470 AbstractCegarLoop]: Abstraction has 2122 states and 2992 transitions. [2021-10-21 19:37:43,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2021-10-21 19:37:43,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 2992 transitions. [2021-10-21 19:37:43,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-10-21 19:37:43,906 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:43,906 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 10, 10, 10, 10, 10, 8, 8, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:37:43,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-21 19:37:43,907 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:37:43,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:43,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1606725666, now seen corresponding path program 1 times [2021-10-21 19:37:43,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:43,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954829007] [2021-10-21 19:37:43,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:43,908 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:44,017 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 338 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2021-10-21 19:37:44,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:44,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954829007] [2021-10-21 19:37:44,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954829007] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:44,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:44,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:37:44,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004972027] [2021-10-21 19:37:44,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:44,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:44,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:44,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:44,021 INFO L87 Difference]: Start difference. First operand 2122 states and 2992 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2021-10-21 19:37:44,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:44,253 INFO L93 Difference]: Finished difference Result 4513 states and 6403 transitions. [2021-10-21 19:37:44,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:37:44,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 225 [2021-10-21 19:37:44,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:44,271 INFO L225 Difference]: With dead ends: 4513 [2021-10-21 19:37:44,271 INFO L226 Difference]: Without dead ends: 2398 [2021-10-21 19:37:44,277 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:44,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2021-10-21 19:37:44,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 2332. [2021-10-21 19:37:44,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2332 states, 2331 states have (on average 1.4174174174174174) internal successors, (3304), 2331 states have internal predecessors, (3304), 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) [2021-10-21 19:37:44,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 3304 transitions. [2021-10-21 19:37:44,384 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 3304 transitions. Word has length 225 [2021-10-21 19:37:44,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:44,385 INFO L470 AbstractCegarLoop]: Abstraction has 2332 states and 3304 transitions. [2021-10-21 19:37:44,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2021-10-21 19:37:44,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 3304 transitions. [2021-10-21 19:37:44,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2021-10-21 19:37:44,393 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:44,393 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 11, 11, 11, 11, 11, 9, 9, 7, 7, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-21 19:37:44,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-21 19:37:44,394 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:37:44,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:44,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1762482343, now seen corresponding path program 1 times [2021-10-21 19:37:44,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:44,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694140555] [2021-10-21 19:37:44,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:44,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:44,507 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 383 proven. 0 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2021-10-21 19:37:44,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:44,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694140555] [2021-10-21 19:37:44,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694140555] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:44,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:44,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:37:44,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98759890] [2021-10-21 19:37:44,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:44,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:44,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:44,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:44,513 INFO L87 Difference]: Start difference. First operand 2332 states and 3304 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2021-10-21 19:37:44,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:44,759 INFO L93 Difference]: Finished difference Result 4693 states and 6637 transitions. [2021-10-21 19:37:44,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:37:44,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 260 [2021-10-21 19:37:44,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:44,778 INFO L225 Difference]: With dead ends: 4693 [2021-10-21 19:37:44,778 INFO L226 Difference]: Without dead ends: 2380 [2021-10-21 19:37:44,782 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:44,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2021-10-21 19:37:44,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 2314. [2021-10-21 19:37:44,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2314 states, 2313 states have (on average 1.4051015996541287) internal successors, (3250), 2313 states have internal predecessors, (3250), 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) [2021-10-21 19:37:44,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 3250 transitions. [2021-10-21 19:37:44,877 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 3250 transitions. Word has length 260 [2021-10-21 19:37:44,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:44,878 INFO L470 AbstractCegarLoop]: Abstraction has 2314 states and 3250 transitions. [2021-10-21 19:37:44,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2021-10-21 19:37:44,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 3250 transitions. [2021-10-21 19:37:44,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-10-21 19:37:44,887 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:44,887 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 8, 8, 7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:37:44,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-21 19:37:44,888 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:37:44,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:44,888 INFO L82 PathProgramCache]: Analyzing trace with hash 357446499, now seen corresponding path program 1 times [2021-10-21 19:37:44,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:44,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220580598] [2021-10-21 19:37:44,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:44,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:45,030 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2021-10-21 19:37:45,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:45,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220580598] [2021-10-21 19:37:45,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220580598] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:45,031 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:45,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:37:45,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308440720] [2021-10-21 19:37:45,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:45,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:45,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:45,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:45,035 INFO L87 Difference]: Start difference. First operand 2314 states and 3250 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2021-10-21 19:37:45,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:45,144 INFO L93 Difference]: Finished difference Result 6879 states and 9664 transitions. [2021-10-21 19:37:45,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:37:45,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 270 [2021-10-21 19:37:45,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:45,177 INFO L225 Difference]: With dead ends: 6879 [2021-10-21 19:37:45,177 INFO L226 Difference]: Without dead ends: 4602 [2021-10-21 19:37:45,182 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:45,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4602 states. [2021-10-21 19:37:45,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4602 to 4600. [2021-10-21 19:37:45,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4600 states, 4599 states have (on average 1.401174168297456) internal successors, (6444), 4599 states have internal predecessors, (6444), 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) [2021-10-21 19:37:45,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4600 states to 4600 states and 6444 transitions. [2021-10-21 19:37:45,428 INFO L78 Accepts]: Start accepts. Automaton has 4600 states and 6444 transitions. Word has length 270 [2021-10-21 19:37:45,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:45,429 INFO L470 AbstractCegarLoop]: Abstraction has 4600 states and 6444 transitions. [2021-10-21 19:37:45,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2021-10-21 19:37:45,429 INFO L276 IsEmpty]: Start isEmpty. Operand 4600 states and 6444 transitions. [2021-10-21 19:37:45,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-10-21 19:37:45,444 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:45,445 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 8, 8, 7, 7, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:37:45,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-21 19:37:45,445 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:37:45,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:45,446 INFO L82 PathProgramCache]: Analyzing trace with hash 259987815, now seen corresponding path program 1 times [2021-10-21 19:37:45,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:45,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288140467] [2021-10-21 19:37:45,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:45,447 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:45,541 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 273 proven. 0 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2021-10-21 19:37:45,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:45,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288140467] [2021-10-21 19:37:45,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288140467] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:45,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:45,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:37:45,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115810664] [2021-10-21 19:37:45,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:45,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:45,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:45,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:45,546 INFO L87 Difference]: Start difference. First operand 4600 states and 6444 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2021-10-21 19:37:45,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:45,839 INFO L93 Difference]: Finished difference Result 9242 states and 12935 transitions. [2021-10-21 19:37:45,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:37:45,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 270 [2021-10-21 19:37:45,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:45,873 INFO L225 Difference]: With dead ends: 9242 [2021-10-21 19:37:45,873 INFO L226 Difference]: Without dead ends: 4708 [2021-10-21 19:37:45,879 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:45,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4708 states. [2021-10-21 19:37:46,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4708 to 4600. [2021-10-21 19:37:46,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4600 states, 4599 states have (on average 1.3776908023483365) internal successors, (6336), 4599 states have internal predecessors, (6336), 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) [2021-10-21 19:37:46,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4600 states to 4600 states and 6336 transitions. [2021-10-21 19:37:46,074 INFO L78 Accepts]: Start accepts. Automaton has 4600 states and 6336 transitions. Word has length 270 [2021-10-21 19:37:46,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:46,075 INFO L470 AbstractCegarLoop]: Abstraction has 4600 states and 6336 transitions. [2021-10-21 19:37:46,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2021-10-21 19:37:46,076 INFO L276 IsEmpty]: Start isEmpty. Operand 4600 states and 6336 transitions. [2021-10-21 19:37:46,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-10-21 19:37:46,089 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:46,090 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 12, 12, 12, 10, 10, 8, 8, 7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:37:46,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-21 19:37:46,090 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:37:46,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:46,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1955386571, now seen corresponding path program 1 times [2021-10-21 19:37:46,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:46,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502777884] [2021-10-21 19:37:46,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:46,092 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:46,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1052 backedges. 451 proven. 0 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2021-10-21 19:37:46,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:46,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502777884] [2021-10-21 19:37:46,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502777884] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:46,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:46,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:37:46,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38490332] [2021-10-21 19:37:46,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:46,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:46,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:46,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:46,183 INFO L87 Difference]: Start difference. First operand 4600 states and 6336 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2021-10-21 19:37:46,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:46,488 INFO L93 Difference]: Finished difference Result 9728 states and 13289 transitions. [2021-10-21 19:37:46,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:37:46,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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 297 [2021-10-21 19:37:46,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:46,526 INFO L225 Difference]: With dead ends: 9728 [2021-10-21 19:37:46,526 INFO L226 Difference]: Without dead ends: 5194 [2021-10-21 19:37:46,534 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:46,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5194 states. [2021-10-21 19:37:46,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5194 to 4774. [2021-10-21 19:37:46,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4774 states, 4773 states have (on average 1.3764927718416091) internal successors, (6570), 4773 states have internal predecessors, (6570), 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) [2021-10-21 19:37:46,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4774 states to 4774 states and 6570 transitions. [2021-10-21 19:37:46,735 INFO L78 Accepts]: Start accepts. Automaton has 4774 states and 6570 transitions. Word has length 297 [2021-10-21 19:37:46,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:46,736 INFO L470 AbstractCegarLoop]: Abstraction has 4774 states and 6570 transitions. [2021-10-21 19:37:46,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2021-10-21 19:37:46,737 INFO L276 IsEmpty]: Start isEmpty. Operand 4774 states and 6570 transitions. [2021-10-21 19:37:46,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-10-21 19:37:46,749 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:46,750 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 12, 12, 12, 10, 10, 8, 8, 7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:37:46,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-21 19:37:46,751 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:37:46,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:46,751 INFO L82 PathProgramCache]: Analyzing trace with hash -950226577, now seen corresponding path program 1 times [2021-10-21 19:37:46,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:46,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490044546] [2021-10-21 19:37:46,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:46,752 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:46,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1052 backedges. 451 proven. 0 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2021-10-21 19:37:46,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:46,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490044546] [2021-10-21 19:37:46,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490044546] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:46,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:46,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:37:46,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871977701] [2021-10-21 19:37:46,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:46,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:46,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:46,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:46,838 INFO L87 Difference]: Start difference. First operand 4774 states and 6570 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2021-10-21 19:37:47,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:47,109 INFO L93 Difference]: Finished difference Result 9806 states and 13379 transitions. [2021-10-21 19:37:47,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:37:47,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 298 [2021-10-21 19:37:47,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:47,124 INFO L225 Difference]: With dead ends: 9806 [2021-10-21 19:37:47,124 INFO L226 Difference]: Without dead ends: 4594 [2021-10-21 19:37:47,131 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:47,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4594 states. [2021-10-21 19:37:47,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4594 to 4576. [2021-10-21 19:37:47,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4576 states, 4575 states have (on average 1.3718032786885246) internal successors, (6276), 4575 states have internal predecessors, (6276), 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) [2021-10-21 19:37:47,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 6276 transitions. [2021-10-21 19:37:47,289 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 6276 transitions. Word has length 298 [2021-10-21 19:37:47,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:47,290 INFO L470 AbstractCegarLoop]: Abstraction has 4576 states and 6276 transitions. [2021-10-21 19:37:47,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2021-10-21 19:37:47,292 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 6276 transitions. [2021-10-21 19:37:47,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-10-21 19:37:47,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:47,305 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 9, 9, 8, 8, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:37:47,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-21 19:37:47,306 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:37:47,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:47,306 INFO L82 PathProgramCache]: Analyzing trace with hash 977282003, now seen corresponding path program 1 times [2021-10-21 19:37:47,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:47,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091431135] [2021-10-21 19:37:47,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:47,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:47,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 472 proven. 12 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2021-10-21 19:37:47,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:47,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091431135] [2021-10-21 19:37:47,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091431135] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:37:47,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230699144] [2021-10-21 19:37:47,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:47,407 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:37:47,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:37:47,413 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:37:47,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:37:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:47,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 19:37:47,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:37:48,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 875 trivial. 0 not checked. [2021-10-21 19:37:48,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230699144] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:48,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:37:48,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-10-21 19:37:48,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756019532] [2021-10-21 19:37:48,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:48,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:48,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:48,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:37:48,818 INFO L87 Difference]: Start difference. First operand 4576 states and 6276 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2021-10-21 19:37:48,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:48,918 INFO L93 Difference]: Finished difference Result 6867 states and 9400 transitions. [2021-10-21 19:37:48,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:37:48,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 308 [2021-10-21 19:37:48,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:48,933 INFO L225 Difference]: With dead ends: 6867 [2021-10-21 19:37:48,933 INFO L226 Difference]: Without dead ends: 4578 [2021-10-21 19:37:48,938 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.1ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:37:48,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4578 states. [2021-10-21 19:37:49,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4578 to 4564. [2021-10-21 19:37:49,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4564 states, 4563 states have (on average 1.3675213675213675) internal successors, (6240), 4563 states have internal predecessors, (6240), 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) [2021-10-21 19:37:49,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 6240 transitions. [2021-10-21 19:37:49,090 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 6240 transitions. Word has length 308 [2021-10-21 19:37:49,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:49,091 INFO L470 AbstractCegarLoop]: Abstraction has 4564 states and 6240 transitions. [2021-10-21 19:37:49,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2021-10-21 19:37:49,092 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 6240 transitions. [2021-10-21 19:37:49,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-10-21 19:37:49,106 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:49,106 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 9, 9, 8, 8, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:37:49,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:37:49,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:37:49,321 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:37:49,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:49,322 INFO L82 PathProgramCache]: Analyzing trace with hash -828156331, now seen corresponding path program 1 times [2021-10-21 19:37:49,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:49,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832906617] [2021-10-21 19:37:49,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:49,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:49,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 472 proven. 12 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2021-10-21 19:37:49,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:49,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832906617] [2021-10-21 19:37:49,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832906617] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:37:49,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115872641] [2021-10-21 19:37:49,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:49,452 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:37:49,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:37:49,455 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:37:49,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 19:37:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:49,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 19:37:49,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:37:50,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 472 proven. 12 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2021-10-21 19:37:50,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115872641] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:37:50,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:37:50,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-21 19:37:50,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636015922] [2021-10-21 19:37:50,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:37:50,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:50,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:37:50,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:37:50,808 INFO L87 Difference]: Start difference. First operand 4564 states and 6240 transitions. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2021-10-21 19:37:51,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:51,201 INFO L93 Difference]: Finished difference Result 8076 states and 11149 transitions. [2021-10-21 19:37:51,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:37:51,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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 308 [2021-10-21 19:37:51,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:51,217 INFO L225 Difference]: With dead ends: 8076 [2021-10-21 19:37:51,218 INFO L226 Difference]: Without dead ends: 5679 [2021-10-21 19:37:51,252 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:37:51,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5679 states. [2021-10-21 19:37:51,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5679 to 4758. [2021-10-21 19:37:51,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4758 states, 4757 states have (on average 1.3727138953121716) internal successors, (6530), 4757 states have internal predecessors, (6530), 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) [2021-10-21 19:37:51,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4758 states to 4758 states and 6530 transitions. [2021-10-21 19:37:51,455 INFO L78 Accepts]: Start accepts. Automaton has 4758 states and 6530 transitions. Word has length 308 [2021-10-21 19:37:51,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:51,456 INFO L470 AbstractCegarLoop]: Abstraction has 4758 states and 6530 transitions. [2021-10-21 19:37:51,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2021-10-21 19:37:51,457 INFO L276 IsEmpty]: Start isEmpty. Operand 4758 states and 6530 transitions. [2021-10-21 19:37:51,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-10-21 19:37:51,472 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:51,473 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 9, 9, 8, 8, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:37:51,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:37:51,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-21 19:37:51,689 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:37:51,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:51,690 INFO L82 PathProgramCache]: Analyzing trace with hash 105807153, now seen corresponding path program 1 times [2021-10-21 19:37:51,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:51,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638119627] [2021-10-21 19:37:51,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:51,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:51,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 472 proven. 12 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2021-10-21 19:37:51,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:51,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638119627] [2021-10-21 19:37:51,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638119627] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:37:51,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815907048] [2021-10-21 19:37:51,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:51,823 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:37:51,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:37:51,825 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:37:51,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 19:37:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:52,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 19:37:52,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:37:52,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 472 proven. 12 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2021-10-21 19:37:52,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815907048] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:37:52,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:37:52,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-21 19:37:52,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875595603] [2021-10-21 19:37:52,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:37:52,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:52,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:37:52,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:37:52,979 INFO L87 Difference]: Start difference. First operand 4758 states and 6530 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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) [2021-10-21 19:37:53,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:53,242 INFO L93 Difference]: Finished difference Result 6043 states and 8330 transitions. [2021-10-21 19:37:53,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:37:53,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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 309 [2021-10-21 19:37:53,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:53,250 INFO L225 Difference]: With dead ends: 6043 [2021-10-21 19:37:53,251 INFO L226 Difference]: Without dead ends: 2460 [2021-10-21 19:37:53,256 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:37:53,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-10-21 19:37:53,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2460. [2021-10-21 19:37:53,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2460 states, 2459 states have (on average 1.3782025213501423) internal successors, (3389), 2459 states have internal predecessors, (3389), 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) [2021-10-21 19:37:53,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 3389 transitions. [2021-10-21 19:37:53,370 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 3389 transitions. Word has length 309 [2021-10-21 19:37:53,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:53,370 INFO L470 AbstractCegarLoop]: Abstraction has 2460 states and 3389 transitions. [2021-10-21 19:37:53,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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) [2021-10-21 19:37:53,371 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 3389 transitions. [2021-10-21 19:37:53,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2021-10-21 19:37:53,377 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:53,378 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 13, 13, 13, 13, 13, 11, 11, 9, 9, 8, 8, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:37:53,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:37:53,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:37:53,593 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:37:53,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:53,594 INFO L82 PathProgramCache]: Analyzing trace with hash 2136036892, now seen corresponding path program 1 times [2021-10-21 19:37:53,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:53,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852605060] [2021-10-21 19:37:53,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:53,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:53,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1255 backedges. 649 proven. 5 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2021-10-21 19:37:53,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:53,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852605060] [2021-10-21 19:37:53,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852605060] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:37:53,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59894861] [2021-10-21 19:37:53,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:53,711 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:37:53,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:37:53,713 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:37:53,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 19:37:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:54,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 19:37:54,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:37:55,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1255 backedges. 649 proven. 5 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2021-10-21 19:37:55,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59894861] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:37:55,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:37:55,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-21 19:37:55,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100511091] [2021-10-21 19:37:55,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:37:55,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:55,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:37:55,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:37:55,284 INFO L87 Difference]: Start difference. First operand 2460 states and 3389 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 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) [2021-10-21 19:37:55,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:55,546 INFO L93 Difference]: Finished difference Result 3515 states and 4790 transitions. [2021-10-21 19:37:55,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:37:55,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 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 334 [2021-10-21 19:37:55,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:55,548 INFO L225 Difference]: With dead ends: 3515 [2021-10-21 19:37:55,548 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 19:37:55,552 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:37:55,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 19:37:55,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 19:37:55,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-21 19:37:55,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:37:55,553 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 334 [2021-10-21 19:37:55,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:55,553 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:37:55,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 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) [2021-10-21 19:37:55,554 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:37:55,554 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 19:37:55,557 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:37:55,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:37:55,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:37:55,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 19:37:55,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:37:55,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:37:55,815 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:37:55,836 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:37:55,873 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:37:55,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:37:55,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:37:55,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:37:55,904 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:37:55,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:37:55,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:37:55,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:37:55,950 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:37:55,971 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:37:56,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:37:56,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:37:56,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:37:56,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:37:56,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:37:56,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:37:56,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:37:56,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:37:56,197 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:37:57,112 INFO L857 garLoopResultBuilder]: For program point L465(lines 465 471) no Hoare annotation was computed. [2021-10-21 19:37:57,112 INFO L860 garLoopResultBuilder]: At program point L201(lines 200 541) the Hoare annotation is: true [2021-10-21 19:37:57,113 INFO L853 garLoopResultBuilder]: At program point L135(lines 131 564) the Hoare annotation is: (and (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0) (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4432)) [2021-10-21 19:37:57,113 INFO L857 garLoopResultBuilder]: For program point L102(line 102) no Hoare annotation was computed. [2021-10-21 19:37:57,113 INFO L857 garLoopResultBuilder]: For program point L235(lines 235 240) no Hoare annotation was computed. [2021-10-21 19:37:57,113 INFO L860 garLoopResultBuilder]: At program point L632(lines 624 634) the Hoare annotation is: true [2021-10-21 19:37:57,113 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 306) no Hoare annotation was computed. [2021-10-21 19:37:57,113 INFO L857 garLoopResultBuilder]: For program point L302-2(lines 302 306) no Hoare annotation was computed. [2021-10-21 19:37:57,113 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 551) no Hoare annotation was computed. [2021-10-21 19:37:57,114 INFO L857 garLoopResultBuilder]: For program point L137(lines 137 562) no Hoare annotation was computed. [2021-10-21 19:37:57,114 INFO L857 garLoopResultBuilder]: For program point L104(lines 104 573) no Hoare annotation was computed. [2021-10-21 19:37:57,114 INFO L857 garLoopResultBuilder]: For program point L435(lines 435 439) no Hoare annotation was computed. [2021-10-21 19:37:57,114 INFO L857 garLoopResultBuilder]: For program point L435-2(lines 205 537) no Hoare annotation was computed. [2021-10-21 19:37:57,114 INFO L860 garLoopResultBuilder]: At program point L204(lines 203 540) the Hoare annotation is: true [2021-10-21 19:37:57,114 INFO L853 garLoopResultBuilder]: At program point L171(lines 167 552) the Hoare annotation is: (and (<= ULTIMATE.start_ssl3_connect_~s__state~0 4512) (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0) (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) [2021-10-21 19:37:57,114 INFO L853 garLoopResultBuilder]: At program point L105(lines 104 573) the Hoare annotation is: (let ((.cse0 (= 12292 ULTIMATE.start_ssl3_connect_~s__state~0))) (or (and (= ULTIMATE.start_ssl3_connect_~blastFlag~0 0) .cse0) (and .cse0 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2)))) [2021-10-21 19:37:57,115 INFO L857 garLoopResultBuilder]: For program point L370(lines 370 374) no Hoare annotation was computed. [2021-10-21 19:37:57,115 INFO L857 garLoopResultBuilder]: For program point L404(lines 404 409) no Hoare annotation was computed. [2021-10-21 19:37:57,115 INFO L857 garLoopResultBuilder]: For program point L404-2(lines 404 409) no Hoare annotation was computed. [2021-10-21 19:37:57,115 INFO L857 garLoopResultBuilder]: For program point L173(lines 173 550) no Hoare annotation was computed. [2021-10-21 19:37:57,115 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 561) no Hoare annotation was computed. [2021-10-21 19:37:57,115 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 572) no Hoare annotation was computed. [2021-10-21 19:37:57,115 INFO L853 garLoopResultBuilder]: At program point L141(lines 137 562) the Hoare annotation is: (and (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4432) (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) [2021-10-21 19:37:57,116 INFO L853 garLoopResultBuilder]: At program point L538(lines 101 604) the Hoare annotation is: (let ((.cse0 (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse1 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4352)) (.cse4 (<= 4560 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0)) (.cse5 (<= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 4560)) (.cse2 (= ULTIMATE.start_ssl3_connect_~s__hit~0 0)) (.cse3 (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4))) (or (and (= ULTIMATE.start_ssl3_connect_~s__state~0 4384) (= ULTIMATE.start_ssl3_connect_~blastFlag~0 1)) (and .cse0 .cse1 (not .cse2) (<= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 3) .cse3) (and .cse0 .cse1 .cse4 .cse5 .cse2 .cse3) (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2) (and (= ULTIMATE.start_ssl3_connect_~blastFlag~0 0) (= ULTIMATE.start_ssl3_connect_~s__state~0 4368)) (and (<= ULTIMATE.start_ssl3_connect_~s__state~0 4560) (<= 4560 ULTIMATE.start_ssl3_connect_~s__state~0) .cse4 .cse5 .cse2 .cse3) (and (= ULTIMATE.start_ssl3_connect_~s__state~0 4416) .cse3) (and (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0) .cse3 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4528)) (<= ULTIMATE.start_ssl3_connect_~s__state~0 3))) [2021-10-21 19:37:57,116 INFO L857 garLoopResultBuilder]: For program point L76(lines 76 84) no Hoare annotation was computed. [2021-10-21 19:37:57,116 INFO L860 garLoopResultBuilder]: At program point L605(lines 100 606) the Hoare annotation is: true [2021-10-21 19:37:57,116 INFO L857 garLoopResultBuilder]: For program point L176(lines 176 549) no Hoare annotation was computed. [2021-10-21 19:37:57,116 INFO L857 garLoopResultBuilder]: For program point L143(lines 143 560) no Hoare annotation was computed. [2021-10-21 19:37:57,116 INFO L857 garLoopResultBuilder]: For program point L110(lines 110 571) no Hoare annotation was computed. [2021-10-21 19:37:57,117 INFO L857 garLoopResultBuilder]: For program point L375(lines 375 379) no Hoare annotation was computed. [2021-10-21 19:37:57,117 INFO L857 garLoopResultBuilder]: For program point L375-2(lines 375 379) no Hoare annotation was computed. [2021-10-21 19:37:57,117 INFO L853 garLoopResultBuilder]: At program point L210(lines 107 572) the Hoare annotation is: (or (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2) (and (= ULTIMATE.start_ssl3_connect_~blastFlag~0 0) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4352))) [2021-10-21 19:37:57,117 INFO L853 garLoopResultBuilder]: At program point L177(lines 173 550) the Hoare annotation is: (and (<= ULTIMATE.start_ssl3_connect_~s__state~0 4512) (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0) (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) [2021-10-21 19:37:57,117 INFO L857 garLoopResultBuilder]: For program point L574(lines 574 602) no Hoare annotation was computed. [2021-10-21 19:37:57,117 INFO L857 garLoopResultBuilder]: For program point L79(lines 79 83) no Hoare annotation was computed. [2021-10-21 19:37:57,117 INFO L857 garLoopResultBuilder]: For program point L79-2(lines 76 84) no Hoare annotation was computed. [2021-10-21 19:37:57,117 INFO L857 garLoopResultBuilder]: For program point L575(lines 575 599) no Hoare annotation was computed. [2021-10-21 19:37:57,118 INFO L857 garLoopResultBuilder]: For program point L509-1(lines 205 537) no Hoare annotation was computed. [2021-10-21 19:37:57,118 INFO L857 garLoopResultBuilder]: For program point L344(lines 344 349) no Hoare annotation was computed. [2021-10-21 19:37:57,118 INFO L857 garLoopResultBuilder]: For program point L278(lines 278 282) no Hoare annotation was computed. [2021-10-21 19:37:57,118 INFO L857 garLoopResultBuilder]: For program point L311-1(lines 311 325) no Hoare annotation was computed. [2021-10-21 19:37:57,118 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 548) no Hoare annotation was computed. [2021-10-21 19:37:57,118 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 559) no Hoare annotation was computed. [2021-10-21 19:37:57,118 INFO L857 garLoopResultBuilder]: For program point L113(lines 113 570) no Hoare annotation was computed. [2021-10-21 19:37:57,118 INFO L857 garLoopResultBuilder]: For program point L609(lines 609 613) no Hoare annotation was computed. [2021-10-21 19:37:57,119 INFO L857 garLoopResultBuilder]: For program point L576(lines 576 585) no Hoare annotation was computed. [2021-10-21 19:37:57,119 INFO L857 garLoopResultBuilder]: For program point L609-2(lines 609 613) no Hoare annotation was computed. [2021-10-21 19:37:57,119 INFO L857 garLoopResultBuilder]: For program point L576-2(lines 575 597) no Hoare annotation was computed. [2021-10-21 19:37:57,119 INFO L853 garLoopResultBuilder]: At program point L147(lines 143 560) the Hoare annotation is: (and (<= ULTIMATE.start_ssl3_connect_~s__state~0 4448) (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0) (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) [2021-10-21 19:37:57,119 INFO L857 garLoopResultBuilder]: For program point L578(lines 578 582) no Hoare annotation was computed. [2021-10-21 19:37:57,119 INFO L857 garLoopResultBuilder]: For program point L446(lines 446 451) no Hoare annotation was computed. [2021-10-21 19:37:57,119 INFO L857 garLoopResultBuilder]: For program point L215(lines 215 219) no Hoare annotation was computed. [2021-10-21 19:37:57,119 INFO L857 garLoopResultBuilder]: For program point L182(lines 182 547) no Hoare annotation was computed. [2021-10-21 19:37:57,120 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 558) no Hoare annotation was computed. [2021-10-21 19:37:57,120 INFO L857 garLoopResultBuilder]: For program point L215-2(lines 205 537) no Hoare annotation was computed. [2021-10-21 19:37:57,120 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 569) no Hoare annotation was computed. [2021-10-21 19:37:57,120 INFO L857 garLoopResultBuilder]: For program point L480(lines 480 484) no Hoare annotation was computed. [2021-10-21 19:37:57,120 INFO L857 garLoopResultBuilder]: For program point L315(lines 315 319) no Hoare annotation was computed. [2021-10-21 19:37:57,120 INFO L857 garLoopResultBuilder]: For program point L315-2(lines 313 325) no Hoare annotation was computed. [2021-10-21 19:37:57,129 INFO L853 garLoopResultBuilder]: At program point L183(lines 179 548) the Hoare annotation is: (and (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0) (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4528)) [2021-10-21 19:37:57,129 INFO L857 garLoopResultBuilder]: For program point L514-1(lines 514 518) no Hoare annotation was computed. [2021-10-21 19:37:57,129 INFO L857 garLoopResultBuilder]: For program point L415(lines 415 419) no Hoare annotation was computed. [2021-10-21 19:37:57,129 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 19:37:57,130 INFO L857 garLoopResultBuilder]: For program point L251(lines 251 256) no Hoare annotation was computed. [2021-10-21 19:37:57,130 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 546) no Hoare annotation was computed. [2021-10-21 19:37:57,130 INFO L857 garLoopResultBuilder]: For program point L152(lines 152 557) no Hoare annotation was computed. [2021-10-21 19:37:57,130 INFO L857 garLoopResultBuilder]: For program point L119(lines 119 568) no Hoare annotation was computed. [2021-10-21 19:37:57,130 INFO L857 garLoopResultBuilder]: For program point L86(lines 86 94) no Hoare annotation was computed. [2021-10-21 19:37:57,131 INFO L857 garLoopResultBuilder]: For program point L86-1(lines 68 622) no Hoare annotation was computed. [2021-10-21 19:37:57,131 INFO L853 garLoopResultBuilder]: At program point L153(lines 149 558) the Hoare annotation is: (and (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4464) (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) [2021-10-21 19:37:57,131 INFO L857 garLoopResultBuilder]: For program point L87(lines 87 91) no Hoare annotation was computed. [2021-10-21 19:37:57,131 INFO L857 garLoopResultBuilder]: For program point L485(lines 485 489) no Hoare annotation was computed. [2021-10-21 19:37:57,132 INFO L857 garLoopResultBuilder]: For program point L485-2(lines 485 489) no Hoare annotation was computed. [2021-10-21 19:37:57,132 INFO L857 garLoopResultBuilder]: For program point L287(lines 287 295) no Hoare annotation was computed. [2021-10-21 19:37:57,132 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 545) no Hoare annotation was computed. [2021-10-21 19:37:57,132 INFO L857 garLoopResultBuilder]: For program point L155(lines 155 556) no Hoare annotation was computed. [2021-10-21 19:37:57,132 INFO L857 garLoopResultBuilder]: For program point L122(lines 122 567) no Hoare annotation was computed. [2021-10-21 19:37:57,132 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 391) no Hoare annotation was computed. [2021-10-21 19:37:57,133 INFO L857 garLoopResultBuilder]: For program point L354(lines 354 358) no Hoare annotation was computed. [2021-10-21 19:37:57,133 INFO L853 garLoopResultBuilder]: At program point L189(lines 185 546) the Hoare annotation is: (let ((.cse0 (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse1 (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4))) (or (and (not (= ULTIMATE.start_ssl3_connect_~s__hit~0 0)) .cse0 .cse1) (and (<= ULTIMATE.start_ssl3_connect_~s__state~0 4560) .cse0 .cse1))) [2021-10-21 19:37:57,133 INFO L853 garLoopResultBuilder]: At program point L123(lines 119 568) the Hoare annotation is: (let ((.cse0 (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse1 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4432))) (or (and .cse0 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2) .cse1) (and .cse0 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 0) .cse1))) [2021-10-21 19:37:57,134 INFO L853 garLoopResultBuilder]: At program point L355(lines 68 622) the Hoare annotation is: false [2021-10-21 19:37:57,134 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 19:37:57,134 INFO L860 garLoopResultBuilder]: At program point L620(lines 68 622) the Hoare annotation is: true [2021-10-21 19:37:57,135 INFO L857 garLoopResultBuilder]: For program point L587(lines 587 593) no Hoare annotation was computed. [2021-10-21 19:37:57,135 INFO L857 garLoopResultBuilder]: For program point L521(lines 521 525) no Hoare annotation was computed. [2021-10-21 19:37:57,136 INFO L857 garLoopResultBuilder]: For program point L521-2(lines 521 525) no Hoare annotation was computed. [2021-10-21 19:37:57,136 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 294) no Hoare annotation was computed. [2021-10-21 19:37:57,138 INFO L857 garLoopResultBuilder]: For program point L290-2(lines 205 537) no Hoare annotation was computed. [2021-10-21 19:37:57,138 INFO L857 garLoopResultBuilder]: For program point L191(lines 191 544) no Hoare annotation was computed. [2021-10-21 19:37:57,138 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 555) no Hoare annotation was computed. [2021-10-21 19:37:57,138 INFO L857 garLoopResultBuilder]: For program point L125(lines 125 566) no Hoare annotation was computed. [2021-10-21 19:37:57,139 INFO L860 garLoopResultBuilder]: At program point L621(lines 10 623) the Hoare annotation is: true [2021-10-21 19:37:57,139 INFO L857 garLoopResultBuilder]: For program point L456(lines 456 460) no Hoare annotation was computed. [2021-10-21 19:37:57,139 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 19:37:57,139 INFO L857 garLoopResultBuilder]: For program point L359(lines 359 363) no Hoare annotation was computed. [2021-10-21 19:37:57,139 INFO L857 garLoopResultBuilder]: For program point L227(lines 227 244) no Hoare annotation was computed. [2021-10-21 19:37:57,140 INFO L857 garLoopResultBuilder]: For program point L194(lines 194 543) no Hoare annotation was computed. [2021-10-21 19:37:57,140 INFO L857 garLoopResultBuilder]: For program point L161(lines 161 554) no Hoare annotation was computed. [2021-10-21 19:37:57,140 INFO L857 garLoopResultBuilder]: For program point L227-2(lines 205 537) no Hoare annotation was computed. [2021-10-21 19:37:57,140 INFO L857 garLoopResultBuilder]: For program point L128(lines 128 565) no Hoare annotation was computed. [2021-10-21 19:37:57,140 INFO L853 garLoopResultBuilder]: At program point L195(lines 191 544) the Hoare annotation is: (or (and (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0) (= ULTIMATE.start_ssl3_connect_~s__hit~0 0)) (and (<= 4560 ULTIMATE.start_ssl3_connect_~s__state~0) (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2))) [2021-10-21 19:37:57,141 INFO L853 garLoopResultBuilder]: At program point L129(lines 125 566) the Hoare annotation is: (let ((.cse0 (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse1 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4432))) (or (and .cse0 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 1) .cse1) (and .cse0 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2) .cse1))) [2021-10-21 19:37:57,141 INFO L857 garLoopResultBuilder]: For program point L493-1(lines 493 505) no Hoare annotation was computed. [2021-10-21 19:37:57,141 INFO L857 garLoopResultBuilder]: For program point L427(lines 427 431) no Hoare annotation was computed. [2021-10-21 19:37:57,141 INFO L857 garLoopResultBuilder]: For program point L229(lines 229 234) no Hoare annotation was computed. [2021-10-21 19:37:57,142 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 542) no Hoare annotation was computed. [2021-10-21 19:37:57,142 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 553) no Hoare annotation was computed. [2021-10-21 19:37:57,142 INFO L857 garLoopResultBuilder]: For program point L131(lines 131 564) no Hoare annotation was computed. [2021-10-21 19:37:57,142 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 19:37:57,142 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 616) no Hoare annotation was computed. [2021-10-21 19:37:57,143 INFO L857 garLoopResultBuilder]: For program point L528(lines 528 532) no Hoare annotation was computed. [2021-10-21 19:37:57,143 INFO L853 garLoopResultBuilder]: At program point L198(lines 197 542) the Hoare annotation is: (let ((.cse2 (= ULTIMATE.start_ssl3_connect_~s__hit~0 0)) (.cse3 (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) (.cse0 (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse1 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4352))) (or (and .cse0 .cse1 (not .cse2) (<= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 3) .cse3) (and .cse0 .cse1 (<= 4560 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0) (<= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 4560) .cse2 .cse3) (and .cse0 .cse1 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2)))) [2021-10-21 19:37:57,143 INFO L853 garLoopResultBuilder]: At program point L165(lines 155 556) the Hoare annotation is: (and (<= ULTIMATE.start_ssl3_connect_~s__state~0 4480) (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0) (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) [2021-10-21 19:37:57,143 INFO L857 garLoopResultBuilder]: For program point L496(lines 496 501) no Hoare annotation was computed. [2021-10-21 19:37:57,143 INFO L857 garLoopResultBuilder]: For program point L463(lines 463 474) no Hoare annotation was computed. [2021-10-21 19:37:57,144 INFO L857 garLoopResultBuilder]: For program point L463-1(lines 463 474) no Hoare annotation was computed. [2021-10-21 19:37:57,144 INFO L857 garLoopResultBuilder]: For program point L265(lines 265 269) no Hoare annotation was computed. [2021-10-21 19:37:57,144 INFO L857 garLoopResultBuilder]: For program point L265-2(lines 205 537) no Hoare annotation was computed. [2021-10-21 19:37:57,144 INFO L857 garLoopResultBuilder]: For program point L398(lines 398 402) no Hoare annotation was computed. [2021-10-21 19:37:57,145 INFO L857 garLoopResultBuilder]: For program point L332(lines 332 336) no Hoare annotation was computed. [2021-10-21 19:37:57,145 INFO L857 garLoopResultBuilder]: For program point L332-2(lines 205 537) no Hoare annotation was computed. [2021-10-21 19:37:57,145 INFO L857 garLoopResultBuilder]: For program point L200(lines 200 541) no Hoare annotation was computed. [2021-10-21 19:37:57,145 INFO L857 garLoopResultBuilder]: For program point L167(lines 167 552) no Hoare annotation was computed. [2021-10-21 19:37:57,145 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 563) no Hoare annotation was computed. [2021-10-21 19:37:57,145 INFO L857 garLoopResultBuilder]: For program point L101-1(lines 68 622) no Hoare annotation was computed. [2021-10-21 19:37:57,151 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:37:57,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:37:57 BoogieIcfgContainer [2021-10-21 19:37:57,200 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:37:57,200 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:37:57,201 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:37:57,201 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:37:57,202 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:37:39" (3/4) ... [2021-10-21 19:37:57,205 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:37:57,235 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-21 19:37:57,236 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 19:37:57,237 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:37:57,238 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:37:57,333 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:37:57,333 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:37:57,335 INFO L168 Benchmark]: Toolchain (without parser) took 19686.31 ms. Allocated memory was 98.6 MB in the beginning and 314.6 MB in the end (delta: 216.0 MB). Free memory was 57.7 MB in the beginning and 161.7 MB in the end (delta: -103.9 MB). Peak memory consumption was 112.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:37:57,336 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 98.6 MB. Free memory is still 74.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:37:57,336 INFO L168 Benchmark]: CACSL2BoogieTranslator took 463.11 ms. Allocated memory is still 98.6 MB. Free memory was 57.5 MB in the beginning and 69.8 MB in the end (delta: -12.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:37:57,337 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.59 ms. Allocated memory is still 98.6 MB. Free memory was 69.8 MB in the beginning and 67.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:37:57,337 INFO L168 Benchmark]: Boogie Preprocessor took 59.57 ms. Allocated memory is still 98.6 MB. Free memory was 67.1 MB in the beginning and 65.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:37:57,338 INFO L168 Benchmark]: RCFGBuilder took 993.55 ms. Allocated memory is still 98.6 MB. Free memory was 65.0 MB in the beginning and 40.7 MB in the end (delta: 24.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:37:57,338 INFO L168 Benchmark]: TraceAbstraction took 17956.91 ms. Allocated memory was 98.6 MB in the beginning and 314.6 MB in the end (delta: 216.0 MB). Free memory was 40.5 MB in the beginning and 170.0 MB in the end (delta: -129.6 MB). Peak memory consumption was 162.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:37:57,339 INFO L168 Benchmark]: Witness Printer took 132.89 ms. Allocated memory is still 314.6 MB. Free memory was 170.0 MB in the beginning and 161.7 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:37:57,342 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 98.6 MB. Free memory is still 74.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 463.11 ms. Allocated memory is still 98.6 MB. Free memory was 57.5 MB in the beginning and 69.8 MB in the end (delta: -12.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.59 ms. Allocated memory is still 98.6 MB. Free memory was 69.8 MB in the beginning and 67.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.57 ms. Allocated memory is still 98.6 MB. Free memory was 67.1 MB in the beginning and 65.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 993.55 ms. Allocated memory is still 98.6 MB. Free memory was 65.0 MB in the beginning and 40.7 MB in the end (delta: 24.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 17956.91 ms. Allocated memory was 98.6 MB in the beginning and 314.6 MB in the end (delta: 216.0 MB). Free memory was 40.5 MB in the beginning and 170.0 MB in the end (delta: -129.6 MB). Peak memory consumption was 162.3 MB. Max. memory is 16.1 GB. * Witness Printer took 132.89 ms. Allocated memory is still 314.6 MB. Free memory was 170.0 MB in the beginning and 161.7 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 616]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 126 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 17825.0ms, OverallIterations: 24, TraceHistogramMax: 15, EmptinessCheckTime: 167.1ms, AutomataDifference: 4910.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 1334.6ms, InitialAbstractionConstructionTime: 16.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4609 SDtfs, 1688 SDslu, 2649 SDs, 0 SdLazy, 2114 SolverSat, 533 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2184.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1337 GetRequests, 1305 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 107.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4774occurred in iteration=19, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1946.9ms AutomataMinimizationTime, 24 MinimizatonAttempts, 1797 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 23 LocationsWithAnnotation, 23 PreInvPairs, 211 NumberOfFragments, 332 HoareAnnotationTreeSize, 23 FomulaSimplifications, 40040 FormulaSimplificationTreeSizeReduction, 430.5ms HoareSimplificationTime, 23 FomulaSimplificationsInter, 1342 FormulaSimplificationTreeSizeReductionInter, 888.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 276.9ms SsaConstructionTime, 1113.0ms SatisfiabilityAnalysisTime, 5592.3ms InterpolantComputationTime, 5691 NumberOfCodeBlocks, 5691 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 5663 ConstructedInterpolants, 0 QuantifiedInterpolants, 8073 SizeOfPredicates, 3 NumberOfNonLiveVariables, 2495 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 28 InterpolantComputations, 21 PerfectInterpolantSequences, 17050/17120 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 104]: Loop Invariant Derived loop invariant: (blastFlag == 0 && 12292 == s__state) || (12292 == s__state && blastFlag == 2) - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 173]: Loop Invariant Derived loop invariant: (s__state <= 4512 && 4432 <= s__state) && blastFlag <= 4 - InvariantResult [Line: 185]: Loop Invariant Derived loop invariant: ((!(s__hit == 0) && 4432 <= s__state) && blastFlag <= 4) || ((s__state <= 4560 && 4432 <= s__state) && blastFlag <= 4) - InvariantResult [Line: 197]: Loop Invariant Derived loop invariant: (((((4352 <= s__state && s__state <= 4352) && !(s__hit == 0)) && s__s3__tmp__next_state___0 <= 3) && blastFlag <= 4) || (((((4352 <= s__state && s__state <= 4352) && 4560 <= s__s3__tmp__next_state___0) && s__s3__tmp__next_state___0 <= 4560) && s__hit == 0) && blastFlag <= 4)) || ((4352 <= s__state && s__state <= 4352) && blastFlag == 2) - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: (4352 <= s__state && blastFlag == 2) && s__state <= 4432 - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 119]: Loop Invariant Derived loop invariant: ((4352 <= s__state && blastFlag == 2) && s__state <= 4432) || ((4352 <= s__state && blastFlag == 0) && s__state <= 4432) - InvariantResult [Line: 191]: Loop Invariant Derived loop invariant: (4432 <= s__state && s__hit == 0) || (4560 <= s__state && blastFlag == 2) - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: (4432 <= s__state && s__state <= 4464) && blastFlag <= 4 - InvariantResult [Line: 203]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 107]: Loop Invariant Derived loop invariant: blastFlag == 2 || (blastFlag == 0 && s__state <= 4352) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 167]: Loop Invariant Derived loop invariant: (s__state <= 4512 && 4432 <= s__state) && blastFlag <= 4 - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: ((((((((s__state == 4384 && blastFlag == 1) || ((((4352 <= s__state && s__state <= 4352) && !(s__hit == 0)) && s__s3__tmp__next_state___0 <= 3) && blastFlag <= 4)) || (((((4352 <= s__state && s__state <= 4352) && 4560 <= s__s3__tmp__next_state___0) && s__s3__tmp__next_state___0 <= 4560) && s__hit == 0) && blastFlag <= 4)) || blastFlag == 2) || (blastFlag == 0 && s__state == 4368)) || (((((s__state <= 4560 && 4560 <= s__state) && 4560 <= s__s3__tmp__next_state___0) && s__s3__tmp__next_state___0 <= 4560) && s__hit == 0) && blastFlag <= 4)) || (s__state == 4416 && blastFlag <= 4)) || ((4432 <= s__state && blastFlag <= 4) && s__state <= 4528)) || s__state <= 3 - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 624]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 155]: Loop Invariant Derived loop invariant: (s__state <= 4480 && 4432 <= s__state) && blastFlag <= 4 - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: ((4352 <= s__state && blastFlag == 1) && s__state <= 4432) || ((4352 <= s__state && blastFlag == 2) && s__state <= 4432) - InvariantResult [Line: 137]: Loop Invariant Derived loop invariant: (4352 <= s__state && s__state <= 4432) && blastFlag <= 4 - InvariantResult [Line: 179]: Loop Invariant Derived loop invariant: (4432 <= s__state && blastFlag <= 4) && s__state <= 4528 - InvariantResult [Line: 200]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 143]: Loop Invariant Derived loop invariant: (s__state <= 4448 && 4432 <= s__state) && blastFlag <= 4 RESULT: Ultimate proved your program to be correct! [2021-10-21 19:37:57,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84921f52-9c59-452a-9dd1-2f18c9a846e4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...