./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64b5006-64de-48e8-9706-a4af3aa90fc4/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64b5006-64de-48e8-9706-a4af3aa90fc4/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64b5006-64de-48e8-9706-a4af3aa90fc4/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64b5006-64de-48e8-9706-a4af3aa90fc4/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64b5006-64de-48e8-9706-a4af3aa90fc4/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64b5006-64de-48e8-9706-a4af3aa90fc4/bin/utaipan-Q6hlc19bkW --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 25d1aac916acb353bef6b5512adabc0f3abdf00fe5619505211974e4efa18990 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:14:21,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:14:21,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:14:21,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:14:21,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:14:21,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:14:21,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:14:21,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:14:21,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:14:21,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:14:21,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:14:21,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:14:21,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:14:21,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:14:21,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:14:21,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:14:21,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:14:21,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:14:21,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:14:21,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:14:21,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:14:21,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:14:21,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:14:21,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:14:21,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:14:21,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:14:21,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:14:21,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:14:21,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:14:21,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:14:21,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:14:21,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:14:21,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:14:21,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:14:21,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:14:21,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:14:21,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:14:21,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:14:21,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:14:21,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:14:21,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:14:21,187 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64b5006-64de-48e8-9706-a4af3aa90fc4/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:14:21,227 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:14:21,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:14:21,229 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:14:21,229 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:14:21,230 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:14:21,230 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:14:21,230 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:14:21,231 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:14:21,231 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:14:21,231 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:14:21,232 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:14:21,232 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:14:21,233 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:14:21,233 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:14:21,233 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:14:21,233 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:14:21,234 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:14:21,234 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:14:21,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:14:21,235 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:14:21,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:14:21,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:14:21,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:14:21,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:14:21,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:14:21,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:14:21,237 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:14:21,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:14:21,238 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:14:21,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:14:21,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:14:21,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:14:21,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:14:21,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:14:21,240 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:14:21,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:14:21,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:14:21,240 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:14:21,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:14:21,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:14:21,241 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:14:21,241 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_e64b5006-64de-48e8-9706-a4af3aa90fc4/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64b5006-64de-48e8-9706-a4af3aa90fc4/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25d1aac916acb353bef6b5512adabc0f3abdf00fe5619505211974e4efa18990 [2022-11-23 15:14:21,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:14:21,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:14:21,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:14:21,610 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:14:21,611 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:14:21,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64b5006-64de-48e8-9706-a4af3aa90fc4/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/email_spec11_product22.cil.c [2022-11-23 15:14:24,663 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:14:25,077 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:14:25,077 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64b5006-64de-48e8-9706-a4af3aa90fc4/sv-benchmarks/c/product-lines/email_spec11_product22.cil.c [2022-11-23 15:14:25,112 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64b5006-64de-48e8-9706-a4af3aa90fc4/bin/utaipan-Q6hlc19bkW/data/ed9ced088/3cf628ffb52942bfa84020c33d4f6bea/FLAGa484f62b0 [2022-11-23 15:14:25,128 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64b5006-64de-48e8-9706-a4af3aa90fc4/bin/utaipan-Q6hlc19bkW/data/ed9ced088/3cf628ffb52942bfa84020c33d4f6bea [2022-11-23 15:14:25,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:14:25,132 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:14:25,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:14:25,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:14:25,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:14:25,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:14:25" (1/1) ... [2022-11-23 15:14:25,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1728054b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:25, skipping insertion in model container [2022-11-23 15:14:25,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:14:25" (1/1) ... [2022-11-23 15:14:25,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:14:25,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:14:25,733 WARN L237 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_e64b5006-64de-48e8-9706-a4af3aa90fc4/sv-benchmarks/c/product-lines/email_spec11_product22.cil.c[40875,40888] [2022-11-23 15:14:25,902 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:14:25,925 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:14:26,027 WARN L237 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_e64b5006-64de-48e8-9706-a4af3aa90fc4/sv-benchmarks/c/product-lines/email_spec11_product22.cil.c[40875,40888] [2022-11-23 15:14:26,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:14:26,094 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:14:26,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:26 WrapperNode [2022-11-23 15:14:26,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:14:26,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:14:26,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:14:26,097 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:14:26,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:26" (1/1) ... [2022-11-23 15:14:26,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:26" (1/1) ... [2022-11-23 15:14:26,192 INFO L138 Inliner]: procedures = 128, calls = 205, calls flagged for inlining = 58, calls inlined = 53, statements flattened = 1011 [2022-11-23 15:14:26,193 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:14:26,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:14:26,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:14:26,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:14:26,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:26" (1/1) ... [2022-11-23 15:14:26,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:26" (1/1) ... [2022-11-23 15:14:26,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:26" (1/1) ... [2022-11-23 15:14:26,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:26" (1/1) ... [2022-11-23 15:14:26,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:26" (1/1) ... [2022-11-23 15:14:26,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:26" (1/1) ... [2022-11-23 15:14:26,283 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:26" (1/1) ... [2022-11-23 15:14:26,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:26" (1/1) ... [2022-11-23 15:14:26,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:14:26,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:14:26,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:14:26,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:14:26,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:26" (1/1) ... [2022-11-23 15:14:26,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:14:26,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64b5006-64de-48e8-9706-a4af3aa90fc4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:14:26,367 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64b5006-64de-48e8-9706-a4af3aa90fc4/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:14:26,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64b5006-64de-48e8-9706-a4af3aa90fc4/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:14:26,426 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-23 15:14:26,427 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-23 15:14:26,427 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-23 15:14:26,427 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-23 15:14:26,427 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-23 15:14:26,427 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-23 15:14:26,427 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-23 15:14:26,428 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-23 15:14:26,428 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-23 15:14:26,428 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-23 15:14:26,428 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-23 15:14:26,428 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-23 15:14:26,429 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-23 15:14:26,429 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-23 15:14:26,429 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-23 15:14:26,429 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-23 15:14:26,429 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-23 15:14:26,429 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-23 15:14:26,430 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-23 15:14:26,430 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-23 15:14:26,430 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-23 15:14:26,430 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-23 15:14:26,431 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-23 15:14:26,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:14:26,432 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-23 15:14:26,432 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-23 15:14:26,433 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-23 15:14:26,433 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-23 15:14:26,433 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-23 15:14:26,433 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-23 15:14:26,435 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-23 15:14:26,435 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-23 15:14:26,435 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-23 15:14:26,436 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-23 15:14:26,436 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-23 15:14:26,436 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-23 15:14:26,436 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-23 15:14:26,436 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-23 15:14:26,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:14:26,437 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-23 15:14:26,437 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-23 15:14:26,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:14:26,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:14:26,762 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:14:26,765 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:14:27,678 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:14:28,217 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:14:28,218 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:14:28,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:14:28 BoogieIcfgContainer [2022-11-23 15:14:28,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:14:28,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:14:28,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:14:28,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:14:28,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:14:25" (1/3) ... [2022-11-23 15:14:28,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45598830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:14:28, skipping insertion in model container [2022-11-23 15:14:28,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:26" (2/3) ... [2022-11-23 15:14:28,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45598830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:14:28, skipping insertion in model container [2022-11-23 15:14:28,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:14:28" (3/3) ... [2022-11-23 15:14:28,236 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product22.cil.c [2022-11-23 15:14:28,257 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:14:28,258 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:14:28,336 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:14:28,346 INFO L357 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2c141052, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:14:28,347 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:14:28,353 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 100 states have (on average 1.34) internal successors, (134), 104 states have internal predecessors, (134), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-23 15:14:28,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-23 15:14:28,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:28,370 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:28,371 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:28,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:28,381 INFO L85 PathProgramCache]: Analyzing trace with hash -897372651, now seen corresponding path program 1 times [2022-11-23 15:14:28,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:28,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778845827] [2022-11-23 15:14:28,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:28,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:28,816 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:14:28,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:28,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778845827] [2022-11-23 15:14:28,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778845827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:28,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:14:28,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:14:28,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753683448] [2022-11-23 15:14:28,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:28,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:14:28,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:28,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:14:28,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:14:28,859 INFO L87 Difference]: Start difference. First operand has 171 states, 100 states have (on average 1.34) internal successors, (134), 104 states have internal predecessors, (134), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:14:29,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:29,052 INFO L93 Difference]: Finished difference Result 259 states and 346 transitions. [2022-11-23 15:14:29,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:14:29,055 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 66 [2022-11-23 15:14:29,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:29,073 INFO L225 Difference]: With dead ends: 259 [2022-11-23 15:14:29,073 INFO L226 Difference]: Without dead ends: 168 [2022-11-23 15:14:29,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:14:29,087 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:29,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 196 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:14:29,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-23 15:14:29,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-11-23 15:14:29,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 98 states have (on average 1.3061224489795917) internal successors, (128), 101 states have internal predecessors, (128), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-23 15:14:29,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 227 transitions. [2022-11-23 15:14:29,172 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 227 transitions. Word has length 66 [2022-11-23 15:14:29,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:29,174 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 227 transitions. [2022-11-23 15:14:29,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:14:29,174 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 227 transitions. [2022-11-23 15:14:29,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-23 15:14:29,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:29,183 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:29,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:14:29,183 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:29,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:29,184 INFO L85 PathProgramCache]: Analyzing trace with hash -497417856, now seen corresponding path program 1 times [2022-11-23 15:14:29,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:29,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617726220] [2022-11-23 15:14:29,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:29,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:29,520 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:14:29,521 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:29,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617726220] [2022-11-23 15:14:29,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617726220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:29,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:14:29,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:14:29,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625564521] [2022-11-23 15:14:29,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:29,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:14:29,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:29,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:14:29,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:14:29,527 INFO L87 Difference]: Start difference. First operand 168 states and 227 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:14:29,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:29,684 INFO L93 Difference]: Finished difference Result 255 states and 334 transitions. [2022-11-23 15:14:29,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:14:29,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 67 [2022-11-23 15:14:29,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:29,690 INFO L225 Difference]: With dead ends: 255 [2022-11-23 15:14:29,692 INFO L226 Difference]: Without dead ends: 170 [2022-11-23 15:14:29,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:14:29,697 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 0 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:29,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 385 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:14:29,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-23 15:14:29,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2022-11-23 15:14:29,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 100 states have (on average 1.3) internal successors, (130), 103 states have internal predecessors, (130), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-23 15:14:29,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 229 transitions. [2022-11-23 15:14:29,722 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 229 transitions. Word has length 67 [2022-11-23 15:14:29,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:29,722 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 229 transitions. [2022-11-23 15:14:29,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:14:29,723 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 229 transitions. [2022-11-23 15:14:29,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-23 15:14:29,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:29,733 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:29,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:14:29,733 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:29,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:29,744 INFO L85 PathProgramCache]: Analyzing trace with hash 721315999, now seen corresponding path program 1 times [2022-11-23 15:14:29,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:29,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326020588] [2022-11-23 15:14:29,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:29,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:29,901 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:14:29,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:29,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326020588] [2022-11-23 15:14:29,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326020588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:29,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:14:29,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:14:29,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303097767] [2022-11-23 15:14:29,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:29,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:14:29,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:29,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:14:29,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:14:29,905 INFO L87 Difference]: Start difference. First operand 170 states and 229 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:14:30,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:30,013 INFO L93 Difference]: Finished difference Result 370 states and 517 transitions. [2022-11-23 15:14:30,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:14:30,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 72 [2022-11-23 15:14:30,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:30,016 INFO L225 Difference]: With dead ends: 370 [2022-11-23 15:14:30,016 INFO L226 Difference]: Without dead ends: 218 [2022-11-23 15:14:30,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:14:30,019 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 57 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:30,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 392 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:14:30,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-11-23 15:14:30,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 213. [2022-11-23 15:14:30,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 132 states have (on average 1.3863636363636365) internal successors, (183), 135 states have internal predecessors, (183), 61 states have call successors, (61), 19 states have call predecessors, (61), 19 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-23 15:14:30,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 304 transitions. [2022-11-23 15:14:30,052 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 304 transitions. Word has length 72 [2022-11-23 15:14:30,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:30,054 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 304 transitions. [2022-11-23 15:14:30,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:14:30,055 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 304 transitions. [2022-11-23 15:14:30,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 15:14:30,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:30,058 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:30,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:14:30,059 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:30,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:30,059 INFO L85 PathProgramCache]: Analyzing trace with hash 953316719, now seen corresponding path program 1 times [2022-11-23 15:14:30,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:30,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255306408] [2022-11-23 15:14:30,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:30,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:30,267 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:14:30,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:30,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255306408] [2022-11-23 15:14:30,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255306408] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:14:30,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036206586] [2022-11-23 15:14:30,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:30,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:14:30,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64b5006-64de-48e8-9706-a4af3aa90fc4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:14:30,275 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64b5006-64de-48e8-9706-a4af3aa90fc4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:14:30,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64b5006-64de-48e8-9706-a4af3aa90fc4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:14:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:30,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:14:30,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:14:30,751 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:14:30,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:14:30,853 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:14:30,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036206586] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:14:30,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1524567313] [2022-11-23 15:14:30,880 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-11-23 15:14:30,881 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:14:30,888 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:14:30,894 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:14:30,894 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:15:16,197 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-23 15:15:16,507 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-23 15:15:16,840 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 255 for LOIs [2022-11-23 15:15:18,819 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-23 15:15:18,859 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 257 for LOIs [2022-11-23 15:15:40,430 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 436 for LOIs [2022-11-23 15:15:42,543 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 436 for LOIs [2022-11-23 15:15:42,824 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 446 for LOIs [2022-11-23 15:15:43,397 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 469 for LOIs [2022-11-23 15:15:46,623 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:16:02,268 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:16:07,639 WARN L233 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:16:31,160 WARN L233 SmtUtils]: Spent 6.19s on a formula simplification. DAG size of input: 486 DAG size of output: 324 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:16:39,124 WARN L233 SmtUtils]: Spent 7.72s on a formula simplification. DAG size of input: 498 DAG size of output: 382 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:16:45,590 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 508 DAG size of output: 290 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:16:53,579 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 563 DAG size of output: 324 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:16:58,920 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 559 DAG size of output: 320 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:17:04,377 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 565 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:17:21,178 WARN L233 SmtUtils]: Spent 13.15s on a formula simplification. DAG size of input: 469 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:17:44,730 WARN L233 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 446 DAG size of output: 256 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:17:50,947 WARN L233 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 465 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:17:56,804 WARN L233 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 473 DAG size of output: 311 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:18:14,528 WARN L233 SmtUtils]: Spent 8.09s on a formula simplification. DAG size of input: 553 DAG size of output: 416 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:18:23,965 WARN L233 SmtUtils]: Spent 8.77s on a formula simplification. DAG size of input: 596 DAG size of output: 441 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:18:33,408 WARN L233 SmtUtils]: Spent 8.75s on a formula simplification. DAG size of input: 597 DAG size of output: 439 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:18:44,185 WARN L233 SmtUtils]: Spent 10.05s on a formula simplification. DAG size of input: 661 DAG size of output: 482 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:18:55,757 WARN L233 SmtUtils]: Spent 10.83s on a formula simplification. DAG size of input: 683 DAG size of output: 504 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:19:27,946 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3018#(and (<= |outgoing_getClientAutoResponse_~retValue_acc~18#1| 1) (<= 2 |outgoing_~tmp~6#1|) (= ~__ste_Client_Keyring1_User2~0 0) (<= 0 |outgoing_getClientPrivateKey_#res#1|) (<= 2 |outgoing_incoming__wrappee__Forward_~client#1|) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= 0 |outgoing_getClientPrivateKey_~retValue_acc~19#1|) (= |old(~__ste_email_encryptionKey0~0)| 0) (<= |outgoing_incoming_~tmp~9#1| 0) (<= 1 |outgoing_outgoing__wrappee__Keys_~msg#1|) (<= 2 |outgoing_incoming__wrappee__Encrypt_~client#1|) (= ~__ste_email_subject0~0.offset 0) (<= 0 ~__ste_email_encryptionKey1~0) (= ~__SELECTED_FEATURE_Sign~0 0) (= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_outbuffer3~0 0) (<= 2 |outgoing_~receiver~0#1|) (<= |outgoing_findPublicKey_~retValue_acc~24#1| 0) (<= 1 |outgoing_mail_#in~client#1|) (<= |outgoing_mail_#in~msg#1| 1) (<= 0 (+ 2147483648 |outgoing_getClientId_#res#1|)) (<= 2 |outgoing_findPublicKey_#in~userid#1|) (= ~__ste_Client_counter~0 0) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= |outgoing_incoming__wrappee__AutoResponder_~client#1| 2) (<= |outgoing_autoRespond_~__utac__ad__arg2~0#1| 1) (<= 1 |outgoing_incoming__wrappee__Forward_#in~msg#1|) (<= 0 |outgoing_incoming__wrappee__AutoResponder_~tmp~7#1|) (<= ~__ste_email_encryptionKey1~0 0) (<= 1 |outgoing_deliver_#in~msg#1|) (<= 2 |outgoing_incoming__wrappee__Forward_#in~client#1|) (<= |old(~__ste_email_to0~0)| 2) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (<= |outgoing_~tmp___0~2#1| 0) (<= 1 |outgoing_mail_~msg#1|) (<= 0 |outgoing_getClientAutoResponse_#res#1|) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (= ~__ste_client_forwardReceiver3~0 0) (= ~__ste_client_name2~0.offset 0) (<= |outgoing___utac_acc__DecryptAutoResponder_spec__1_#in~msg#1| 1) (= ~__ste_client_name1~0.base 0) (<= 0 ~__ste_client_autoResponse1~0) (<= |outgoing_findPublicKey_~handle#1| 1) (= ~__SELECTED_FEATURE_Verify~0 0) (= ~__ste_Client_Keyring1_User0~0 0) (<= 2 |outgoing___utac_acc__DecryptAutoResponder_spec__1_~client#1|) (<= |outgoing_autoRespond_#in~msg#1| 1) (<= 0 |outgoing_getClientAutoResponse_~retValue_acc~18#1|) (<= 2 |old(~__ste_email_to0~0)|) (<= |outgoing_getClientPrivateKey_#res#1| 0) (<= ~__ste_client_idCounter2~0 3) (<= ~queued_message~0 0) (= ~__ste_email_body1~0.offset 0) (= ~__SELECTED_FEATURE_Encrypt~0 0) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= ~__ste_email_from0~0 2147483647) (= ~__ste_ClientAddressBook_size1~0 0) (= ~__ste_Client_Keyring0_PublicKey0~0 0) (<= |outgoing___utac_acc__DecryptAutoResponder_spec__1_#in~client#1| 2) (= ~__ste_Email_counter~0 0) (<= |outgoing_incoming_#in~msg#1| 1) (<= 2 |outgoing_deliver_~client#1|) (= ~__ste_ClientKeyring_size1~0 0) (= ~__ste_email_body0~0.offset 0) (= ~__ste_email_isSignatureVerified0~0 0) (<= 1 |outgoing_~client#1|) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (<= |outgoing_getClientAutoResponse_#res#1| 1) (<= |outgoing_getClientAutoResponse_~handle#1| 2) (<= |outgoing_findPublicKey_#in~userid#1| 2) (<= 2 |outgoing_incoming_~client#1|) (= ~__ste_ClientAddressBook_size0~0 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (<= 1 |outgoing_deliver_~msg#1|) (= ~__ste_client_name1~0.offset 0) (<= |outgoing_getClientId_#res#1| 2147483647) (<= 2 |outgoing_findPublicKey_~userid#1|) (<= 0 |outgoing_incoming_~tmp~9#1|) (<= |outgoing_incoming__wrappee__Encrypt_~msg#1| 1) (= ~head~0.offset 0) (= ~__ste_client_name0~0.offset 0) (= |outgoing_#in~msg#1| 1) (<= |outgoing_deliver_#in~msg#1| 1) (<= 1 |outgoing_outgoing__wrappee__Keys_~client#1|) (<= |outgoing_autoRespond_#in~client#1| 2) (<= 2 |outgoing_getClientAutoResponse_#in~handle#1|) (<= ~__ste_client_autoResponse1~0 1) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (= |old(~queue_empty~0)| 1) (<= ~__ste_client_privateKey2~0 789) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (= |old(~__ste_email_from0~0)| 0) (<= |outgoing_deliver_#in~client#1| 2) (<= |outgoing_deliver_~msg#1| 1) (<= ~queue_empty~0 1) (<= 1 |outgoing_findPublicKey_#in~handle#1|) (= ~__ste_email_signKey0~0 0) (<= 1 |outgoing_incoming_#in~msg#1|) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 1 |outgoing_getClientId_~handle#1|) (<= 1 |outgoing_autoRespond_~msg#1|) (<= |outgoing_incoming__wrappee__Encrypt_#in~client#1| 2) (<= 2 |outgoing_incoming__wrappee__AutoResponder_~client#1|) (<= 0 ~__ste_email_isEncrypted1~0) (<= 0 (+ |outgoing_outgoing__wrappee__Keys_~tmp~5#1| 2147483648)) (= ~__SELECTED_FEATURE_Keys~0 0) (<= 1 |outgoing_incoming__wrappee__AutoResponder_~msg#1|) (= ~__SELECTED_FEATURE_AddressBook~0 0) (= ~__ste_client_forwardReceiver2~0 0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (= ~__SELECTED_FEATURE_Forward~0 0) (<= 2 |outgoing_getClientPrivateKey_#in~handle#1|) (<= 0 ~__ste_email_isEncrypted0~0) (<= |outgoing_findPublicKey_#in~handle#1| 1) (= ~__ste_Client_Keyring0_User0~0 0) (<= 1 |outgoing_mail_#in~msg#1|) (= ~__ste_email_isSigned0~0 0) (<= |outgoing_incoming__wrappee__AutoResponder_#in~msg#1| 1) (<= ~__ste_client_idCounter0~0 2147483647) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (= ~__ste_email_isSigned1~0 0) (<= |outgoing_getClientAutoResponse_#in~handle#1| 2) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isEncrypted0~0 0) (= ~__ste_Client_AddressBook0_Alias0~0 0) (<= 1 |outgoing_outgoing__wrappee__Keys_#in~msg#1|) (<= 1 |outgoing_incoming__wrappee__AutoResponder_#in~msg#1|) (<= |outgoing_incoming__wrappee__Encrypt_~client#1| 2) (<= 2 |outgoing_getClientAutoResponse_~handle#1|) (= ~__ste_email_id0~0 0) (<= ~__ste_client_autoResponse0~0 0) (<= 1 |outgoing_autoRespond_~__utac__ad__arg2~0#1|) (<= |outgoing_incoming__wrappee__Forward_#in~msg#1| 1) (= ~__ste_Client_Keyring2_User1~0 0) (<= 3 ~__ste_client_idCounter2~0) (<= |outgoing___utac_acc__DecryptAutoResponder_spec__1_~msg#1| 1) (<= |outgoing_deliver_~client#1| 2) (= ~__ste_Client_AddressBook2_Address2~0 0) (<= 1 |outgoing_incoming__wrappee__Forward_~msg#1|) (<= |outgoing_autoRespond_~msg#1| 1) (= 3 ~chuck~0) (= ~__ste_Client_AddressBook2_Address1~0 0) (<= 1 ~queue_empty~0) (<= 1 |outgoing_autoRespond_#in~msg#1|) (= ~bob~0 1) (<= |outgoing_incoming__wrappee__AutoResponder_#in~client#1| 2) (= ~__ste_client_forwardReceiver1~0 0) (<= 0 ~__ste_client_autoResponse0~0) (= |outgoing_incoming_~privkey~0#1| 0) (<= 0 ~queued_message~0) (<= |outgoing_~receiver~0#1| 2) (= ~__ste_Client_AddressBook1_Alias2~0 0) (= |old(~__ste_email_isEncrypted0~0)| 0) (= ~__ste_client_outbuffer0~0 0) (<= |outgoing_findPublicKey_#res#1| 0) (<= |outgoing_outgoing__wrappee__Keys_~client#1| 1) (<= 789 ~__ste_client_privateKey2~0) (<= |outgoing_getClientId_#in~handle#1| 1) (<= |outgoing_getClientId_~retValue_acc~26#1| 2147483647) (<= |outgoing_findPublicKey_~userid#1| 2) (<= |outgoing_incoming__wrappee__Forward_~msg#1| 1) (<= |outgoing_incoming_~client#1| 2) (<= 2 |outgoing_incoming__wrappee__AutoResponder_#in~client#1|) (<= |outgoing_~tmp~6#1| 2) (<= 1 |outgoing_~msg#1|) (= ~__SELECTED_FEATURE_Base~0 0) (= ~__ste_client_forwardReceiver0~0 0) (<= |outgoing_mail_~client#1| 1) (= ~__ste_Client_Keyring2_User0~0 0) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (= ~__ste_Client_AddressBook2_Address0~0 0) (= ~__ste_email_isSignatureVerified1~0 0) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~0) (= |old(~queued_message~0)| 0) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (= |outgoing_~pubkey~0#1| 0) (= ~__ste_Client_AddressBook1_Address0~0 0) (= ~__ste_client_name2~0.base 0) (<= 2 |outgoing_autoRespond_~__utac__ad__arg1~0#1|) (<= 0 |outgoing_findPublicKey_~retValue_acc~24#1|) (<= |outgoing_mail_~msg#1| 1) (= |old(~queued_client~0)| 0) (<= |outgoing_getClientPrivateKey_~handle#1| 2) (<= |outgoing_mail_~tmp~4#1| 2) (<= ~__ste_email_encryptionKey0~0 0) (= ~__ste_email_subject1~0.base 0) (<= 0 |outgoing_~tmp___0~2#1|) (= 0 |outgoing___utac_acc__DecryptAutoResponder_spec__1_~tmp~0#1|) (<= |outgoing_outgoing__wrappee__Keys_~tmp~5#1| 2147483647) (= ~__ste_Client_AddressBook1_Alias0~0 0) (<= |outgoing_mail_#in~client#1| 1) (<= |outgoing_outgoing__wrappee__Keys_#in~client#1| 1) (<= |outgoing_getClientPrivateKey_~retValue_acc~19#1| 0) (= ~__ste_Client_Keyring2_User2~0 0) (= ~head~0.base 0) (<= 2 |outgoing_autoRespond_#in~client#1|) (= ~__ste_Client_Keyring1_User1~0 0) (<= 2 |outgoing___utac_acc__DecryptAutoResponder_spec__1_#in~client#1|) (<= |outgoing_autoRespond_~__utac__ad__arg1~0#1| 2) (= |#NULL.offset| 0) (<= 1 |outgoing_incoming__wrappee__Encrypt_#in~msg#1|) (<= |outgoing_incoming_~msg#1| 1) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= |outgoing_#in~client#1| 1) (<= 1 |outgoing_incoming_~msg#1|) (<= |outgoing_incoming__wrappee__Forward_~client#1| 2) (<= 0 ~__ste_client_autoResponse2~0) (= ~__ste_email_subject1~0.offset 0) (<= |outgoing_autoRespond_~client#1| 2) (= ~__ste_Client_AddressBook0_Alias2~0 0) (= ~__ste_ClientKeyring_size0~0 0) (<= 2 |outgoing_incoming__wrappee__Encrypt_#in~client#1|) (<= |outgoing_~msg#1| 1) (<= 2 |outgoing_autoRespond_~client#1|) (= ~__ste_Client_AddressBook1_Address1~0 0) (<= |outgoing_outgoing__wrappee__Keys_~msg#1| 1) (= 0 ~__ste_Client_AddressBook0_Address0~0) (<= |outgoing_incoming__wrappee__Encrypt_#in~msg#1| 1) (= ~__ste_client_outbuffer1~0 0) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= ~__ste_email_isEncrypted1~0 0) (<= 1 |outgoing_findPublicKey_~handle#1|) (<= ~__ste_client_privateKey1~0 0) (= |old(~__ste_email_isEncrypted1~0)| 0) (<= 1 |outgoing_getClientId_#in~handle#1|) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= |outgoing_incoming__wrappee__Forward_#in~client#1| 2) (<= |outgoing_getClientId_~handle#1| 1) (<= 1 |outgoing_#in~client#1|) (<= |outgoing_~client#1| 1) (<= |outgoing___utac_acc__DecryptAutoResponder_spec__1_~client#1| 2) (<= 1 |outgoing_incoming__wrappee__Encrypt_~msg#1|) (<= 2 |outgoing_getClientPrivateKey_~handle#1|) (= |old(~__ste_email_encryptionKey1~0)| 0) (<= 2 |outgoing_incoming_#in~client#1|) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (<= 0 |outgoing_findPublicKey_#res#1|) (= ~__ste_client_outbuffer2~0 0) (<= 1 |outgoing_outgoing__wrappee__Keys_#in~client#1|) (<= |outgoing_incoming__wrappee__AutoResponder_~msg#1| 1) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= |outgoing_getClientPrivateKey_#in~handle#1| 2) (<= 2 ~__ste_email_to0~0) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (<= 1 |outgoing_mail_~client#1|) (= ~__ste_ClientAddressBook_size2~0 0) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (<= ~__ste_client_autoResponse2~0 0) (<= 1 |outgoing___utac_acc__DecryptAutoResponder_spec__1_#in~msg#1|) (= ~__ste_email_body1~0.base 0) (= ~__ste_ClientKeyring_size2~0 0) (<= 2 |outgoing_mail_~tmp~4#1|) (<= 1 |outgoing___utac_acc__DecryptAutoResponder_spec__1_~msg#1|) (<= |outgoing_incoming__wrappee__AutoResponder_~tmp~7#1| 1) (<= 0 (+ |outgoing_getClientId_~retValue_acc~26#1| 2147483648)) (<= 0 ~__ste_email_encryptionKey0~0) (<= 2 |outgoing_deliver_#in~client#1|) (= |#NULL.base| 0) (<= |outgoing_incoming_#in~client#1| 2) (<= |outgoing_outgoing__wrappee__Keys_#in~msg#1| 1) (<= 0 ~__ste_client_privateKey1~0) (= ~__ste_email_signKey1~0 0) (<= ~queued_client~0 0))' at error location [2022-11-23 15:19:27,946 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:19:27,946 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:19:27,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-23 15:19:27,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059701440] [2022-11-23 15:19:27,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:19:27,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 15:19:27,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:19:27,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 15:19:27,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=3251, Unknown=0, NotChecked=0, Total=3422 [2022-11-23 15:19:27,954 INFO L87 Difference]: Start difference. First operand 213 states and 304 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-23 15:19:28,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:19:28,312 INFO L93 Difference]: Finished difference Result 548 states and 836 transitions. [2022-11-23 15:19:28,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:19:28,313 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 73 [2022-11-23 15:19:28,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:19:28,321 INFO L225 Difference]: With dead ends: 548 [2022-11-23 15:19:28,322 INFO L226 Difference]: Without dead ends: 463 [2022-11-23 15:19:28,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 221.3s TimeCoverageRelationStatistics Valid=171, Invalid=3251, Unknown=0, NotChecked=0, Total=3422 [2022-11-23 15:19:28,336 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 215 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:19:28,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 775 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:19:28,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-11-23 15:19:28,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 448. [2022-11-23 15:19:28,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 303 states have (on average 1.5148514851485149) internal successors, (459), 306 states have internal predecessors, (459), 125 states have call successors, (125), 19 states have call predecessors, (125), 19 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) [2022-11-23 15:19:28,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 708 transitions. [2022-11-23 15:19:28,422 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 708 transitions. Word has length 73 [2022-11-23 15:19:28,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:19:28,422 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 708 transitions. [2022-11-23 15:19:28,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-23 15:19:28,423 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 708 transitions. [2022-11-23 15:19:28,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-23 15:19:28,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:28,427 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:19:28,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64b5006-64de-48e8-9706-a4af3aa90fc4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:19:28,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64b5006-64de-48e8-9706-a4af3aa90fc4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-23 15:19:28,636 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:19:28,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:28,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1153268605, now seen corresponding path program 1 times [2022-11-23 15:19:28,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:19:28,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31444565] [2022-11-23 15:19:28,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:28,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:19:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:19:28,794 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:19:28,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:19:28,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31444565] [2022-11-23 15:19:28,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31444565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:19:28,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:19:28,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:19:28,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235403645] [2022-11-23 15:19:28,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:19:28,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:19:28,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:19:28,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:19:28,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:28,800 INFO L87 Difference]: Start difference. First operand 448 states and 708 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:19:28,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:19:28,957 INFO L93 Difference]: Finished difference Result 1101 states and 1774 transitions. [2022-11-23 15:19:28,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:19:28,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 79 [2022-11-23 15:19:28,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:19:28,965 INFO L225 Difference]: With dead ends: 1101 [2022-11-23 15:19:28,966 INFO L226 Difference]: Without dead ends: 685 [2022-11-23 15:19:28,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:28,968 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 55 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:19:28,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 416 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:19:28,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2022-11-23 15:19:29,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 680. [2022-11-23 15:19:29,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 471 states have (on average 1.5329087048832273) internal successors, (722), 474 states have internal predecessors, (722), 189 states have call successors, (189), 19 states have call predecessors, (189), 19 states have return successors, (188), 188 states have call predecessors, (188), 188 states have call successors, (188) [2022-11-23 15:19:29,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1099 transitions. [2022-11-23 15:19:29,046 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1099 transitions. Word has length 79 [2022-11-23 15:19:29,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:19:29,046 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 1099 transitions. [2022-11-23 15:19:29,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:19:29,047 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1099 transitions. [2022-11-23 15:19:29,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-23 15:19:29,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:29,055 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:19:29,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:19:29,056 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:19:29,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:29,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1958750794, now seen corresponding path program 1 times [2022-11-23 15:19:29,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:19:29,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936791457] [2022-11-23 15:19:29,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:29,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:19:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:19:29,156 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:19:29,156 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:19:29,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936791457] [2022-11-23 15:19:29,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936791457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:19:29,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:19:29,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:19:29,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467119532] [2022-11-23 15:19:29,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:19:29,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:19:29,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:19:29,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:19:29,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:29,160 INFO L87 Difference]: Start difference. First operand 680 states and 1099 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:19:29,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:19:29,332 INFO L93 Difference]: Finished difference Result 1658 states and 2717 transitions. [2022-11-23 15:19:29,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:19:29,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 80 [2022-11-23 15:19:29,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:19:29,340 INFO L225 Difference]: With dead ends: 1658 [2022-11-23 15:19:29,341 INFO L226 Difference]: Without dead ends: 1040 [2022-11-23 15:19:29,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:29,344 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 53 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:19:29,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 393 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:19:29,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2022-11-23 15:19:29,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 1035. [2022-11-23 15:19:29,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 731 states have (on average 1.5403556771545828) internal successors, (1126), 734 states have internal predecessors, (1126), 284 states have call successors, (284), 19 states have call predecessors, (284), 19 states have return successors, (283), 283 states have call predecessors, (283), 283 states have call successors, (283) [2022-11-23 15:19:29,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1693 transitions. [2022-11-23 15:19:29,433 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1693 transitions. Word has length 80 [2022-11-23 15:19:29,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:19:29,434 INFO L495 AbstractCegarLoop]: Abstraction has 1035 states and 1693 transitions. [2022-11-23 15:19:29,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:19:29,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1693 transitions. [2022-11-23 15:19:29,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-23 15:19:29,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:29,441 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:19:29,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:19:29,441 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:19:29,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:29,442 INFO L85 PathProgramCache]: Analyzing trace with hash 2027824817, now seen corresponding path program 1 times [2022-11-23 15:19:29,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:19:29,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511167783] [2022-11-23 15:19:29,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:29,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:19:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:19:29,538 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:19:29,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:19:29,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511167783] [2022-11-23 15:19:29,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511167783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:19:29,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:19:29,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:19:29,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438477526] [2022-11-23 15:19:29,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:19:29,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:19:29,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:19:29,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:19:29,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:29,541 INFO L87 Difference]: Start difference. First operand 1035 states and 1693 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:19:29,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:19:29,746 INFO L93 Difference]: Finished difference Result 2456 states and 4061 transitions. [2022-11-23 15:19:29,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:19:29,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 81 [2022-11-23 15:19:29,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:19:29,758 INFO L225 Difference]: With dead ends: 2456 [2022-11-23 15:19:29,758 INFO L226 Difference]: Without dead ends: 1563 [2022-11-23 15:19:29,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:29,763 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 51 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:19:29,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 388 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:19:29,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2022-11-23 15:19:29,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1558. [2022-11-23 15:19:29,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1131 states have (on average 1.5455349248452697) internal successors, (1748), 1134 states have internal predecessors, (1748), 407 states have call successors, (407), 19 states have call predecessors, (407), 19 states have return successors, (406), 406 states have call predecessors, (406), 406 states have call successors, (406) [2022-11-23 15:19:29,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2561 transitions. [2022-11-23 15:19:29,921 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2561 transitions. Word has length 81 [2022-11-23 15:19:29,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:19:29,922 INFO L495 AbstractCegarLoop]: Abstraction has 1558 states and 2561 transitions. [2022-11-23 15:19:29,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:19:29,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2561 transitions. [2022-11-23 15:19:29,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-23 15:19:29,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:29,930 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:19:29,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:19:29,931 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:19:29,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:29,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1846513015, now seen corresponding path program 1 times [2022-11-23 15:19:29,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:19:29,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179784760] [2022-11-23 15:19:29,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:29,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:19:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:19:30,045 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:19:30,045 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:19:30,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179784760] [2022-11-23 15:19:30,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179784760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:19:30,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:19:30,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:19:30,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796932424] [2022-11-23 15:19:30,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:19:30,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:19:30,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:19:30,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:19:30,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:30,048 INFO L87 Difference]: Start difference. First operand 1558 states and 2561 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:19:30,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:19:30,285 INFO L93 Difference]: Finished difference Result 3666 states and 6089 transitions. [2022-11-23 15:19:30,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:19:30,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 82 [2022-11-23 15:19:30,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:19:30,300 INFO L225 Difference]: With dead ends: 3666 [2022-11-23 15:19:30,300 INFO L226 Difference]: Without dead ends: 2387 [2022-11-23 15:19:30,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:30,309 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 49 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:19:30,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 388 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:19:30,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2387 states. [2022-11-23 15:19:30,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2387 to 2382. [2022-11-23 15:19:30,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 1776 states have (on average 1.5484234234234233) internal successors, (2750), 1779 states have internal predecessors, (2750), 586 states have call successors, (586), 19 states have call predecessors, (586), 19 states have return successors, (585), 585 states have call predecessors, (585), 585 states have call successors, (585) [2022-11-23 15:19:30,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3921 transitions. [2022-11-23 15:19:30,499 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 3921 transitions. Word has length 82 [2022-11-23 15:19:30,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:19:30,500 INFO L495 AbstractCegarLoop]: Abstraction has 2382 states and 3921 transitions. [2022-11-23 15:19:30,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:19:30,501 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 3921 transitions. [2022-11-23 15:19:30,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-23 15:19:30,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:30,510 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:19:30,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 15:19:30,511 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:19:30,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:30,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1376795789, now seen corresponding path program 1 times [2022-11-23 15:19:30,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:19:30,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144500379] [2022-11-23 15:19:30,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:30,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:19:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:19:30,603 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:19:30,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:19:30,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144500379] [2022-11-23 15:19:30,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144500379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:19:30,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:19:30,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:19:30,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432127683] [2022-11-23 15:19:30,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:19:30,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:19:30,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:19:30,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:19:30,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:30,607 INFO L87 Difference]: Start difference. First operand 2382 states and 3921 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:19:30,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:19:30,979 INFO L93 Difference]: Finished difference Result 5877 states and 9761 transitions. [2022-11-23 15:19:30,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:19:30,980 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), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 83 [2022-11-23 15:19:30,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:19:31,005 INFO L225 Difference]: With dead ends: 5877 [2022-11-23 15:19:31,005 INFO L226 Difference]: Without dead ends: 3917 [2022-11-23 15:19:31,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:31,014 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 47 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:19:31,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 410 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:19:31,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3917 states. [2022-11-23 15:19:31,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3917 to 3912. [2022-11-23 15:19:31,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3912 states, 2930 states have (on average 1.5375426621160408) internal successors, (4505), 2933 states have internal predecessors, (4505), 962 states have call successors, (962), 19 states have call predecessors, (962), 19 states have return successors, (961), 961 states have call predecessors, (961), 961 states have call successors, (961) [2022-11-23 15:19:31,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3912 states to 3912 states and 6428 transitions. [2022-11-23 15:19:31,430 INFO L78 Accepts]: Start accepts. Automaton has 3912 states and 6428 transitions. Word has length 83 [2022-11-23 15:19:31,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:19:31,430 INFO L495 AbstractCegarLoop]: Abstraction has 3912 states and 6428 transitions. [2022-11-23 15:19:31,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:19:31,431 INFO L276 IsEmpty]: Start isEmpty. Operand 3912 states and 6428 transitions. [2022-11-23 15:19:31,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-23 15:19:31,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:31,445 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:19:31,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 15:19:31,445 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:19:31,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:31,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1657397349, now seen corresponding path program 1 times [2022-11-23 15:19:31,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:19:31,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397046912] [2022-11-23 15:19:31,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:31,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:19:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:19:31,536 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:19:31,537 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:19:31,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397046912] [2022-11-23 15:19:31,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397046912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:19:31,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:19:31,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:19:31,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423632546] [2022-11-23 15:19:31,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:19:31,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:19:31,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:19:31,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:19:31,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:31,539 INFO L87 Difference]: Start difference. First operand 3912 states and 6428 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:19:32,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:19:32,110 INFO L93 Difference]: Finished difference Result 9738 states and 16158 transitions. [2022-11-23 15:19:32,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:19:32,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 84 [2022-11-23 15:19:32,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:19:32,151 INFO L225 Difference]: With dead ends: 9738 [2022-11-23 15:19:32,151 INFO L226 Difference]: Without dead ends: 6514 [2022-11-23 15:19:32,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:32,163 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 45 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:19:32,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 393 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:19:32,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6514 states. [2022-11-23 15:19:32,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6514 to 6509. [2022-11-23 15:19:32,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6509 states, 4921 states have (on average 1.5334281650071124) internal successors, (7546), 4924 states have internal predecessors, (7546), 1568 states have call successors, (1568), 19 states have call predecessors, (1568), 19 states have return successors, (1567), 1567 states have call predecessors, (1567), 1567 states have call successors, (1567) [2022-11-23 15:19:32,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6509 states to 6509 states and 10681 transitions. [2022-11-23 15:19:32,829 INFO L78 Accepts]: Start accepts. Automaton has 6509 states and 10681 transitions. Word has length 84 [2022-11-23 15:19:32,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:19:32,830 INFO L495 AbstractCegarLoop]: Abstraction has 6509 states and 10681 transitions. [2022-11-23 15:19:32,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:19:32,830 INFO L276 IsEmpty]: Start isEmpty. Operand 6509 states and 10681 transitions. [2022-11-23 15:19:32,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-23 15:19:32,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:32,851 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:19:32,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 15:19:32,851 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:19:32,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:32,852 INFO L85 PathProgramCache]: Analyzing trace with hash -243257061, now seen corresponding path program 1 times [2022-11-23 15:19:32,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:19:32,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088545120] [2022-11-23 15:19:32,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:32,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:19:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:19:32,955 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:19:32,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:19:32,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088545120] [2022-11-23 15:19:32,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088545120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:19:32,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:19:32,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:19:32,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179425956] [2022-11-23 15:19:32,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:19:32,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:19:32,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:19:32,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:19:32,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:32,958 INFO L87 Difference]: Start difference. First operand 6509 states and 10681 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:19:33,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:19:33,958 INFO L93 Difference]: Finished difference Result 16990 states and 28076 transitions. [2022-11-23 15:19:33,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:19:33,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 85 [2022-11-23 15:19:33,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:19:34,050 INFO L225 Difference]: With dead ends: 16990 [2022-11-23 15:19:34,050 INFO L226 Difference]: Without dead ends: 11458 [2022-11-23 15:19:34,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:34,073 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 43 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:19:34,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 405 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:19:34,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11458 states. [2022-11-23 15:19:35,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11458 to 11453. [2022-11-23 15:19:35,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11453 states, 8662 states have (on average 1.5200877395520664) internal successors, (13167), 8665 states have internal predecessors, (13167), 2771 states have call successors, (2771), 19 states have call predecessors, (2771), 19 states have return successors, (2770), 2770 states have call predecessors, (2770), 2770 states have call successors, (2770) [2022-11-23 15:19:35,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11453 states to 11453 states and 18708 transitions. [2022-11-23 15:19:35,118 INFO L78 Accepts]: Start accepts. Automaton has 11453 states and 18708 transitions. Word has length 85 [2022-11-23 15:19:35,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:19:35,119 INFO L495 AbstractCegarLoop]: Abstraction has 11453 states and 18708 transitions. [2022-11-23 15:19:35,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:19:35,120 INFO L276 IsEmpty]: Start isEmpty. Operand 11453 states and 18708 transitions. [2022-11-23 15:19:35,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-23 15:19:35,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:35,144 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:19:35,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 15:19:35,145 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:19:35,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:35,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1880309884, now seen corresponding path program 1 times [2022-11-23 15:19:35,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:19:35,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049229944] [2022-11-23 15:19:35,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:35,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:19:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:19:35,234 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:19:35,234 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:19:35,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049229944] [2022-11-23 15:19:35,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049229944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:19:35,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:19:35,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:19:35,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868853227] [2022-11-23 15:19:35,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:19:35,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:19:35,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:19:35,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:19:35,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:35,236 INFO L87 Difference]: Start difference. First operand 11453 states and 18708 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:19:36,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:19:36,706 INFO L93 Difference]: Finished difference Result 30309 states and 49842 transitions. [2022-11-23 15:19:36,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:19:36,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 86 [2022-11-23 15:19:36,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:19:36,804 INFO L225 Difference]: With dead ends: 30309 [2022-11-23 15:19:36,804 INFO L226 Difference]: Without dead ends: 20285 [2022-11-23 15:19:36,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:36,842 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 41 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:19:36,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 393 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:19:36,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20285 states. [2022-11-23 15:19:38,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20285 to 20280. [2022-11-23 15:19:38,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20280 states, 15450 states have (on average 1.5123624595469256) internal successors, (23366), 15453 states have internal predecessors, (23366), 4810 states have call successors, (4810), 19 states have call predecessors, (4810), 19 states have return successors, (4809), 4809 states have call predecessors, (4809), 4809 states have call successors, (4809) [2022-11-23 15:19:38,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20280 states to 20280 states and 32985 transitions. [2022-11-23 15:19:38,711 INFO L78 Accepts]: Start accepts. Automaton has 20280 states and 32985 transitions. Word has length 86 [2022-11-23 15:19:38,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:19:38,713 INFO L495 AbstractCegarLoop]: Abstraction has 20280 states and 32985 transitions. [2022-11-23 15:19:38,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:19:38,713 INFO L276 IsEmpty]: Start isEmpty. Operand 20280 states and 32985 transitions. [2022-11-23 15:19:38,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-23 15:19:38,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:38,735 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:19:38,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 15:19:38,735 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:19:38,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:38,737 INFO L85 PathProgramCache]: Analyzing trace with hash 165662749, now seen corresponding path program 1 times [2022-11-23 15:19:38,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:19:38,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910365561] [2022-11-23 15:19:38,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:38,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:19:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:19:38,845 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:19:38,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:19:38,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910365561] [2022-11-23 15:19:38,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910365561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:19:38,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:19:38,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:19:38,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856173845] [2022-11-23 15:19:38,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:19:38,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:19:38,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:19:38,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:19:38,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:38,849 INFO L87 Difference]: Start difference. First operand 20280 states and 32985 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:19:41,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:19:41,205 INFO L93 Difference]: Finished difference Result 55021 states and 89934 transitions. [2022-11-23 15:19:41,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:19:41,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 87 [2022-11-23 15:19:41,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:19:41,369 INFO L225 Difference]: With dead ends: 55021 [2022-11-23 15:19:41,369 INFO L226 Difference]: Without dead ends: 36725 [2022-11-23 15:19:41,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:41,431 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 39 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:19:41,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 393 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:19:41,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36725 states. [2022-11-23 15:19:44,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36725 to 36720. [2022-11-23 15:19:44,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36720 states, 28175 states have (on average 1.5016858917480036) internal successors, (42310), 28178 states have internal predecessors, (42310), 8525 states have call successors, (8525), 19 states have call predecessors, (8525), 19 states have return successors, (8524), 8524 states have call predecessors, (8524), 8524 states have call successors, (8524) [2022-11-23 15:19:44,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36720 states to 36720 states and 59359 transitions. [2022-11-23 15:19:44,802 INFO L78 Accepts]: Start accepts. Automaton has 36720 states and 59359 transitions. Word has length 87 [2022-11-23 15:19:44,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:19:44,803 INFO L495 AbstractCegarLoop]: Abstraction has 36720 states and 59359 transitions. [2022-11-23 15:19:44,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:19:44,803 INFO L276 IsEmpty]: Start isEmpty. Operand 36720 states and 59359 transitions. [2022-11-23 15:19:44,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-23 15:19:44,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:44,833 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:19:44,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 15:19:44,834 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:19:44,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:44,835 INFO L85 PathProgramCache]: Analyzing trace with hash 739736316, now seen corresponding path program 1 times [2022-11-23 15:19:44,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:19:44,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673464801] [2022-11-23 15:19:44,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:44,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:19:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:19:44,934 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:19:44,934 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:19:44,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673464801] [2022-11-23 15:19:44,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673464801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:19:44,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:19:44,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:19:44,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966955038] [2022-11-23 15:19:44,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:19:44,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:19:44,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:19:44,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:19:44,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:44,939 INFO L87 Difference]: Start difference. First operand 36720 states and 59359 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:19:49,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:19:49,263 INFO L93 Difference]: Finished difference Result 67638 states and 109515 transitions. [2022-11-23 15:19:49,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:19:49,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 88 [2022-11-23 15:19:49,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:19:49,588 INFO L225 Difference]: With dead ends: 67638 [2022-11-23 15:19:49,588 INFO L226 Difference]: Without dead ends: 67553 [2022-11-23 15:19:49,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:49,623 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 37 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:19:49,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 393 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:19:49,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67553 states. [2022-11-23 15:19:53,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67553 to 67548. [2022-11-23 15:19:54,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67548 states, 52204 states have (on average 1.4877404030342503) internal successors, (77666), 52207 states have internal predecessors, (77666), 15324 states have call successors, (15324), 19 states have call predecessors, (15324), 19 states have return successors, (15323), 15323 states have call predecessors, (15323), 15323 states have call successors, (15323) [2022-11-23 15:19:54,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67548 states to 67548 states and 108313 transitions. [2022-11-23 15:19:54,262 INFO L78 Accepts]: Start accepts. Automaton has 67548 states and 108313 transitions. Word has length 88 [2022-11-23 15:19:54,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:19:54,263 INFO L495 AbstractCegarLoop]: Abstraction has 67548 states and 108313 transitions. [2022-11-23 15:19:54,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:19:54,263 INFO L276 IsEmpty]: Start isEmpty. Operand 67548 states and 108313 transitions. [2022-11-23 15:19:54,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-23 15:19:54,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:54,293 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:19:54,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 15:19:54,294 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:19:54,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:54,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1966460604, now seen corresponding path program 1 times [2022-11-23 15:19:54,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:19:54,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225240824] [2022-11-23 15:19:54,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:54,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:19:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:19:56,406 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 15:19:56,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:19:56,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225240824] [2022-11-23 15:19:56,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225240824] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:19:56,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907901075] [2022-11-23 15:19:56,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:56,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:19:56,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64b5006-64de-48e8-9706-a4af3aa90fc4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:19:56,409 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64b5006-64de-48e8-9706-a4af3aa90fc4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:19:56,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64b5006-64de-48e8-9706-a4af3aa90fc4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:19:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:19:56,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 82 conjunts are in the unsatisfiable core [2022-11-23 15:19:57,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:19:58,283 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 15:19:58,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:19:58,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907901075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:19:58,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:19:58,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [21] total 37 [2022-11-23 15:19:58,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442511764] [2022-11-23 15:19:58,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:19:58,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 15:19:58,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:19:58,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 15:19:58,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1228, Unknown=0, NotChecked=0, Total=1332 [2022-11-23 15:19:58,291 INFO L87 Difference]: Start difference. First operand 67548 states and 108313 transitions. Second operand has 18 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 8 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-23 15:20:06,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:20:06,131 INFO L93 Difference]: Finished difference Result 100750 states and 161320 transitions. [2022-11-23 15:20:06,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-23 15:20:06,132 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 8 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) Word has length 89 [2022-11-23 15:20:06,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:20:06,747 INFO L225 Difference]: With dead ends: 100750 [2022-11-23 15:20:06,747 INFO L226 Difference]: Without dead ends: 100619 [2022-11-23 15:20:06,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=267, Invalid=2595, Unknown=0, NotChecked=0, Total=2862 [2022-11-23 15:20:06,788 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 449 mSDsluCounter, 2594 mSDsCounter, 0 mSdLazyCounter, 2417 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 2854 SdHoareTripleChecker+Invalid, 2593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 2417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:20:06,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 2854 Invalid, 2593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 2417 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-23 15:20:06,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100619 states.