./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product35.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e6954a366a92a56976ad3f15dd01067d582436273e28a74386bd548c596ad28b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:06:37,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:06:37,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:06:38,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:06:38,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:06:38,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:06:38,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:06:38,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:06:38,041 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:06:38,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:06:38,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:06:38,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:06:38,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:06:38,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:06:38,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:06:38,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:06:38,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:06:38,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:06:38,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:06:38,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:06:38,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:06:38,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:06:38,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:06:38,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:06:38,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:06:38,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:06:38,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:06:38,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:06:38,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:06:38,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:06:38,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:06:38,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:06:38,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:06:38,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:06:38,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:06:38,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:06:38,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:06:38,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:06:38,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:06:38,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:06:38,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:06:38,104 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:06:38,148 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:06:38,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:06:38,150 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:06:38,150 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:06:38,151 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:06:38,151 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:06:38,152 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:06:38,152 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:06:38,152 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:06:38,152 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:06:38,153 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:06:38,154 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:06:38,154 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:06:38,154 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:06:38,155 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:06:38,155 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:06:38,155 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:06:38,155 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:06:38,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:06:38,156 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:06:38,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:06:38,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:06:38,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:06:38,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:06:38,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:06:38,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:06:38,158 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:06:38,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:06:38,158 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:06:38,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:06:38,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:06:38,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:06:38,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:06:38,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:06:38,160 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:06:38,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:06:38,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:06:38,161 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:06:38,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:06:38,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:06:38,162 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:06:38,162 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_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6954a366a92a56976ad3f15dd01067d582436273e28a74386bd548c596ad28b [2022-11-23 15:06:38,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:06:38,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:06:38,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:06:38,471 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:06:38,472 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:06:38,473 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/email_spec7_product35.cil.c [2022-11-23 15:06:41,469 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:06:41,846 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:06:41,847 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/sv-benchmarks/c/product-lines/email_spec7_product35.cil.c [2022-11-23 15:06:41,867 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/data/8ef38161d/e4ad24cfe57942c78789dfbe9e37b6be/FLAG07f7944ad [2022-11-23 15:06:41,880 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/data/8ef38161d/e4ad24cfe57942c78789dfbe9e37b6be [2022-11-23 15:06:41,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:06:41,884 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:06:41,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:06:41,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:06:41,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:06:41,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:06:41" (1/1) ... [2022-11-23 15:06:41,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e0ba5dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:41, skipping insertion in model container [2022-11-23 15:06:41,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:06:41" (1/1) ... [2022-11-23 15:06:41,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:06:41,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:06:42,605 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/sv-benchmarks/c/product-lines/email_spec7_product35.cil.c[48298,48311] [2022-11-23 15:06:42,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:06:42,738 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:06:42,852 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/sv-benchmarks/c/product-lines/email_spec7_product35.cil.c[48298,48311] [2022-11-23 15:06:42,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:06:42,957 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:06:42,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:42 WrapperNode [2022-11-23 15:06:42,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:06:42,959 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:06:42,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:06:42,960 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:06:42,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:42" (1/1) ... [2022-11-23 15:06:43,011 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:42" (1/1) ... [2022-11-23 15:06:43,088 INFO L138 Inliner]: procedures = 137, calls = 244, calls flagged for inlining = 66, calls inlined = 63, statements flattened = 1135 [2022-11-23 15:06:43,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:06:43,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:06:43,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:06:43,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:06:43,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:42" (1/1) ... [2022-11-23 15:06:43,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:42" (1/1) ... [2022-11-23 15:06:43,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:42" (1/1) ... [2022-11-23 15:06:43,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:42" (1/1) ... [2022-11-23 15:06:43,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:42" (1/1) ... [2022-11-23 15:06:43,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:42" (1/1) ... [2022-11-23 15:06:43,140 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:42" (1/1) ... [2022-11-23 15:06:43,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:42" (1/1) ... [2022-11-23 15:06:43,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:06:43,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:06:43,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:06:43,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:06:43,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:42" (1/1) ... [2022-11-23 15:06:43,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:06:43,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:06:43,193 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:06:43,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:06:43,264 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-23 15:06:43,265 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-23 15:06:43,265 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-23 15:06:43,265 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-23 15:06:43,266 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-23 15:06:43,266 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-23 15:06:43,266 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-23 15:06:43,266 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-23 15:06:43,266 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-23 15:06:43,267 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-23 15:06:43,267 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-23 15:06:43,267 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-23 15:06:43,267 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-23 15:06:43,267 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-23 15:06:43,268 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-23 15:06:43,268 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-23 15:06:43,268 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-23 15:06:43,268 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-23 15:06:43,269 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-23 15:06:43,269 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-23 15:06:43,269 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-23 15:06:43,270 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-23 15:06:43,270 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-23 15:06:43,271 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-23 15:06:43,271 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-23 15:06:43,272 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-23 15:06:43,272 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-23 15:06:43,272 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-23 15:06:43,273 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-23 15:06:43,273 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-23 15:06:43,274 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-23 15:06:43,275 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-23 15:06:43,275 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-23 15:06:43,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:06:43,276 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-23 15:06:43,276 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-23 15:06:43,276 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-23 15:06:43,276 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-23 15:06:43,276 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-23 15:06:43,277 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-23 15:06:43,277 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-23 15:06:43,277 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-23 15:06:43,278 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-23 15:06:43,278 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-23 15:06:43,278 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-23 15:06:43,278 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-23 15:06:43,279 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-23 15:06:43,279 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-23 15:06:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-23 15:06:43,281 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-23 15:06:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-23 15:06:43,281 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-23 15:06:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-23 15:06:43,282 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-23 15:06:43,282 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-23 15:06:43,282 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-23 15:06:43,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:06:43,283 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-23 15:06:43,283 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-23 15:06:43,283 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-23 15:06:43,283 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-23 15:06:43,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:06:43,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:06:43,553 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:06:43,555 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:06:44,865 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:06:45,640 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:06:45,641 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:06:45,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:06:45 BoogieIcfgContainer [2022-11-23 15:06:45,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:06:45,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:06:45,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:06:45,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:06:45,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:06:41" (1/3) ... [2022-11-23 15:06:45,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f9db0d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:06:45, skipping insertion in model container [2022-11-23 15:06:45,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:42" (2/3) ... [2022-11-23 15:06:45,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f9db0d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:06:45, skipping insertion in model container [2022-11-23 15:06:45,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:06:45" (3/3) ... [2022-11-23 15:06:45,653 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_product35.cil.c [2022-11-23 15:06:45,672 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:06:45,672 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:06:45,725 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:06:45,732 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1b3e0624, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:06:45,732 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:06:45,738 INFO L276 IsEmpty]: Start isEmpty. Operand has 239 states, 134 states have (on average 1.2835820895522387) internal successors, (172), 139 states have internal predecessors, (172), 74 states have call successors, (74), 29 states have call predecessors, (74), 29 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2022-11-23 15:06:45,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-23 15:06:45,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:06:45,753 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:06:45,753 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:06:45,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:06:45,759 INFO L85 PathProgramCache]: Analyzing trace with hash -599688769, now seen corresponding path program 1 times [2022-11-23 15:06:45,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:06:45,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510652758] [2022-11-23 15:06:45,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:45,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:06:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:06:46,158 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:06:46,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:06:46,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510652758] [2022-11-23 15:06:46,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510652758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:06:46,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:06:46,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:06:46,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942432353] [2022-11-23 15:06:46,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:06:46,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:06:46,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:06:46,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:06:46,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:06:46,197 INFO L87 Difference]: Start difference. First operand has 239 states, 134 states have (on average 1.2835820895522387) internal successors, (172), 139 states have internal predecessors, (172), 74 states have call successors, (74), 29 states have call predecessors, (74), 29 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 15:06:46,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:06:46,397 INFO L93 Difference]: Finished difference Result 386 states and 511 transitions. [2022-11-23 15:06:46,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:06:46,400 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 84 [2022-11-23 15:06:46,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:06:46,412 INFO L225 Difference]: With dead ends: 386 [2022-11-23 15:06:46,412 INFO L226 Difference]: Without dead ends: 236 [2022-11-23 15:06:46,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:06:46,421 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:06:46,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 270 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:06:46,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-23 15:06:46,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2022-11-23 15:06:46,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 132 states have (on average 1.2575757575757576) internal successors, (166), 136 states have internal predecessors, (166), 74 states have call successors, (74), 29 states have call predecessors, (74), 29 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2022-11-23 15:06:46,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 313 transitions. [2022-11-23 15:06:46,482 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 313 transitions. Word has length 84 [2022-11-23 15:06:46,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:06:46,484 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 313 transitions. [2022-11-23 15:06:46,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 15:06:46,484 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 313 transitions. [2022-11-23 15:06:46,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-23 15:06:46,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:06:46,489 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:06:46,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:06:46,490 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:06:46,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:06:46,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1995061181, now seen corresponding path program 1 times [2022-11-23 15:06:46,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:06:46,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002785155] [2022-11-23 15:06:46,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:46,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:06:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:06:46,878 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 15:06:46,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:06:46,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002785155] [2022-11-23 15:06:46,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002785155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:06:46,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:06:46,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:06:46,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525875941] [2022-11-23 15:06:46,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:06:46,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:06:46,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:06:46,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:06:46,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:06:46,884 INFO L87 Difference]: Start difference. First operand 236 states and 313 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-23 15:06:47,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:06:47,046 INFO L93 Difference]: Finished difference Result 382 states and 496 transitions. [2022-11-23 15:06:47,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:06:47,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 96 [2022-11-23 15:06:47,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:06:47,050 INFO L225 Difference]: With dead ends: 382 [2022-11-23 15:06:47,050 INFO L226 Difference]: Without dead ends: 238 [2022-11-23 15:06:47,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:06:47,053 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 0 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:06:47,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 533 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:06:47,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-23 15:06:47,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2022-11-23 15:06:47,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 134 states have (on average 1.2537313432835822) internal successors, (168), 138 states have internal predecessors, (168), 74 states have call successors, (74), 29 states have call predecessors, (74), 29 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2022-11-23 15:06:47,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 315 transitions. [2022-11-23 15:06:47,078 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 315 transitions. Word has length 96 [2022-11-23 15:06:47,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:06:47,079 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 315 transitions. [2022-11-23 15:06:47,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-23 15:06:47,080 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 315 transitions. [2022-11-23 15:06:47,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-23 15:06:47,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:06:47,084 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:06:47,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:06:47,085 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:06:47,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:06:47,085 INFO L85 PathProgramCache]: Analyzing trace with hash 896327459, now seen corresponding path program 1 times [2022-11-23 15:06:47,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:06:47,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674946772] [2022-11-23 15:06:47,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:47,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:06:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:06:47,259 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 15:06:47,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:06:47,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674946772] [2022-11-23 15:06:47,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674946772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:06:47,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:06:47,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:06:47,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130455981] [2022-11-23 15:06:47,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:06:47,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:06:47,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:06:47,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:06:47,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:06:47,263 INFO L87 Difference]: Start difference. First operand 238 states and 315 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-23 15:06:47,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:06:47,483 INFO L93 Difference]: Finished difference Result 511 states and 697 transitions. [2022-11-23 15:06:47,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:06:47,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 101 [2022-11-23 15:06:47,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:06:47,487 INFO L225 Difference]: With dead ends: 511 [2022-11-23 15:06:47,487 INFO L226 Difference]: Without dead ends: 291 [2022-11-23 15:06:47,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:06:47,490 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 59 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:06:47,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 549 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:06:47,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-23 15:06:47,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 286. [2022-11-23 15:06:47,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 168 states have (on average 1.3273809523809523) internal successors, (223), 172 states have internal predecessors, (223), 88 states have call successors, (88), 29 states have call predecessors, (88), 29 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2022-11-23 15:06:47,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 398 transitions. [2022-11-23 15:06:47,516 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 398 transitions. Word has length 101 [2022-11-23 15:06:47,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:06:47,516 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 398 transitions. [2022-11-23 15:06:47,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-23 15:06:47,517 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 398 transitions. [2022-11-23 15:06:47,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-23 15:06:47,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:06:47,519 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:06:47,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:06:47,520 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:06:47,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:06:47,520 INFO L85 PathProgramCache]: Analyzing trace with hash 373974869, now seen corresponding path program 1 times [2022-11-23 15:06:47,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:06:47,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115817739] [2022-11-23 15:06:47,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:47,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:06:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:06:47,762 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 15:06:47,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:06:47,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115817739] [2022-11-23 15:06:47,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115817739] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:06:47,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115734025] [2022-11-23 15:06:47,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:47,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:06:47,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:06:47,768 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:06:47,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:06:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:06:48,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:06:48,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:06:48,223 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 15:06:48,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:06:48,343 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 15:06:48,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115734025] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:06:48,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1773094055] [2022-11-23 15:06:48,365 INFO L159 IcfgInterpreter]: Started Sifa with 83 locations of interest [2022-11-23 15:06:48,365 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:06:48,369 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:06:48,374 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:06:48,375 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:07:27,778 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-23 15:07:28,077 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 267 for LOIs [2022-11-23 15:07:30,173 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-23 15:07:30,570 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 269 for LOIs [2022-11-23 15:07:34,134 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-23 15:07:34,191 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 229 for LOIs [2022-11-23 15:07:34,231 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 237 for LOIs [2022-11-23 15:07:34,271 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 254 for LOIs [2022-11-23 15:07:34,319 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:08:32,686 WARN L233 SmtUtils]: Spent 10.73s on a formula simplification. DAG size of input: 589 DAG size of output: 344 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:08:45,869 WARN L233 SmtUtils]: Spent 12.85s on a formula simplification. DAG size of input: 585 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:08:53,846 WARN L233 SmtUtils]: Spent 6.38s on a formula simplification. DAG size of input: 562 DAG size of output: 352 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:09:03,128 WARN L233 SmtUtils]: Spent 7.58s on a formula simplification. DAG size of input: 582 DAG size of output: 393 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:09:34,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1773094055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:09:34,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:09:34,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [4, 4, 4] total 46 [2022-11-23 15:09:34,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401254879] [2022-11-23 15:09:34,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:09:34,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-23 15:09:34,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:09:34,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-23 15:09:34,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1958, Unknown=0, NotChecked=0, Total=2070 [2022-11-23 15:09:34,797 INFO L87 Difference]: Start difference. First operand 286 states and 398 transitions. Second operand has 41 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 25 states have internal predecessors, (49), 13 states have call successors, (23), 9 states have call predecessors, (23), 7 states have return successors, (20), 11 states have call predecessors, (20), 11 states have call successors, (20) [2022-11-23 15:10:41,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:10:41,281 INFO L93 Difference]: Finished difference Result 645 states and 932 transitions. [2022-11-23 15:10:41,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-23 15:10:41,282 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 25 states have internal predecessors, (49), 13 states have call successors, (23), 9 states have call predecessors, (23), 7 states have return successors, (20), 11 states have call predecessors, (20), 11 states have call successors, (20) Word has length 102 [2022-11-23 15:10:41,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:10:41,285 INFO L225 Difference]: With dead ends: 645 [2022-11-23 15:10:41,285 INFO L226 Difference]: Without dead ends: 377 [2022-11-23 15:10:41,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 158.5s TimeCoverageRelationStatistics Valid=189, Invalid=2891, Unknown=0, NotChecked=0, Total=3080 [2022-11-23 15:10:41,289 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 256 mSDsluCounter, 6388 mSDsCounter, 0 mSdLazyCounter, 6507 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 6681 SdHoareTripleChecker+Invalid, 6541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 6507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:10:41,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 6681 Invalid, 6541 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [34 Valid, 6507 Invalid, 0 Unknown, 0 Unchecked, 27.8s Time] [2022-11-23 15:10:41,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-11-23 15:10:41,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 353. [2022-11-23 15:10:41,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 224 states have (on average 1.34375) internal successors, (301), 228 states have internal predecessors, (301), 94 states have call successors, (94), 36 states have call predecessors, (94), 34 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-11-23 15:10:41,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 488 transitions. [2022-11-23 15:10:41,456 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 488 transitions. Word has length 102 [2022-11-23 15:10:41,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:10:41,457 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 488 transitions. [2022-11-23 15:10:41,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 25 states have internal predecessors, (49), 13 states have call successors, (23), 9 states have call predecessors, (23), 7 states have return successors, (20), 11 states have call predecessors, (20), 11 states have call successors, (20) [2022-11-23 15:10:41,459 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 488 transitions. [2022-11-23 15:10:41,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-23 15:10:41,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:10:41,461 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:10:41,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 15:10:41,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:10:41,669 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:10:41,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:10:41,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1966056127, now seen corresponding path program 1 times [2022-11-23 15:10:41,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:10:41,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008741620] [2022-11-23 15:10:41,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:41,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:10:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:10:41,862 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:10:41,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:10:41,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008741620] [2022-11-23 15:10:41,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008741620] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:10:41,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96480127] [2022-11-23 15:10:41,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:41,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:10:41,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:10:41,866 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:10:41,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:10:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:10:42,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:10:42,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:10:42,243 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:10:42,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:10:42,311 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:10:42,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96480127] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:10:42,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1420671485] [2022-11-23 15:10:42,316 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2022-11-23 15:10:42,316 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:10:42,317 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:10:42,317 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:10:42,317 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:11:19,231 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-23 15:11:19,513 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 477 for LOIs [2022-11-23 15:11:58,153 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 447 for LOIs [2022-11-23 15:11:58,707 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-23 15:11:59,058 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 475 for LOIs [2022-11-23 15:12:06,218 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 277 for LOIs [2022-11-23 15:12:20,318 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-11-23 15:12:21,016 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 251 for LOIs [2022-11-23 15:12:21,061 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 436 for LOIs [2022-11-23 15:12:21,499 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 249 for LOIs [2022-11-23 15:12:21,608 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 431 for LOIs [2022-11-23 15:12:22,195 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 449 for LOIs [2022-11-23 15:12:22,856 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 254 for LOIs [2022-11-23 15:12:22,913 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:13:24,739 WARN L233 SmtUtils]: Spent 10.67s on a formula simplification. DAG size of input: 587 DAG size of output: 344 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:13:35,776 WARN L233 SmtUtils]: Spent 10.68s on a formula simplification. DAG size of input: 589 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:13:46,637 WARN L233 SmtUtils]: Spent 10.49s on a formula simplification. DAG size of input: 588 DAG size of output: 347 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:13:52,019 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 564 DAG size of output: 322 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:13:59,865 WARN L233 SmtUtils]: Spent 6.20s on a formula simplification. DAG size of input: 580 DAG size of output: 359 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:14:10,442 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 491 DAG size of output: 319 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:14:24,367 WARN L233 SmtUtils]: Spent 7.04s on a formula simplification. DAG size of input: 539 DAG size of output: 344 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:14:39,649 WARN L233 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 535 DAG size of output: 296 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:14:45,766 WARN L233 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 548 DAG size of output: 310 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:15:22,353 WARN L233 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 431 DAG size of output: 255 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:15:29,346 WARN L233 SmtUtils]: Spent 6.27s on a formula simplification. DAG size of input: 450 DAG size of output: 263 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:15:35,383 WARN L233 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 467 DAG size of output: 336 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:15:41,536 WARN L233 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 469 DAG size of output: 338 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:15:51,118 WARN L233 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 473 DAG size of output: 340 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:15:57,298 WARN L233 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 475 DAG size of output: 342 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:16:04,832 WARN L233 SmtUtils]: Spent 6.07s on a formula simplification. DAG size of input: 517 DAG size of output: 365 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:16:15,073 WARN L233 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 527 DAG size of output: 366 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:16:54,769 WARN L233 SmtUtils]: Spent 10.78s on a formula simplification. DAG size of input: 598 DAG size of output: 422 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:17:04,242 WARN L233 SmtUtils]: Spent 8.44s on a formula simplification. DAG size of input: 595 DAG size of output: 407 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:17:04,252 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6454#(and (= ~__ste_Client_Keyring1_User2~0 0) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= |old(~__ste_email_isEncrypted1~0)| 0) (= ~__ste_email_subject0~0.offset 0) (<= 0 ~__ste_email_encryptionKey1~0) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~client#1|) (= ~__SELECTED_FEATURE_Sign~0 0) (= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_outbuffer3~0 0) (= |outgoing__wrappee__AutoResponder_incoming_~privkey~0#1| |outgoing__wrappee__AutoResponder_incoming_~tmp~11#1|) (<= |outgoing__wrappee__AutoResponder_getClientId_~handle#1| 1) (= |outgoing__wrappee__AutoResponder_~pubkey~0#1| 0) (= ~__ste_Client_counter~0 0) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= |outgoing__wrappee__AutoResponder_mail_~tmp~5#1| 2) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~client#1| 1) (<= |old(~__ste_email_encryptionKey0~0)| 0) (<= 1 |outgoing__wrappee__AutoResponder_incoming_#in~msg#1|) (<= 1 |outgoing__wrappee__AutoResponder_#in~msg#1|) (<= ~__ste_email_encryptionKey1~0 0) (<= ~__ste_email_isSignatureVerified1~0 0) (<= |old(~__ste_email_to0~0)| 2) (= |outgoing__wrappee__AutoResponder_incoming_~privkey~0#1| 0) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (<= |outgoing__wrappee__AutoResponder_~client#1| 1) (<= |outgoing__wrappee__AutoResponder_incoming_#in~msg#1| 1) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (= ~__ste_client_forwardReceiver3~0 0) (= ~__ste_client_name2~0.offset 0) (= ~__ste_client_name1~0.base 0) (= |outgoing__wrappee__AutoResponder___utac_acc__EncryptVerify_spec__1_~tmp~19#1| 0) (<= |old(~queued_client~0)| 0) (= ~__SELECTED_FEATURE_Verify~0 0) (= ~__ste_Client_Keyring1_User0~0 0) (<= 0 |old(~__ste_email_encryptionKey1~0)|) (<= 2 |old(~__ste_email_to0~0)|) (<= 0 |old(~queued_message~0)|) (<= ~__ste_client_idCounter2~0 3) (<= ~queued_message~0 0) (<= |old(~__ste_email_from0~0)| 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~msg#1| 1) (<= ~__ste_email_isSignatureVerified0~0 0) (= ~__ste_email_body1~0.offset 0) (<= 0 |outgoing__wrappee__AutoResponder_~tmp___0~3#1|) (= ~__SELECTED_FEATURE_Encrypt~0 0) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= ~__ste_email_from0~0 2147483647) (= ~__ste_ClientAddressBook_size1~0 0) (= ~__ste_Client_Keyring0_PublicKey0~0 0) (= ~__ste_Email_counter~0 0) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~client#1|) (= ~__ste_ClientKeyring_size1~0 0) (= ~__ste_email_body0~0.offset 0) (<= 0 ~__ste_email_isSigned1~0) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (= ~__ste_ClientAddressBook_size0~0 0) (<= |old(~__ste_email_isEncrypted0~0)| 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (<= |outgoing__wrappee__AutoResponder_~tmp___0~3#1| 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~msg#1| 1) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~msg#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_~client#1|) (= ~head~0.offset 0) (= ~__ste_client_name0~0.offset 0) (<= ~__ste_client_autoResponse1~0 1) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483647) (<= ~__ste_client_privateKey2~0 789) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (<= 0 |old(~__ste_email_encryptionKey0~0)|) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_#in~client#1| 2) (= |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_#in~client#1| |outgoing__wrappee__AutoResponder_incoming_~client#1|) (<= |old(~queued_message~0)| 0) (<= 1 |old(~queue_empty~0)|) (<= ~queue_empty~0 1) (<= |outgoing__wrappee__AutoResponder_mail_#in~client#1| 1) (<= 2 |outgoing__wrappee__AutoResponder_~tmp~7#1|) (<= |outgoing__wrappee__AutoResponder___utac_acc__EncryptVerify_spec__1_~msg#1| 1) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 1 |outgoing__wrappee__AutoResponder_~msg#1|) (<= 0 |old(~__ste_email_isEncrypted0~0)|) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~client#1| 1) (<= 0 ~__ste_email_isEncrypted1~0) (= ~__SELECTED_FEATURE_Keys~0 0) (<= ~__ste_email_signKey0~0 2147483647) (<= 0 |old(~__ste_email_from0~0)|) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__EncryptVerify_spec__1_~msg#1|) (= ~__SELECTED_FEATURE_AddressBook~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1| 1) (= ~__ste_client_forwardReceiver2~0 0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (= |outgoing__wrappee__AutoResponder_verify_~client#1| |outgoing__wrappee__AutoResponder_verify_#in~client#1|) (= ~__SELECTED_FEATURE_Forward~0 0) (<= |outgoing__wrappee__AutoResponder_incoming_~msg#1| 1) (<= 0 ~__ste_email_isEncrypted0~0) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1|) (= ~__ste_Client_Keyring0_User0~0 0) (<= |outgoing__wrappee__AutoResponder_verify_#in~client#1| 2) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~tmp~6#1| 2147483647) (<= ~__ste_client_idCounter0~0 2147483647) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (<= |outgoing__wrappee__AutoResponder_mail_~client#1| 1) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isSigned0~0 1) (<= ~__ste_email_isEncrypted0~0 0) (= ~__ste_Client_AddressBook0_Alias0~0 0) (= |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_#in~msg#1| |outgoing__wrappee__AutoResponder_incoming_~msg#1|) (= ~__ste_email_id0~0 0) (<= ~__ste_client_autoResponse0~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~26#1| 2147483647) (<= 0 (+ 2147483648 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~tmp~6#1|)) (= ~__ste_Client_Keyring2_User1~0 0) (<= |outgoing__wrappee__AutoResponder_~receiver~0#1| 2) (<= 2 |outgoing__wrappee__AutoResponder_verify_#in~client#1|) (<= 3 ~__ste_client_idCounter2~0) (<= |outgoing__wrappee__AutoResponder___utac_acc__EncryptVerify_spec__1_#in~msg#1| 1) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~client#1|) (<= 2 |outgoing__wrappee__AutoResponder_incoming_#in~client#1|) (= ~__ste_Client_AddressBook2_Address2~0 0) (= 3 ~chuck~0) (= ~__ste_Client_AddressBook2_Address1~0 0) (<= 0 ~__ste_email_signKey1~0) (<= 1 ~queue_empty~0) (<= ~__ste_email_signKey1~0 0) (<= ~__ste_email_isSigned1~0 0) (<= 1 |outgoing__wrappee__AutoResponder_mail_~msg#1|) (= ~bob~0 1) (= ~__ste_client_forwardReceiver1~0 0) (<= 0 ~__ste_client_autoResponse0~0) (<= 0 ~queued_message~0) (<= 0 |old(~__ste_email_isSignatureVerified0~0)|) (= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 0 ~__ste_email_isSignatureVerified1~0) (= ~__ste_client_outbuffer0~0 0) (<= 789 ~__ste_client_privateKey2~0) (<= 2 |outgoing__wrappee__AutoResponder_~receiver~0#1|) (= |outgoing__wrappee__AutoResponder_verify_~msg#1| |outgoing__wrappee__AutoResponder_verify_~__utac__ad__arg1~0#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~msg#1|) (<= 0 |old(~__ste_email_isEncrypted1~0)|) (= ~__SELECTED_FEATURE_Base~0 0) (= ~__ste_client_forwardReceiver0~0 0) (= ~__ste_Client_Keyring2_User0~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483648)) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (= ~__ste_Client_AddressBook2_Address0~0 0) (<= |outgoing__wrappee__AutoResponder_#in~client#1| 1) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~0) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (<= 0 ~__ste_email_isSignatureVerified0~0) (= ~__ste_Client_AddressBook1_Address0~0 0) (= ~__ste_client_name2~0.base 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~26#1| 2147483648)) (<= 0 |old(~queued_client~0)|) (<= ~__ste_email_encryptionKey0~0 0) (<= |old(~__ste_email_encryptionKey1~0)| 0) (= ~__ste_email_subject1~0.base 0) (<= |old(~queue_empty~0)| 1) (<= 2 |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_#in~client#1|) (<= |outgoing__wrappee__AutoResponder_#in~msg#1| 1) (<= |outgoing__wrappee__AutoResponder_mail_~msg#1| 1) (= ~__ste_Client_AddressBook1_Alias0~0 0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__EncryptVerify_spec__1_#in~msg#1|) (<= 1 ~__ste_client_autoResponse1~0) (= ~__ste_Client_Keyring2_User2~0 0) (= ~head~0.base 0) (= ~__ste_Client_Keyring1_User1~0 0) (<= |outgoing__wrappee__AutoResponder_mail_#in~msg#1| 1) (= |#NULL.offset| 0) (= ~__ste_Client_AddressBook2_Alias2~0 0) (= |outgoing__wrappee__AutoResponder_verify_#in~client#1| |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_~client#1|) (<= 0 ~__ste_email_isSigned0~0) (<= |outgoing__wrappee__AutoResponder_~msg#1| 1) (<= 0 ~__ste_client_autoResponse2~0) (= ~__ste_email_subject1~0.offset 0) (= ~__ste_Client_AddressBook0_Alias2~0 0) (= ~__ste_ClientKeyring_size0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_#in~client#1|) (<= 1 |outgoing__wrappee__AutoResponder_verify_#in~msg#1|) (= ~__ste_Client_AddressBook1_Address1~0 0) (= 0 ~__ste_Client_AddressBook0_Address0~0) (= ~__ste_client_outbuffer1~0 0) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= ~__ste_email_isEncrypted1~0 0) (<= |old(~__ste_email_isSignatureVerified0~0)| 0) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= |old(~__ste_email_isSignatureVerified1~0)| 0) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~msg#1|) (<= |outgoing__wrappee__AutoResponder_verify_#in~msg#1| 1) (<= |outgoing__wrappee__AutoResponder_incoming_#in~client#1| 2) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_~handle#1|) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (<= 1 |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_~msg#1|) (<= 0 |old(~__ste_email_isSignatureVerified1~0)|) (= ~__ste_client_outbuffer2~0 0) (= |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_#in~msg#1| |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_~msg#1|) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= 2 ~__ste_email_to0~0) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (<= 1 |outgoing__wrappee__AutoResponder_~client#1|) (= ~__ste_ClientAddressBook_size2~0 0) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (<= ~__ste_client_autoResponse2~0 0) (= ~__ste_email_body1~0.base 0) (= ~__ste_ClientKeyring_size2~0 0) (= |outgoing__wrappee__AutoResponder_verify_~msg#1| |outgoing__wrappee__AutoResponder_verify_#in~msg#1|) (<= 0 ~__ste_email_encryptionKey0~0) (= |#NULL.base| 0) (<= |outgoing__wrappee__AutoResponder_~tmp~7#1| 2) (<= 2 |outgoing__wrappee__AutoResponder_mail_~tmp~5#1|) (<= ~queued_client~0 0))' at error location [2022-11-23 15:17:04,252 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:17:04,252 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:17:04,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-23 15:17:04,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245799959] [2022-11-23 15:17:04,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:17:04,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 15:17:04,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:17:04,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 15:17:04,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=5041, Unknown=0, NotChecked=0, Total=5256 [2022-11-23 15:17:04,257 INFO L87 Difference]: Start difference. First operand 353 states and 488 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-23 15:17:04,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:17:04,924 INFO L93 Difference]: Finished difference Result 878 states and 1278 transitions. [2022-11-23 15:17:04,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:17:04,924 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 91 [2022-11-23 15:17:04,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:17:04,929 INFO L225 Difference]: With dead ends: 878 [2022-11-23 15:17:04,929 INFO L226 Difference]: Without dead ends: 713 [2022-11-23 15:17:04,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 201 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1121 ImplicationChecksByTransitivity, 281.3s TimeCoverageRelationStatistics Valid=215, Invalid=5041, Unknown=0, NotChecked=0, Total=5256 [2022-11-23 15:17:04,932 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 204 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:17:04,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 1217 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:17:04,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2022-11-23 15:17:05,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 694. [2022-11-23 15:17:05,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 486 states have (on average 1.4341563786008231) internal successors, (697), 490 states have internal predecessors, (697), 173 states have call successors, (173), 36 states have call predecessors, (173), 34 states have return successors, (172), 169 states have call predecessors, (172), 172 states have call successors, (172) [2022-11-23 15:17:05,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1042 transitions. [2022-11-23 15:17:05,192 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1042 transitions. Word has length 91 [2022-11-23 15:17:05,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:17:05,193 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 1042 transitions. [2022-11-23 15:17:05,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-23 15:17:05,193 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1042 transitions. [2022-11-23 15:17:05,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-23 15:17:05,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:17:05,197 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:17:05,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:17:05,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:17:05,405 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:17:05,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:17:05,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1499511015, now seen corresponding path program 1 times [2022-11-23 15:17:05,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:17:05,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456814310] [2022-11-23 15:17:05,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:05,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:17:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:06,715 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:17:06,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:17:06,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456814310] [2022-11-23 15:17:06,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456814310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:17:06,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:17:06,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-23 15:17:06,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408421743] [2022-11-23 15:17:06,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:17:06,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 15:17:06,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:17:06,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 15:17:06,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-11-23 15:17:06,717 INFO L87 Difference]: Start difference. First operand 694 states and 1042 transitions. Second operand has 20 states, 15 states have (on average 4.2) internal successors, (63), 16 states have internal predecessors, (63), 11 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-23 15:17:09,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:17:09,627 INFO L93 Difference]: Finished difference Result 924 states and 1362 transitions. [2022-11-23 15:17:09,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-23 15:17:09,628 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 4.2) internal successors, (63), 16 states have internal predecessors, (63), 11 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) Word has length 107 [2022-11-23 15:17:09,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:17:09,635 INFO L225 Difference]: With dead ends: 924 [2022-11-23 15:17:09,636 INFO L226 Difference]: Without dead ends: 920 [2022-11-23 15:17:09,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=170, Invalid=1090, Unknown=0, NotChecked=0, Total=1260 [2022-11-23 15:17:09,641 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 580 mSDsluCounter, 3754 mSDsCounter, 0 mSdLazyCounter, 3919 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 4114 SdHoareTripleChecker+Invalid, 4155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 3919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:17:09,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 4114 Invalid, 4155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 3919 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-23 15:17:09,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2022-11-23 15:17:09,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 912. [2022-11-23 15:17:09,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 607 states have (on average 1.3822075782537067) internal successors, (839), 614 states have internal predecessors, (839), 250 states have call successors, (250), 56 states have call predecessors, (250), 54 states have return successors, (253), 243 states have call predecessors, (253), 245 states have call successors, (253) [2022-11-23 15:17:09,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1342 transitions. [2022-11-23 15:17:09,952 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1342 transitions. Word has length 107 [2022-11-23 15:17:09,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:17:09,952 INFO L495 AbstractCegarLoop]: Abstraction has 912 states and 1342 transitions. [2022-11-23 15:17:09,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 4.2) internal successors, (63), 16 states have internal predecessors, (63), 11 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-23 15:17:09,953 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1342 transitions. [2022-11-23 15:17:09,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-23 15:17:09,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:17:09,957 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:17:09,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:17:09,957 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:17:09,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:17:09,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1517537704, now seen corresponding path program 1 times [2022-11-23 15:17:09,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:17:09,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239968256] [2022-11-23 15:17:09,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:09,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:17:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:12,363 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 15:17:12,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:17:12,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239968256] [2022-11-23 15:17:12,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239968256] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:17:12,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768554033] [2022-11-23 15:17:12,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:12,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:17:12,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:17:12,371 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:17:12,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:17:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:12,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-23 15:17:12,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:17:13,711 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 15:17:13,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:17:13,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768554033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:17:13,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:17:13,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [27] total 39 [2022-11-23 15:17:13,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57487632] [2022-11-23 15:17:13,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:17:13,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 15:17:13,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:17:13,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 15:17:13,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1380, Unknown=0, NotChecked=0, Total=1482 [2022-11-23 15:17:13,714 INFO L87 Difference]: Start difference. First operand 912 states and 1342 transitions. Second operand has 14 states, 13 states have (on average 5.230769230769231) internal successors, (68), 9 states have internal predecessors, (68), 6 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-23 15:17:16,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:17:16,485 INFO L93 Difference]: Finished difference Result 1801 states and 2615 transitions. [2022-11-23 15:17:16,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 15:17:16,485 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.230769230769231) internal successors, (68), 9 states have internal predecessors, (68), 6 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) Word has length 113 [2022-11-23 15:17:16,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:17:16,503 INFO L225 Difference]: With dead ends: 1801 [2022-11-23 15:17:16,504 INFO L226 Difference]: Without dead ends: 1659 [2022-11-23 15:17:16,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=176, Invalid=2274, Unknown=0, NotChecked=0, Total=2450 [2022-11-23 15:17:16,509 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 907 mSDsluCounter, 2022 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 2445 SdHoareTripleChecker+Invalid, 2875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 489 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:17:16,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 2445 Invalid, 2875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [489 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-23 15:17:16,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2022-11-23 15:17:16,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1506. [2022-11-23 15:17:16,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 953 states have (on average 1.3525708289611753) internal successors, (1289), 983 states have internal predecessors, (1289), 451 states have call successors, (451), 104 states have call predecessors, (451), 101 states have return successors, (454), 423 states have call predecessors, (454), 440 states have call successors, (454) [2022-11-23 15:17:16,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2194 transitions. [2022-11-23 15:17:16,946 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2194 transitions. Word has length 113 [2022-11-23 15:17:16,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:17:16,946 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2194 transitions. [2022-11-23 15:17:16,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.230769230769231) internal successors, (68), 9 states have internal predecessors, (68), 6 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-23 15:17:16,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2194 transitions. [2022-11-23 15:17:16,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-23 15:17:16,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:17:16,952 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:17:16,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 15:17:17,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:17:17,159 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:17:17,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:17:17,160 INFO L85 PathProgramCache]: Analyzing trace with hash 450341016, now seen corresponding path program 1 times [2022-11-23 15:17:17,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:17:17,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75819729] [2022-11-23 15:17:17,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:17,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:17:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:17,293 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 15:17:17,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:17:17,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75819729] [2022-11-23 15:17:17,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75819729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:17:17,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:17:17,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:17:17,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503763278] [2022-11-23 15:17:17,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:17:17,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:17:17,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:17:17,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:17:17,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:17:17,296 INFO L87 Difference]: Start difference. First operand 1506 states and 2194 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-23 15:17:17,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:17:17,991 INFO L93 Difference]: Finished difference Result 3111 states and 4610 transitions. [2022-11-23 15:17:17,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:17:17,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 117 [2022-11-23 15:17:17,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:17:18,004 INFO L225 Difference]: With dead ends: 3111 [2022-11-23 15:17:18,004 INFO L226 Difference]: Without dead ends: 1848 [2022-11-23 15:17:18,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:17:18,013 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 54 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:17:18,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 553 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:17:18,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2022-11-23 15:17:18,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1832. [2022-11-23 15:17:18,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1832 states, 1172 states have (on average 1.3839590443686007) internal successors, (1622), 1212 states have internal predecessors, (1622), 558 states have call successors, (558), 104 states have call predecessors, (558), 101 states have return successors, (561), 520 states have call predecessors, (561), 547 states have call successors, (561) [2022-11-23 15:17:18,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1832 states to 1832 states and 2741 transitions. [2022-11-23 15:17:18,726 INFO L78 Accepts]: Start accepts. Automaton has 1832 states and 2741 transitions. Word has length 117 [2022-11-23 15:17:18,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:17:18,727 INFO L495 AbstractCegarLoop]: Abstraction has 1832 states and 2741 transitions. [2022-11-23 15:17:18,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-23 15:17:18,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1832 states and 2741 transitions. [2022-11-23 15:17:18,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-23 15:17:18,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:17:18,733 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:17:18,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 15:17:18,734 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:17:18,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:17:18,734 INFO L85 PathProgramCache]: Analyzing trace with hash -169255797, now seen corresponding path program 1 times [2022-11-23 15:17:18,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:17:18,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073125018] [2022-11-23 15:17:18,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:18,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:17:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:18,854 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 15:17:18,854 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:17:18,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073125018] [2022-11-23 15:17:18,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073125018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:17:18,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:17:18,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:17:18,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547793430] [2022-11-23 15:17:18,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:17:18,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:17:18,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:17:18,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:17:18,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:17:18,857 INFO L87 Difference]: Start difference. First operand 1832 states and 2741 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-23 15:17:19,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:17:19,879 INFO L93 Difference]: Finished difference Result 3888 states and 5929 transitions. [2022-11-23 15:17:19,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:17:19,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 118 [2022-11-23 15:17:19,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:17:19,894 INFO L225 Difference]: With dead ends: 3888 [2022-11-23 15:17:19,894 INFO L226 Difference]: Without dead ends: 2375 [2022-11-23 15:17:19,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:17:19,905 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 52 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:17:19,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 562 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:17:19,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2022-11-23 15:17:20,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 2359. [2022-11-23 15:17:20,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2359 states, 1541 states have (on average 1.4218040233614535) internal successors, (2191), 1596 states have internal predecessors, (2191), 716 states have call successors, (716), 104 states have call predecessors, (716), 101 states have return successors, (719), 663 states have call predecessors, (719), 705 states have call successors, (719) [2022-11-23 15:17:20,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 3626 transitions. [2022-11-23 15:17:20,611 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 3626 transitions. Word has length 118 [2022-11-23 15:17:20,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:17:20,612 INFO L495 AbstractCegarLoop]: Abstraction has 2359 states and 3626 transitions. [2022-11-23 15:17:20,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-23 15:17:20,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 3626 transitions. [2022-11-23 15:17:20,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-23 15:17:20,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:17:20,621 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:17:20,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 15:17:20,622 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:17:20,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:17:20,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1817842638, now seen corresponding path program 1 times [2022-11-23 15:17:20,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:17:20,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536752630] [2022-11-23 15:17:20,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:20,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:17:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:20,783 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-23 15:17:20,783 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:17:20,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536752630] [2022-11-23 15:17:20,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536752630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:17:20,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:17:20,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:17:20,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743359394] [2022-11-23 15:17:20,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:17:20,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:17:20,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:17:20,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:17:20,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:17:20,786 INFO L87 Difference]: Start difference. First operand 2359 states and 3626 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-23 15:17:22,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:17:22,109 INFO L93 Difference]: Finished difference Result 4905 states and 7639 transitions. [2022-11-23 15:17:22,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:17:22,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 130 [2022-11-23 15:17:22,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:17:22,127 INFO L225 Difference]: With dead ends: 4905 [2022-11-23 15:17:22,127 INFO L226 Difference]: Without dead ends: 2955 [2022-11-23 15:17:22,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:17:22,137 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 50 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:17:22,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 539 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:17:22,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2022-11-23 15:17:23,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 2947. [2022-11-23 15:17:23,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2947 states, 1967 states have (on average 1.440264361972547) internal successors, (2833), 2022 states have internal predecessors, (2833), 878 states have call successors, (878), 104 states have call predecessors, (878), 101 states have return successors, (881), 825 states have call predecessors, (881), 867 states have call successors, (881) [2022-11-23 15:17:23,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2947 states to 2947 states and 4592 transitions. [2022-11-23 15:17:23,170 INFO L78 Accepts]: Start accepts. Automaton has 2947 states and 4592 transitions. Word has length 130 [2022-11-23 15:17:23,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:17:23,171 INFO L495 AbstractCegarLoop]: Abstraction has 2947 states and 4592 transitions. [2022-11-23 15:17:23,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-23 15:17:23,171 INFO L276 IsEmpty]: Start isEmpty. Operand 2947 states and 4592 transitions. [2022-11-23 15:17:23,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-23 15:17:23,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:17:23,183 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:17:23,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 15:17:23,184 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:17:23,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:17:23,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1662610412, now seen corresponding path program 1 times [2022-11-23 15:17:23,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:17:23,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213192065] [2022-11-23 15:17:23,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:23,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:17:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:23,298 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-23 15:17:23,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:17:23,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213192065] [2022-11-23 15:17:23,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213192065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:17:23,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:17:23,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:17:23,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558561385] [2022-11-23 15:17:23,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:17:23,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:17:23,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:17:23,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:17:23,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:17:23,302 INFO L87 Difference]: Start difference. First operand 2947 states and 4592 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-23 15:17:24,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:17:24,957 INFO L93 Difference]: Finished difference Result 6280 states and 9919 transitions. [2022-11-23 15:17:24,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:17:24,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 131 [2022-11-23 15:17:24,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:17:24,980 INFO L225 Difference]: With dead ends: 6280 [2022-11-23 15:17:24,980 INFO L226 Difference]: Without dead ends: 3889 [2022-11-23 15:17:24,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:17:24,992 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 48 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:17:24,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 539 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:17:24,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2022-11-23 15:17:26,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 3881. [2022-11-23 15:17:26,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3881 states, 2656 states have (on average 1.4582078313253013) internal successors, (3873), 2711 states have internal predecessors, (3873), 1123 states have call successors, (1123), 104 states have call predecessors, (1123), 101 states have return successors, (1126), 1070 states have call predecessors, (1126), 1112 states have call successors, (1126) [2022-11-23 15:17:26,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3881 states to 3881 states and 6122 transitions. [2022-11-23 15:17:26,289 INFO L78 Accepts]: Start accepts. Automaton has 3881 states and 6122 transitions. Word has length 131 [2022-11-23 15:17:26,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:17:26,289 INFO L495 AbstractCegarLoop]: Abstraction has 3881 states and 6122 transitions. [2022-11-23 15:17:26,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-23 15:17:26,289 INFO L276 IsEmpty]: Start isEmpty. Operand 3881 states and 6122 transitions. [2022-11-23 15:17:26,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-23 15:17:26,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:17:26,307 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:17:26,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 15:17:26,307 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:17:26,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:17:26,308 INFO L85 PathProgramCache]: Analyzing trace with hash -2023402846, now seen corresponding path program 1 times [2022-11-23 15:17:26,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:17:26,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395794303] [2022-11-23 15:17:26,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:26,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:17:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:26,408 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 15:17:26,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:17:26,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395794303] [2022-11-23 15:17:26,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395794303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:17:26,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:17:26,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:17:26,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541924688] [2022-11-23 15:17:26,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:17:26,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:17:26,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:17:26,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:17:26,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:17:26,411 INFO L87 Difference]: Start difference. First operand 3881 states and 6122 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-23 15:17:28,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:17:28,149 INFO L93 Difference]: Finished difference Result 9023 states and 14446 transitions. [2022-11-23 15:17:28,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:17:28,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 121 [2022-11-23 15:17:28,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:17:28,184 INFO L225 Difference]: With dead ends: 9023 [2022-11-23 15:17:28,184 INFO L226 Difference]: Without dead ends: 5845 [2022-11-23 15:17:28,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:17:28,198 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 46 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:17:28,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 562 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:17:28,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5845 states. [2022-11-23 15:17:29,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5845 to 5829. [2022-11-23 15:17:29,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5829 states, 4043 states have (on average 1.46895869403908) internal successors, (5939), 4123 states have internal predecessors, (5939), 1684 states have call successors, (1684), 104 states have call predecessors, (1684), 101 states have return successors, (1687), 1606 states have call predecessors, (1687), 1673 states have call successors, (1687) [2022-11-23 15:17:29,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5829 states to 5829 states and 9310 transitions. [2022-11-23 15:17:29,923 INFO L78 Accepts]: Start accepts. Automaton has 5829 states and 9310 transitions. Word has length 121 [2022-11-23 15:17:29,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:17:29,924 INFO L495 AbstractCegarLoop]: Abstraction has 5829 states and 9310 transitions. [2022-11-23 15:17:29,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-23 15:17:29,924 INFO L276 IsEmpty]: Start isEmpty. Operand 5829 states and 9310 transitions. [2022-11-23 15:17:29,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-23 15:17:29,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:17:29,951 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:17:29,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 15:17:29,951 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:17:29,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:17:29,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1523137379, now seen corresponding path program 1 times [2022-11-23 15:17:29,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:17:29,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178804334] [2022-11-23 15:17:29,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:29,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:17:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:30,106 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 15:17:30,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:17:30,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178804334] [2022-11-23 15:17:30,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178804334] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:17:30,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938397038] [2022-11-23 15:17:30,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:30,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:17:30,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:17:30,108 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:17:30,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 15:17:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:30,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 1379 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:17:30,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:17:30,507 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 15:17:30,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:17:30,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938397038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:17:30,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:17:30,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-23 15:17:30,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990977358] [2022-11-23 15:17:30,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:17:30,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:17:30,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:17:30,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:17:30,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:17:30,509 INFO L87 Difference]: Start difference. First operand 5829 states and 9310 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-23 15:17:32,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:17:32,032 INFO L93 Difference]: Finished difference Result 10224 states and 16326 transitions. [2022-11-23 15:17:32,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:17:32,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 121 [2022-11-23 15:17:32,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:17:32,090 INFO L225 Difference]: With dead ends: 10224 [2022-11-23 15:17:32,090 INFO L226 Difference]: Without dead ends: 5743 [2022-11-23 15:17:32,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:17:32,105 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 57 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:17:32,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 625 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:17:32,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5743 states. [2022-11-23 15:17:34,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5743 to 5727. [2022-11-23 15:17:34,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5727 states, 3941 states have (on average 1.4572443542248161) internal successors, (5743), 4021 states have internal predecessors, (5743), 1684 states have call successors, (1684), 104 states have call predecessors, (1684), 101 states have return successors, (1687), 1606 states have call predecessors, (1687), 1673 states have call successors, (1687) [2022-11-23 15:17:34,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5727 states to 5727 states and 9114 transitions. [2022-11-23 15:17:34,179 INFO L78 Accepts]: Start accepts. Automaton has 5727 states and 9114 transitions. Word has length 121 [2022-11-23 15:17:34,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:17:34,180 INFO L495 AbstractCegarLoop]: Abstraction has 5727 states and 9114 transitions. [2022-11-23 15:17:34,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-23 15:17:34,181 INFO L276 IsEmpty]: Start isEmpty. Operand 5727 states and 9114 transitions. [2022-11-23 15:17:34,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-23 15:17:34,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:17:34,205 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:17:34,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 15:17:34,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc3e96-bee9-424a-96b6-e8a8a92a945b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-23 15:17:34,414 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:17:34,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:17:34,414 INFO L85 PathProgramCache]: Analyzing trace with hash 541917000, now seen corresponding path program 1 times [2022-11-23 15:17:34,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:17:34,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569052894] [2022-11-23 15:17:34,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:34,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:17:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:34,519 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-23 15:17:34,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:17:34,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569052894] [2022-11-23 15:17:34,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569052894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:17:34,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:17:34,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:17:34,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004663953] [2022-11-23 15:17:34,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:17:34,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:17:34,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:17:34,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:17:34,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:17:34,522 INFO L87 Difference]: Start difference. First operand 5727 states and 9114 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-23 15:17:36,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:17:36,739 INFO L93 Difference]: Finished difference Result 13927 states and 22444 transitions. [2022-11-23 15:17:36,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:17:36,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 133 [2022-11-23 15:17:36,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:17:36,774 INFO L225 Difference]: With dead ends: 13927 [2022-11-23 15:17:36,774 INFO L226 Difference]: Without dead ends: 9075 [2022-11-23 15:17:36,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:17:36,790 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 44 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:17:36,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 545 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:17:36,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9075 states. [2022-11-23 15:17:38,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9075 to 9059. [2022-11-23 15:17:38,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9059 states, 6338 states have (on average 1.4649731776585673) internal successors, (9285), 6463 states have internal predecessors, (9285), 2619 states have call successors, (2619), 104 states have call predecessors, (2619), 101 states have return successors, (2622), 2496 states have call predecessors, (2622), 2608 states have call successors, (2622) [2022-11-23 15:17:38,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9059 states to 9059 states and 14526 transitions. [2022-11-23 15:17:38,961 INFO L78 Accepts]: Start accepts. Automaton has 9059 states and 14526 transitions. Word has length 133 [2022-11-23 15:17:38,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:17:38,962 INFO L495 AbstractCegarLoop]: Abstraction has 9059 states and 14526 transitions. [2022-11-23 15:17:38,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-23 15:17:38,962 INFO L276 IsEmpty]: Start isEmpty. Operand 9059 states and 14526 transitions. [2022-11-23 15:17:38,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 15:17:38,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:17:38,997 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:17:38,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 15:17:38,997 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:17:38,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:17:38,998 INFO L85 PathProgramCache]: Analyzing trace with hash -635041400, now seen corresponding path program 1 times [2022-11-23 15:17:38,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:17:38,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828123269] [2022-11-23 15:17:38,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:38,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:17:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:39,209 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-23 15:17:39,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:17:39,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828123269] [2022-11-23 15:17:39,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828123269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:17:39,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:17:39,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:17:39,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133851670] [2022-11-23 15:17:39,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:17:39,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:17:39,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:17:39,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:17:39,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:17:39,213 INFO L87 Difference]: Start difference. First operand 9059 states and 14526 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-23 15:17:43,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:17:43,552 INFO L93 Difference]: Finished difference Result 22381 states and 36235 transitions. [2022-11-23 15:17:43,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:17:43,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 134 [2022-11-23 15:17:43,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:17:43,612 INFO L225 Difference]: With dead ends: 22381 [2022-11-23 15:17:43,612 INFO L226 Difference]: Without dead ends: 14645 [2022-11-23 15:17:43,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:17:43,633 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 42 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:17:43,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 541 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:17:43,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14645 states. [2022-11-23 15:17:47,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14645 to 14629. [2022-11-23 15:17:47,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14629 states, 10534 states have (on average 1.4735143345357888) internal successors, (15522), 10744 states have internal predecessors, (15522), 3993 states have call successors, (3993), 104 states have call predecessors, (3993), 101 states have return successors, (3996), 3785 states have call predecessors, (3996), 3982 states have call successors, (3996) [2022-11-23 15:17:47,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14629 states to 14629 states and 23511 transitions. [2022-11-23 15:17:47,535 INFO L78 Accepts]: Start accepts. Automaton has 14629 states and 23511 transitions. Word has length 134 [2022-11-23 15:17:47,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:17:47,536 INFO L495 AbstractCegarLoop]: Abstraction has 14629 states and 23511 transitions. [2022-11-23 15:17:47,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-23 15:17:47,536 INFO L276 IsEmpty]: Start isEmpty. Operand 14629 states and 23511 transitions. [2022-11-23 15:17:47,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-23 15:17:47,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:17:47,591 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:17:47,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 15:17:47,592 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:17:47,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:17:47,593 INFO L85 PathProgramCache]: Analyzing trace with hash -872553785, now seen corresponding path program 1 times [2022-11-23 15:17:47,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:17:47,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995651402] [2022-11-23 15:17:47,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:47,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:17:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:47,725 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-23 15:17:47,725 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:17:47,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995651402] [2022-11-23 15:17:47,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995651402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:17:47,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:17:47,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:17:47,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576533126] [2022-11-23 15:17:47,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:17:47,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:17:47,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:17:47,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:17:47,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:17:47,729 INFO L87 Difference]: Start difference. First operand 14629 states and 23511 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-23 15:17:53,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:17:53,757 INFO L93 Difference]: Finished difference Result 36997 states and 59887 transitions. [2022-11-23 15:17:53,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:17:53,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 135 [2022-11-23 15:17:53,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:17:53,858 INFO L225 Difference]: With dead ends: 36997 [2022-11-23 15:17:53,859 INFO L226 Difference]: Without dead ends: 24149 [2022-11-23 15:17:53,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:17:53,896 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 40 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:17:53,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 544 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:17:53,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24149 states. [2022-11-23 15:18:00,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24149 to 24141. [2022-11-23 15:18:00,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24141 states, 17596 states have (on average 1.4678904296431008) internal successors, (25829), 17806 states have internal predecessors, (25829), 6443 states have call successors, (6443), 104 states have call predecessors, (6443), 101 states have return successors, (6446), 6235 states have call predecessors, (6446), 6432 states have call successors, (6446) [2022-11-23 15:18:00,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24141 states to 24141 states and 38718 transitions. [2022-11-23 15:18:00,223 INFO L78 Accepts]: Start accepts. Automaton has 24141 states and 38718 transitions. Word has length 135 [2022-11-23 15:18:00,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:18:00,225 INFO L495 AbstractCegarLoop]: Abstraction has 24141 states and 38718 transitions. [2022-11-23 15:18:00,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-23 15:18:00,226 INFO L276 IsEmpty]: Start isEmpty. Operand 24141 states and 38718 transitions. [2022-11-23 15:18:00,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-23 15:18:00,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:18:00,275 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:18:00,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 15:18:00,276 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:18:00,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:18:00,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1206705942, now seen corresponding path program 1 times [2022-11-23 15:18:00,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:18:00,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323507683] [2022-11-23 15:18:00,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:18:00,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:18:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:18:00,374 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 15:18:00,374 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:18:00,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323507683] [2022-11-23 15:18:00,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323507683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:18:00,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:18:00,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:18:00,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021624122] [2022-11-23 15:18:00,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:18:00,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:18:00,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:18:00,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:18:00,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:18:00,377 INFO L87 Difference]: Start difference. First operand 24141 states and 38718 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-23 15:18:10,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:18:10,071 INFO L93 Difference]: Finished difference Result 63443 states and 102362 transitions. [2022-11-23 15:18:10,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:18:10,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 125 [2022-11-23 15:18:10,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:18:10,221 INFO L225 Difference]: With dead ends: 63443 [2022-11-23 15:18:10,221 INFO L226 Difference]: Without dead ends: 43082 [2022-11-23 15:18:10,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:18:10,271 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 38 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:18:10,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 544 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:18:10,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43082 states.