./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product11.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product11.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0a22b5b7c3f7f6e8ff7182918ba517a92e8c6204e4a486ab05fe09fb2404c376 --- 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-dbf71c6-m [2022-10-17 10:17:34,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:17:34,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:17:34,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:17:34,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:17:34,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:17:34,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:17:34,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:17:34,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:17:34,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:17:34,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:17:34,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:17:34,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:17:34,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:17:34,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:17:34,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:17:34,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:17:34,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:17:34,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:17:34,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:17:34,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:17:34,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:17:34,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:17:34,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:17:34,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:17:34,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:17:34,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:17:34,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:17:34,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:17:34,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:17:34,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:17:34,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:17:34,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:17:34,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:17:34,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:17:34,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:17:34,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:17:34,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:17:34,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:17:34,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:17:34,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:17:34,146 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:17:34,180 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:17:34,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:17:34,185 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:17:34,185 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:17:34,186 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:17:34,187 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:17:34,188 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:17:34,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:17:34,189 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:17:34,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:17:34,191 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:17:34,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:17:34,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:17:34,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:17:34,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:17:34,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:17:34,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:17:34,193 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:17:34,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:17:34,194 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:17:34,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:17:34,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:17:34,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:17:34,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:17:34,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:17:34,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:17:34,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:17:34,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:17:34,198 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:17:34,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:17:34,199 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:17:34,199 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:17:34,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:17:34,200 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_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a22b5b7c3f7f6e8ff7182918ba517a92e8c6204e4a486ab05fe09fb2404c376 [2022-10-17 10:17:34,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:17:34,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:17:34,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:17:34,520 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:17:34,521 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:17:34,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/product-lines/email_spec0_product11.cil.c [2022-10-17 10:17:34,585 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/data/fac73e027/2ce92bb9ea2544cabedf85a2de421df2/FLAGe9fb280af [2022-10-17 10:17:35,165 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:17:35,166 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/sv-benchmarks/c/product-lines/email_spec0_product11.cil.c [2022-10-17 10:17:35,194 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/data/fac73e027/2ce92bb9ea2544cabedf85a2de421df2/FLAGe9fb280af [2022-10-17 10:17:35,389 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/data/fac73e027/2ce92bb9ea2544cabedf85a2de421df2 [2022-10-17 10:17:35,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:17:35,392 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:17:35,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:17:35,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:17:35,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:17:35,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:17:35" (1/1) ... [2022-10-17 10:17:35,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ff7bf51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:35, skipping insertion in model container [2022-10-17 10:17:35,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:17:35" (1/1) ... [2022-10-17 10:17:35,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:17:35,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:17:36,080 WARN L230 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_0a9dde07-18de-4649-aa42-ff2024766830/sv-benchmarks/c/product-lines/email_spec0_product11.cil.c[59717,59730] [2022-10-17 10:17:36,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:17:36,098 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:17:36,240 WARN L230 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_0a9dde07-18de-4649-aa42-ff2024766830/sv-benchmarks/c/product-lines/email_spec0_product11.cil.c[59717,59730] [2022-10-17 10:17:36,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:17:36,287 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:17:36,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:36 WrapperNode [2022-10-17 10:17:36,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:17:36,289 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:17:36,290 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:17:36,290 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:17:36,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:36" (1/1) ... [2022-10-17 10:17:36,332 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:36" (1/1) ... [2022-10-17 10:17:36,415 INFO L138 Inliner]: procedures = 121, calls = 176, calls flagged for inlining = 48, calls inlined = 43, statements flattened = 792 [2022-10-17 10:17:36,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:17:36,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:17:36,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:17:36,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:17:36,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:36" (1/1) ... [2022-10-17 10:17:36,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:36" (1/1) ... [2022-10-17 10:17:36,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:36" (1/1) ... [2022-10-17 10:17:36,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:36" (1/1) ... [2022-10-17 10:17:36,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:36" (1/1) ... [2022-10-17 10:17:36,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:36" (1/1) ... [2022-10-17 10:17:36,479 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:36" (1/1) ... [2022-10-17 10:17:36,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:36" (1/1) ... [2022-10-17 10:17:36,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:17:36,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:17:36,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:17:36,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:17:36,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:36" (1/1) ... [2022-10-17 10:17:36,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:17:36,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:17:36,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:17:36,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:17:36,585 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-10-17 10:17:36,586 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-10-17 10:17:36,586 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-10-17 10:17:36,586 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-10-17 10:17:36,586 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-10-17 10:17:36,587 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-10-17 10:17:36,587 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-10-17 10:17:36,587 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-10-17 10:17:36,587 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-10-17 10:17:36,587 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-10-17 10:17:36,587 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-10-17 10:17:36,588 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-10-17 10:17:36,588 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-10-17 10:17:36,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:17:36,588 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-10-17 10:17:36,588 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-10-17 10:17:36,588 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-10-17 10:17:36,589 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-10-17 10:17:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-10-17 10:17:36,589 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-10-17 10:17:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-10-17 10:17:36,589 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-10-17 10:17:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-10-17 10:17:36,590 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-10-17 10:17:36,590 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-10-17 10:17:36,590 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-10-17 10:17:36,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:17:36,590 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-10-17 10:17:36,590 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-10-17 10:17:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:17:36,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:17:36,801 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:17:36,804 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:17:37,678 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:17:37,694 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:17:37,695 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:17:37,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:17:37 BoogieIcfgContainer [2022-10-17 10:17:37,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:17:37,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:17:37,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:17:37,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:17:37,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:17:35" (1/3) ... [2022-10-17 10:17:37,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b6146a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:17:37, skipping insertion in model container [2022-10-17 10:17:37,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:36" (2/3) ... [2022-10-17 10:17:37,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b6146a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:17:37, skipping insertion in model container [2022-10-17 10:17:37,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:17:37" (3/3) ... [2022-10-17 10:17:37,716 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product11.cil.c [2022-10-17 10:17:37,741 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:17:37,741 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:17:37,835 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:17:37,845 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@49cc696a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:17:37,846 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:17:37,862 INFO L276 IsEmpty]: Start isEmpty. Operand has 235 states, 185 states have (on average 1.5297297297297296) internal successors, (283), 187 states have internal predecessors, (283), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-10-17 10:17:37,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-10-17 10:17:37,904 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:17:37,905 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:37,906 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:17:37,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:37,915 INFO L85 PathProgramCache]: Analyzing trace with hash 911816680, now seen corresponding path program 1 times [2022-10-17 10:17:37,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:37,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563587709] [2022-10-17 10:17:37,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:37,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:38,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:17:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:38,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:17:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:38,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:17:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:38,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 10:17:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:38,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 10:17:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:38,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 10:17:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:38,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-17 10:17:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:38,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-17 10:17:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:38,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-17 10:17:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:38,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-17 10:17:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:38,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-17 10:17:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:38,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-17 10:17:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:38,743 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-17 10:17:38,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:38,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563587709] [2022-10-17 10:17:38,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563587709] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:17:38,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660254889] [2022-10-17 10:17:38,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:38,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:17:38,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:17:38,754 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:17:38,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:17:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:39,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 10:17:39,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:17:39,154 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-10-17 10:17:39,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:17:39,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660254889] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:39,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:17:39,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-10-17 10:17:39,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694727004] [2022-10-17 10:17:39,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:39,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:17:39,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:39,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:17:39,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:17:39,194 INFO L87 Difference]: Start difference. First operand has 235 states, 185 states have (on average 1.5297297297297296) internal successors, (283), 187 states have internal predecessors, (283), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-17 10:17:39,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:17:39,240 INFO L93 Difference]: Finished difference Result 316 states and 460 transitions. [2022-10-17 10:17:39,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:17:39,249 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 93 [2022-10-17 10:17:39,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:17:39,263 INFO L225 Difference]: With dead ends: 316 [2022-10-17 10:17:39,263 INFO L226 Difference]: Without dead ends: 228 [2022-10-17 10:17:39,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:17:39,271 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:17:39,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:17:39,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-10-17 10:17:39,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2022-10-17 10:17:39,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 179 states have (on average 1.5195530726256983) internal successors, (272), 180 states have internal predecessors, (272), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-10-17 10:17:39,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 341 transitions. [2022-10-17 10:17:39,342 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 341 transitions. Word has length 93 [2022-10-17 10:17:39,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:17:39,343 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 341 transitions. [2022-10-17 10:17:39,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-17 10:17:39,344 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 341 transitions. [2022-10-17 10:17:39,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-10-17 10:17:39,355 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:17:39,355 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:39,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:17:39,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-10-17 10:17:39,559 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:17:39,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:39,560 INFO L85 PathProgramCache]: Analyzing trace with hash -124046123, now seen corresponding path program 1 times [2022-10-17 10:17:39,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:39,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145744304] [2022-10-17 10:17:39,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:39,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:39,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:17:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:39,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:17:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:39,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:17:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:39,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 10:17:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:39,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 10:17:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:39,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 10:17:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:39,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-17 10:17:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:39,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 10:17:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:39,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-17 10:17:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:39,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-10-17 10:17:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:39,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-10-17 10:17:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:39,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-17 10:17:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:39,933 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-17 10:17:39,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:39,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145744304] [2022-10-17 10:17:39,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145744304] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:17:39,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317761807] [2022-10-17 10:17:39,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:39,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:17:39,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:17:39,936 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:17:39,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:17:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:40,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 933 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:17:40,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:17:40,290 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-10-17 10:17:40,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:17:40,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317761807] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:40,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:17:40,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-10-17 10:17:40,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558529921] [2022-10-17 10:17:40,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:40,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:17:40,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:40,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:17:40,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:17:40,299 INFO L87 Difference]: Start difference. First operand 228 states and 341 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-17 10:17:40,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:17:40,362 INFO L93 Difference]: Finished difference Result 306 states and 441 transitions. [2022-10-17 10:17:40,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:17:40,363 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 94 [2022-10-17 10:17:40,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:17:40,375 INFO L225 Difference]: With dead ends: 306 [2022-10-17 10:17:40,379 INFO L226 Difference]: Without dead ends: 231 [2022-10-17 10:17:40,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:17:40,384 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 1 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:17:40,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 676 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:17:40,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-10-17 10:17:40,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 230. [2022-10-17 10:17:40,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 181 states have (on average 1.5138121546961325) internal successors, (274), 182 states have internal predecessors, (274), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-10-17 10:17:40,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 343 transitions. [2022-10-17 10:17:40,438 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 343 transitions. Word has length 94 [2022-10-17 10:17:40,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:17:40,442 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 343 transitions. [2022-10-17 10:17:40,443 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-17 10:17:40,443 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 343 transitions. [2022-10-17 10:17:40,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-10-17 10:17:40,451 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:17:40,451 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:40,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:17:40,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:17:40,669 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:17:40,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:40,670 INFO L85 PathProgramCache]: Analyzing trace with hash -176780130, now seen corresponding path program 1 times [2022-10-17 10:17:40,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:40,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828207344] [2022-10-17 10:17:40,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:40,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:40,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:17:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:40,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:17:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:40,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:17:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:40,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 10:17:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:40,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 10:17:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:40,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 10:17:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:41,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-10-17 10:17:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:41,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-17 10:17:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:41,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-10-17 10:17:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:41,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-10-17 10:17:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:41,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-17 10:17:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:41,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-10-17 10:17:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:41,056 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-17 10:17:41,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:41,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828207344] [2022-10-17 10:17:41,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828207344] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:17:41,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245500821] [2022-10-17 10:17:41,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:41,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:17:41,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:17:41,073 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:17:41,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:17:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:41,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:17:41,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:17:41,395 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-10-17 10:17:41,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:17:41,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245500821] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:41,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:17:41,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-10-17 10:17:41,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037742869] [2022-10-17 10:17:41,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:41,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:17:41,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:41,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:17:41,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:17:41,401 INFO L87 Difference]: Start difference. First operand 230 states and 343 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-17 10:17:41,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:17:41,453 INFO L93 Difference]: Finished difference Result 490 states and 745 transitions. [2022-10-17 10:17:41,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:17:41,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 100 [2022-10-17 10:17:41,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:17:41,461 INFO L225 Difference]: With dead ends: 490 [2022-10-17 10:17:41,461 INFO L226 Difference]: Without dead ends: 287 [2022-10-17 10:17:41,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:17:41,470 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 107 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:17:41,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 649 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:17:41,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-10-17 10:17:41,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 279. [2022-10-17 10:17:41,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 219 states have (on average 1.5342465753424657) internal successors, (336), 220 states have internal predecessors, (336), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-10-17 10:17:41,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 427 transitions. [2022-10-17 10:17:41,532 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 427 transitions. Word has length 100 [2022-10-17 10:17:41,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:17:41,533 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 427 transitions. [2022-10-17 10:17:41,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-17 10:17:41,534 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 427 transitions. [2022-10-17 10:17:41,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-10-17 10:17:41,538 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:17:41,539 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:41,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:17:41,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-10-17 10:17:41,755 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:17:41,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:41,756 INFO L85 PathProgramCache]: Analyzing trace with hash -940882321, now seen corresponding path program 1 times [2022-10-17 10:17:41,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:41,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330138374] [2022-10-17 10:17:41,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:41,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:41,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:17:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:41,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:17:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:41,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:17:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:41,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 10:17:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:41,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 10:17:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:42,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 10:17:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:42,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-10-17 10:17:42,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:42,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-17 10:17:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:42,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-17 10:17:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:42,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-17 10:17:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:42,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-17 10:17:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:42,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-10-17 10:17:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:42,072 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-17 10:17:42,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:42,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330138374] [2022-10-17 10:17:42,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330138374] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:17:42,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46052400] [2022-10-17 10:17:42,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:42,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:17:42,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:17:42,077 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:17:42,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:17:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:42,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:17:42,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:17:42,475 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-17 10:17:42,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:17:42,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46052400] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:42,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:17:42,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-10-17 10:17:42,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060278446] [2022-10-17 10:17:42,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:42,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:17:42,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:42,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:17:42,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:17:42,478 INFO L87 Difference]: Start difference. First operand 279 states and 427 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-10-17 10:17:42,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:17:42,572 INFO L93 Difference]: Finished difference Result 549 states and 844 transitions. [2022-10-17 10:17:42,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:17:42,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 101 [2022-10-17 10:17:42,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:17:42,578 INFO L225 Difference]: With dead ends: 549 [2022-10-17 10:17:42,578 INFO L226 Difference]: Without dead ends: 281 [2022-10-17 10:17:42,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:17:42,583 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 125 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:17:42,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1183 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:17:42,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-10-17 10:17:42,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2022-10-17 10:17:42,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 220 states have (on average 1.5318181818181817) internal successors, (337), 222 states have internal predecessors, (337), 46 states have call successors, (46), 13 states have call predecessors, (46), 14 states have return successors, (47), 45 states have call predecessors, (47), 45 states have call successors, (47) [2022-10-17 10:17:42,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 430 transitions. [2022-10-17 10:17:42,628 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 430 transitions. Word has length 101 [2022-10-17 10:17:42,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:17:42,632 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 430 transitions. [2022-10-17 10:17:42,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-10-17 10:17:42,632 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 430 transitions. [2022-10-17 10:17:42,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-10-17 10:17:42,636 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:17:42,636 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:42,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:17:42,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:17:42,853 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:17:42,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:42,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1655833212, now seen corresponding path program 1 times [2022-10-17 10:17:42,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:42,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998762933] [2022-10-17 10:17:42,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:42,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:43,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:17:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:43,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:17:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:43,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:17:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:43,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:17:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:43,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-10-17 10:17:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:43,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-17 10:17:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:43,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-17 10:17:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:43,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-17 10:17:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:43,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-17 10:17:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:43,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-10-17 10:17:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:43,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-17 10:17:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:43,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-10-17 10:17:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:43,217 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-17 10:17:43,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:43,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998762933] [2022-10-17 10:17:43,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998762933] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:17:43,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558731714] [2022-10-17 10:17:43,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:43,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:17:43,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:17:43,219 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:17:43,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 10:17:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:43,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:17:43,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:17:43,572 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-17 10:17:43,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:17:43,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558731714] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:43,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:17:43,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-10-17 10:17:43,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530103206] [2022-10-17 10:17:43,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:43,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:17:43,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:43,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:17:43,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:17:43,576 INFO L87 Difference]: Start difference. First operand 281 states and 430 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-10-17 10:17:43,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:17:43,668 INFO L93 Difference]: Finished difference Result 551 states and 849 transitions. [2022-10-17 10:17:43,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:17:43,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 102 [2022-10-17 10:17:43,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:17:43,674 INFO L225 Difference]: With dead ends: 551 [2022-10-17 10:17:43,674 INFO L226 Difference]: Without dead ends: 283 [2022-10-17 10:17:43,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:17:43,676 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 124 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:17:43,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1172 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:17:43,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-10-17 10:17:43,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2022-10-17 10:17:43,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 221 states have (on average 1.5294117647058822) internal successors, (338), 224 states have internal predecessors, (338), 46 states have call successors, (46), 13 states have call predecessors, (46), 15 states have return successors, (52), 45 states have call predecessors, (52), 45 states have call successors, (52) [2022-10-17 10:17:43,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 436 transitions. [2022-10-17 10:17:43,707 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 436 transitions. Word has length 102 [2022-10-17 10:17:43,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:17:43,709 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 436 transitions. [2022-10-17 10:17:43,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-10-17 10:17:43,710 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 436 transitions. [2022-10-17 10:17:43,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-10-17 10:17:43,713 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:17:43,713 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:43,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-10-17 10:17:43,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:17:43,933 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:17:43,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:43,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1009009219, now seen corresponding path program 1 times [2022-10-17 10:17:43,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:43,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924980395] [2022-10-17 10:17:43,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:43,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:44,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:17:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:44,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:17:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:44,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:17:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:44,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:17:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:44,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:17:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:44,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-17 10:17:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:44,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-10-17 10:17:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:44,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-17 10:17:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:44,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-10-17 10:17:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:44,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-10-17 10:17:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:44,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-10-17 10:17:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:44,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-10-17 10:17:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:44,203 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-17 10:17:44,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:44,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924980395] [2022-10-17 10:17:44,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924980395] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:44,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:44,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:17:44,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343577735] [2022-10-17 10:17:44,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:44,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:17:44,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:44,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:17:44,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:17:44,206 INFO L87 Difference]: Start difference. First operand 283 states and 436 transitions. Second operand has 9 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-10-17 10:17:45,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:17:45,929 INFO L93 Difference]: Finished difference Result 652 states and 1003 transitions. [2022-10-17 10:17:45,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:17:45,930 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 103 [2022-10-17 10:17:45,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:17:45,935 INFO L225 Difference]: With dead ends: 652 [2022-10-17 10:17:45,935 INFO L226 Difference]: Without dead ends: 392 [2022-10-17 10:17:45,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-10-17 10:17:45,937 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 704 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:17:45,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1237 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-17 10:17:45,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-10-17 10:17:45,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 283. [2022-10-17 10:17:45,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 221 states have (on average 1.5294117647058822) internal successors, (338), 224 states have internal predecessors, (338), 46 states have call successors, (46), 13 states have call predecessors, (46), 15 states have return successors, (51), 45 states have call predecessors, (51), 45 states have call successors, (51) [2022-10-17 10:17:45,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 435 transitions. [2022-10-17 10:17:45,985 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 435 transitions. Word has length 103 [2022-10-17 10:17:45,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:17:45,985 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 435 transitions. [2022-10-17 10:17:45,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-10-17 10:17:45,986 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 435 transitions. [2022-10-17 10:17:45,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-10-17 10:17:45,989 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:17:45,989 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:45,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:17:45,990 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:17:45,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:45,990 INFO L85 PathProgramCache]: Analyzing trace with hash -516089808, now seen corresponding path program 2 times [2022-10-17 10:17:45,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:45,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195080472] [2022-10-17 10:17:45,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:45,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:46,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:17:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:46,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:17:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:46,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:17:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:46,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:17:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:46,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:17:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:46,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-17 10:17:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:46,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-10-17 10:17:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:46,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-17 10:17:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:46,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-10-17 10:17:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:46,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-17 10:17:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:46,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-10-17 10:17:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:46,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-10-17 10:17:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:46,263 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-17 10:17:46,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:46,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195080472] [2022-10-17 10:17:46,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195080472] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:46,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:46,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:17:46,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698360424] [2022-10-17 10:17:46,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:46,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:17:46,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:46,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:17:46,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:17:46,267 INFO L87 Difference]: Start difference. First operand 283 states and 435 transitions. Second operand has 9 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-10-17 10:17:47,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:17:47,784 INFO L93 Difference]: Finished difference Result 654 states and 1006 transitions. [2022-10-17 10:17:47,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:17:47,785 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 104 [2022-10-17 10:17:47,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:17:47,791 INFO L225 Difference]: With dead ends: 654 [2022-10-17 10:17:47,791 INFO L226 Difference]: Without dead ends: 394 [2022-10-17 10:17:47,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-10-17 10:17:47,793 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 697 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:17:47,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 1240 Invalid, 1609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-17 10:17:47,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-10-17 10:17:47,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 285. [2022-10-17 10:17:47,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 222 states have (on average 1.527027027027027) internal successors, (339), 226 states have internal predecessors, (339), 46 states have call successors, (46), 13 states have call predecessors, (46), 16 states have return successors, (53), 45 states have call predecessors, (53), 45 states have call successors, (53) [2022-10-17 10:17:47,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 438 transitions. [2022-10-17 10:17:47,840 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 438 transitions. Word has length 104 [2022-10-17 10:17:47,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:17:47,840 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 438 transitions. [2022-10-17 10:17:47,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-10-17 10:17:47,841 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 438 transitions. [2022-10-17 10:17:47,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-10-17 10:17:47,843 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:17:47,844 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:47,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:17:47,844 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:17:47,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:47,845 INFO L85 PathProgramCache]: Analyzing trace with hash 647944610, now seen corresponding path program 1 times [2022-10-17 10:17:47,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:47,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214904427] [2022-10-17 10:17:47,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:47,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:48,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:17:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:48,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:17:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:48,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:17:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:48,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:17:48,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:48,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:17:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:48,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-17 10:17:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:48,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-17 10:17:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:48,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-17 10:17:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:48,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-10-17 10:17:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:48,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-10-17 10:17:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:48,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-17 10:17:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:48,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-10-17 10:17:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:48,164 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-17 10:17:48,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:48,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214904427] [2022-10-17 10:17:48,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214904427] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:48,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:48,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-10-17 10:17:48,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574880687] [2022-10-17 10:17:48,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:48,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 10:17:48,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:48,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 10:17:48,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:17:48,167 INFO L87 Difference]: Start difference. First operand 285 states and 438 transitions. Second operand has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-10-17 10:17:50,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:17:50,275 INFO L93 Difference]: Finished difference Result 652 states and 1001 transitions. [2022-10-17 10:17:50,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:17:50,276 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 105 [2022-10-17 10:17:50,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:17:50,280 INFO L225 Difference]: With dead ends: 652 [2022-10-17 10:17:50,280 INFO L226 Difference]: Without dead ends: 394 [2022-10-17 10:17:50,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-10-17 10:17:50,283 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 810 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 2682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:17:50,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 1536 Invalid, 2682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 2369 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-10-17 10:17:50,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-10-17 10:17:50,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 285. [2022-10-17 10:17:50,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 222 states have (on average 1.527027027027027) internal successors, (339), 226 states have internal predecessors, (339), 46 states have call successors, (46), 13 states have call predecessors, (46), 16 states have return successors, (52), 45 states have call predecessors, (52), 45 states have call successors, (52) [2022-10-17 10:17:50,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 437 transitions. [2022-10-17 10:17:50,332 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 437 transitions. Word has length 105 [2022-10-17 10:17:50,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:17:50,332 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 437 transitions. [2022-10-17 10:17:50,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-10-17 10:17:50,333 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 437 transitions. [2022-10-17 10:17:50,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-10-17 10:17:50,335 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:17:50,335 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:50,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:17:50,336 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:17:50,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:50,336 INFO L85 PathProgramCache]: Analyzing trace with hash -2013521067, now seen corresponding path program 2 times [2022-10-17 10:17:50,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:50,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789923493] [2022-10-17 10:17:50,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:50,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:50,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:17:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:50,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:17:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:50,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:17:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:50,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:17:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:50,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:17:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:50,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-17 10:17:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:50,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-17 10:17:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:50,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-10-17 10:17:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:50,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-10-17 10:17:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:50,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-10-17 10:17:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:50,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-10-17 10:17:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:50,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-10-17 10:17:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:50,672 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-17 10:17:50,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:50,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789923493] [2022-10-17 10:17:50,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789923493] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:50,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:50,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-10-17 10:17:50,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297875477] [2022-10-17 10:17:50,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:50,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 10:17:50,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:50,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 10:17:50,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:17:50,675 INFO L87 Difference]: Start difference. First operand 285 states and 437 transitions. Second operand has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-10-17 10:17:52,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:17:52,735 INFO L93 Difference]: Finished difference Result 654 states and 1007 transitions. [2022-10-17 10:17:52,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:17:52,736 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 106 [2022-10-17 10:17:52,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:17:52,740 INFO L225 Difference]: With dead ends: 654 [2022-10-17 10:17:52,740 INFO L226 Difference]: Without dead ends: 396 [2022-10-17 10:17:52,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-10-17 10:17:52,743 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 803 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 2417 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 2723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 2417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:17:52,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 1539 Invalid, 2723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 2417 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-10-17 10:17:52,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-10-17 10:17:52,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 287. [2022-10-17 10:17:52,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 223 states have (on average 1.5246636771300448) internal successors, (340), 228 states have internal predecessors, (340), 46 states have call successors, (46), 13 states have call predecessors, (46), 17 states have return successors, (57), 45 states have call predecessors, (57), 45 states have call successors, (57) [2022-10-17 10:17:52,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 443 transitions. [2022-10-17 10:17:52,781 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 443 transitions. Word has length 106 [2022-10-17 10:17:52,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:17:52,782 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 443 transitions. [2022-10-17 10:17:52,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-10-17 10:17:52,782 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 443 transitions. [2022-10-17 10:17:52,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-10-17 10:17:52,784 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:17:52,785 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:52,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:17:52,785 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:17:52,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:52,786 INFO L85 PathProgramCache]: Analyzing trace with hash 336897351, now seen corresponding path program 1 times [2022-10-17 10:17:52,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:52,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835799882] [2022-10-17 10:17:52,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:52,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:52,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:17:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:52,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:17:52,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:52,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:17:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:52,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:17:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:52,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:17:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:52,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-17 10:17:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:52,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-17 10:17:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:52,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-10-17 10:17:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:52,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-17 10:17:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:52,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-10-17 10:17:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:52,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-10-17 10:17:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:52,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-10-17 10:17:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:52,962 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-10-17 10:17:52,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:52,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835799882] [2022-10-17 10:17:52,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835799882] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:17:52,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681887151] [2022-10-17 10:17:52,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:52,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:17:52,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:17:52,968 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:17:52,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 10:17:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:53,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:17:53,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:17:53,258 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-10-17 10:17:53,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:17:53,357 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-10-17 10:17:53,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681887151] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:17:53,357 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:17:53,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2022-10-17 10:17:53,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36737541] [2022-10-17 10:17:53,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:17:53,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 10:17:53,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:53,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 10:17:53,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:17:53,363 INFO L87 Difference]: Start difference. First operand 287 states and 443 transitions. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 7 states have internal predecessors, (94), 2 states have call successors, (30), 6 states have call predecessors, (30), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-10-17 10:17:55,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:17:55,301 INFO L93 Difference]: Finished difference Result 823 states and 1335 transitions. [2022-10-17 10:17:55,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 10:17:55,301 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 7 states have internal predecessors, (94), 2 states have call successors, (30), 6 states have call predecessors, (30), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 107 [2022-10-17 10:17:55,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:17:55,308 INFO L225 Difference]: With dead ends: 823 [2022-10-17 10:17:55,309 INFO L226 Difference]: Without dead ends: 748 [2022-10-17 10:17:55,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-10-17 10:17:55,311 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 1006 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 1742 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 2159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 1742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:17:55,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1051 Valid, 1649 Invalid, 2159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 1742 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-17 10:17:55,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2022-10-17 10:17:55,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 615. [2022-10-17 10:17:55,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 487 states have (on average 1.5975359342915811) internal successors, (778), 492 states have internal predecessors, (778), 110 states have call successors, (110), 13 states have call predecessors, (110), 17 states have return successors, (131), 109 states have call predecessors, (131), 109 states have call successors, (131) [2022-10-17 10:17:55,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 1019 transitions. [2022-10-17 10:17:55,403 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 1019 transitions. Word has length 107 [2022-10-17 10:17:55,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:17:55,403 INFO L495 AbstractCegarLoop]: Abstraction has 615 states and 1019 transitions. [2022-10-17 10:17:55,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 7 states have internal predecessors, (94), 2 states have call successors, (30), 6 states have call predecessors, (30), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-10-17 10:17:55,404 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 1019 transitions. [2022-10-17 10:17:55,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-10-17 10:17:55,408 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:17:55,409 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:55,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-17 10:17:55,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9dde07-18de-4649-aa42-ff2024766830/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:17:55,625 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:17:55,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:55,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1788465636, now seen corresponding path program 1 times [2022-10-17 10:17:55,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:55,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365632800] [2022-10-17 10:17:55,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:55,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:55,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:17:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:55,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:17:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:55,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:17:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:55,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:17:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:55,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:17:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:55,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-17 10:17:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:55,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-10-17 10:17:55,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:55,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-17 10:17:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:55,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-10-17 10:17:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:55,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-17 10:17:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:55,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-10-17 10:17:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:55,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-10-17 10:17:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:55,754 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-10-17 10:17:55,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:55,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365632800] [2022-10-17 10:17:55,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365632800] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:55,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:55,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:17:55,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444906489] [2022-10-17 10:17:55,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:55,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:17:55,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:55,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:17:55,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:17:55,757 INFO L87 Difference]: Start difference. First operand 615 states and 1019 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-17 10:17:56,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:17:56,999 INFO L93 Difference]: Finished difference Result 1604 states and 2706 transitions. [2022-10-17 10:17:57,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:17:57,000 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-10-17 10:17:57,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:17:57,009 INFO L225 Difference]: With dead ends: 1604 [2022-10-17 10:17:57,010 INFO L226 Difference]: Without dead ends: 1057 [2022-10-17 10:17:57,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:17:57,013 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 692 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:17:57,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [707 Valid, 1126 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-10-17 10:17:57,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2022-10-17 10:17:57,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 940. [2022-10-17 10:17:57,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 748 states have (on average 1.608288770053476) internal successors, (1203), 753 states have internal predecessors, (1203), 174 states have call successors, (174), 13 states have call predecessors, (174), 17 states have return successors, (205), 173 states have call predecessors, (205), 173 states have call successors, (205) [2022-10-17 10:17:57,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1582 transitions. [2022-10-17 10:17:57,162 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1582 transitions. Word has length 113 [2022-10-17 10:17:57,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:17:57,162 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1582 transitions. [2022-10-17 10:17:57,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-17 10:17:57,163 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1582 transitions. [2022-10-17 10:17:57,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-10-17 10:17:57,170 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:17:57,171 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:57,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 10:17:57,171 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:17:57,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:57,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1421409414, now seen corresponding path program 1 times [2022-10-17 10:17:57,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:57,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401047516] [2022-10-17 10:17:57,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:57,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:57,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:17:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:57,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:17:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:57,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:17:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:57,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:17:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:57,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:17:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:57,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-17 10:17:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:57,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-17 10:17:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:57,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-10-17 10:17:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:57,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-10-17 10:17:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:57,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-10-17 10:17:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:57,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-10-17 10:17:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:57,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-10-17 10:17:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:57,296 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-10-17 10:17:57,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:57,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401047516] [2022-10-17 10:17:57,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401047516] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:57,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:57,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:17:57,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741064734] [2022-10-17 10:17:57,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:57,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:17:57,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:57,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:17:57,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:17:57,298 INFO L87 Difference]: Start difference. First operand 940 states and 1582 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-17 10:17:58,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:17:58,468 INFO L93 Difference]: Finished difference Result 2384 states and 4055 transitions. [2022-10-17 10:17:58,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:17:58,468 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2022-10-17 10:17:58,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:17:58,482 INFO L225 Difference]: With dead ends: 2384 [2022-10-17 10:17:58,483 INFO L226 Difference]: Without dead ends: 1565 [2022-10-17 10:17:58,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:17:58,488 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 691 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:17:58,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 1083 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-17 10:17:58,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2022-10-17 10:17:58,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1448. [2022-10-17 10:17:58,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1161 states have (on average 1.6141257536606375) internal successors, (1874), 1166 states have internal predecessors, (1874), 269 states have call successors, (269), 13 states have call predecessors, (269), 17 states have return successors, (300), 268 states have call predecessors, (300), 268 states have call successors, (300) [2022-10-17 10:17:58,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 2443 transitions. [2022-10-17 10:17:58,652 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 2443 transitions. Word has length 114 [2022-10-17 10:17:58,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:17:58,653 INFO L495 AbstractCegarLoop]: Abstraction has 1448 states and 2443 transitions. [2022-10-17 10:17:58,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-17 10:17:58,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 2443 transitions. [2022-10-17 10:17:58,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-10-17 10:17:58,664 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:17:58,665 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:58,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-17 10:17:58,665 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:17:58,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:58,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1395731194, now seen corresponding path program 1 times [2022-10-17 10:17:58,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:58,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500990179] [2022-10-17 10:17:58,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:58,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:58,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:17:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:58,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:17:58,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:58,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:17:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:58,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:17:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:58,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:17:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:58,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-17 10:17:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:58,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-17 10:17:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:58,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-10-17 10:17:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:58,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-10-17 10:17:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:58,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-10-17 10:17:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:58,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-10-17 10:17:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:58,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-10-17 10:17:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:58,814 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-10-17 10:17:58,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:58,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500990179] [2022-10-17 10:17:58,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500990179] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:58,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:58,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:17:58,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72212518] [2022-10-17 10:17:58,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:58,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:17:58,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:58,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:17:58,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:17:58,817 INFO L87 Difference]: Start difference. First operand 1448 states and 2443 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-17 10:18:00,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:18:00,085 INFO L93 Difference]: Finished difference Result 3536 states and 6064 transitions. [2022-10-17 10:18:00,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:18:00,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2022-10-17 10:18:00,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:18:00,111 INFO L225 Difference]: With dead ends: 3536 [2022-10-17 10:18:00,111 INFO L226 Difference]: Without dead ends: 2334 [2022-10-17 10:18:00,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:18:00,119 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 689 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:18:00,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1081 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-17 10:18:00,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2334 states. [2022-10-17 10:18:00,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2334 to 2217. [2022-10-17 10:18:00,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2217 states, 1807 states have (on average 1.618705035971223) internal successors, (2925), 1812 states have internal predecessors, (2925), 392 states have call successors, (392), 13 states have call predecessors, (392), 17 states have return successors, (439), 391 states have call predecessors, (439), 391 states have call successors, (439) [2022-10-17 10:18:00,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 3756 transitions. [2022-10-17 10:18:00,413 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 3756 transitions. Word has length 115 [2022-10-17 10:18:00,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:18:00,413 INFO L495 AbstractCegarLoop]: Abstraction has 2217 states and 3756 transitions. [2022-10-17 10:18:00,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-17 10:18:00,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 3756 transitions. [2022-10-17 10:18:00,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-10-17 10:18:00,427 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:18:00,428 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:18:00,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-17 10:18:00,428 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:18:00,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:18:00,429 INFO L85 PathProgramCache]: Analyzing trace with hash 2030264231, now seen corresponding path program 1 times [2022-10-17 10:18:00,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:18:00,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577435574] [2022-10-17 10:18:00,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:18:00,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:18:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:00,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:18:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:00,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:18:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:00,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:18:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:00,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:18:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:00,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:18:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:00,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-17 10:18:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:00,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-10-17 10:18:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:00,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-10-17 10:18:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:00,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-17 10:18:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:00,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-17 10:18:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:00,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-10-17 10:18:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:00,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-10-17 10:18:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:00,559 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-10-17 10:18:00,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:18:00,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577435574] [2022-10-17 10:18:00,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577435574] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:18:00,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:18:00,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:18:00,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344695238] [2022-10-17 10:18:00,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:18:00,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:18:00,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:18:00,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:18:00,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:18:00,562 INFO L87 Difference]: Start difference. First operand 2217 states and 3756 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-17 10:18:02,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:18:02,010 INFO L93 Difference]: Finished difference Result 5330 states and 9198 transitions. [2022-10-17 10:18:02,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:18:02,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 116 [2022-10-17 10:18:02,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:18:02,041 INFO L225 Difference]: With dead ends: 5330 [2022-10-17 10:18:02,041 INFO L226 Difference]: Without dead ends: 3563 [2022-10-17 10:18:02,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:18:02,050 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 689 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:18:02,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 1082 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-10-17 10:18:02,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3563 states. [2022-10-17 10:18:02,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3563 to 3446. [2022-10-17 10:18:02,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3446 states, 2857 states have (on average 1.6212810640532027) internal successors, (4632), 2862 states have internal predecessors, (4632), 571 states have call successors, (571), 13 states have call predecessors, (571), 17 states have return successors, (644), 570 states have call predecessors, (644), 570 states have call successors, (644) [2022-10-17 10:18:02,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3446 states to 3446 states and 5847 transitions. [2022-10-17 10:18:02,554 INFO L78 Accepts]: Start accepts. Automaton has 3446 states and 5847 transitions. Word has length 116 [2022-10-17 10:18:02,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:18:02,555 INFO L495 AbstractCegarLoop]: Abstraction has 3446 states and 5847 transitions. [2022-10-17 10:18:02,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-17 10:18:02,555 INFO L276 IsEmpty]: Start isEmpty. Operand 3446 states and 5847 transitions. [2022-10-17 10:18:02,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-10-17 10:18:02,572 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:18:02,572 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:18:02,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-17 10:18:02,572 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:18:02,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:18:02,573 INFO L85 PathProgramCache]: Analyzing trace with hash -339692734, now seen corresponding path program 1 times [2022-10-17 10:18:02,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:18:02,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106450034] [2022-10-17 10:18:02,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:18:02,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:18:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:02,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:18:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:02,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:18:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:02,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:18:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:02,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:18:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:02,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:18:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:02,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-17 10:18:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:02,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-17 10:18:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:02,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-10-17 10:18:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:02,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-17 10:18:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:02,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-10-17 10:18:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:02,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-10-17 10:18:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:02,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-10-17 10:18:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:02,738 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-10-17 10:18:02,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:18:02,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106450034] [2022-10-17 10:18:02,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106450034] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:18:02,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:18:02,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:18:02,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145836173] [2022-10-17 10:18:02,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:18:02,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:18:02,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:18:02,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:18:02,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:18:02,741 INFO L87 Difference]: Start difference. First operand 3446 states and 5847 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12)