./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product13.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product13.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI --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 2fde44ff6f2aac911c03318478d3361889c0f9ce519411733d9129672caa5fa0 --- 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-5e519f3 [2022-11-03 04:09:28,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:09:28,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:09:28,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:09:28,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:09:28,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:09:28,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:09:28,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:09:28,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:09:28,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:09:28,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:09:28,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:09:28,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:09:28,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:09:28,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:09:28,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:09:28,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:09:28,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:09:28,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:09:28,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:09:28,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:09:28,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:09:28,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:09:28,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:09:28,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:09:28,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:09:28,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:09:28,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:09:28,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:09:28,087 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:09:28,087 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:09:28,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:09:28,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:09:28,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:09:28,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:09:28,092 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:09:28,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:09:28,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:09:28,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:09:28,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:09:28,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:09:28,097 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 04:09:28,120 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:09:28,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:09:28,121 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:09:28,122 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:09:28,122 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:09:28,123 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:09:28,123 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:09:28,123 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:09:28,124 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:09:28,124 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:09:28,124 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:09:28,125 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:09:28,125 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:09:28,125 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:09:28,125 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:09:28,126 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:09:28,126 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:09:28,126 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:09:28,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:09:28,128 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:09:28,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:09:28,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:09:28,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:09:28,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:09:28,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:09:28,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:09:28,130 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:09:28,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:09:28,130 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:09:28,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:09:28,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:09:28,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:09:28,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:09:28,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:09:28,132 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:09:28,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:09:28,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:09:28,133 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:09:28,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:09:28,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:09:28,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:09:28,134 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_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fde44ff6f2aac911c03318478d3361889c0f9ce519411733d9129672caa5fa0 [2022-11-03 04:09:28,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:09:28,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:09:28,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:09:28,475 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:09:28,479 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:09:28,480 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec7_product13.cil.c [2022-11-03 04:09:28,552 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/data/b19ec7259/539601adb93c4f67a3a4b6717600dd2d/FLAG3f294ea15 [2022-11-03 04:09:29,140 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:09:29,140 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/sv-benchmarks/c/product-lines/email_spec7_product13.cil.c [2022-11-03 04:09:29,158 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/data/b19ec7259/539601adb93c4f67a3a4b6717600dd2d/FLAG3f294ea15 [2022-11-03 04:09:29,387 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/data/b19ec7259/539601adb93c4f67a3a4b6717600dd2d [2022-11-03 04:09:29,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:09:29,391 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:09:29,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:09:29,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:09:29,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:09:29,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:29" (1/1) ... [2022-11-03 04:09:29,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76d6daab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:29, skipping insertion in model container [2022-11-03 04:09:29,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:29" (1/1) ... [2022-11-03 04:09:29,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:09:29,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:09:29,947 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/sv-benchmarks/c/product-lines/email_spec7_product13.cil.c[16810,16823] [2022-11-03 04:09:30,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:09:30,172 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:09:30,244 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/sv-benchmarks/c/product-lines/email_spec7_product13.cil.c[16810,16823] [2022-11-03 04:09:30,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:09:30,380 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:09:30,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:30 WrapperNode [2022-11-03 04:09:30,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:09:30,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:09:30,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:09:30,382 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:09:30,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:30" (1/1) ... [2022-11-03 04:09:30,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:30" (1/1) ... [2022-11-03 04:09:30,510 INFO L138 Inliner]: procedures = 124, calls = 186, calls flagged for inlining = 54, calls inlined = 45, statements flattened = 843 [2022-11-03 04:09:30,511 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:09:30,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:09:30,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:09:30,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:09:30,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:30" (1/1) ... [2022-11-03 04:09:30,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:30" (1/1) ... [2022-11-03 04:09:30,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:30" (1/1) ... [2022-11-03 04:09:30,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:30" (1/1) ... [2022-11-03 04:09:30,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:30" (1/1) ... [2022-11-03 04:09:30,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:30" (1/1) ... [2022-11-03 04:09:30,587 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:30" (1/1) ... [2022-11-03 04:09:30,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:30" (1/1) ... [2022-11-03 04:09:30,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:09:30,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:09:30,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:09:30,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:09:30,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:30" (1/1) ... [2022-11-03 04:09:30,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:09:30,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:09:30,661 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:09:30,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:09:30,734 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 04:09:30,734 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 04:09:30,734 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 04:09:30,735 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 04:09:30,735 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 04:09:30,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 04:09:30,735 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 04:09:30,735 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 04:09:30,735 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 04:09:30,736 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 04:09:30,736 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 04:09:30,736 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 04:09:30,736 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 04:09:30,736 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 04:09:30,737 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 04:09:30,738 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 04:09:30,738 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 04:09:30,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:09:30,739 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 04:09:30,739 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 04:09:30,739 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 04:09:30,739 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 04:09:30,739 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 04:09:30,740 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 04:09:30,740 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 04:09:30,740 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 04:09:30,741 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 04:09:30,741 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 04:09:30,741 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 04:09:30,741 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 04:09:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:09:30,744 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 04:09:30,744 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 04:09:30,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:09:30,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:09:30,931 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:09:30,945 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:09:31,835 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:09:32,328 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:09:32,328 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 04:09:32,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:32 BoogieIcfgContainer [2022-11-03 04:09:32,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:09:32,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:09:32,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:09:32,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:09:32,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:09:29" (1/3) ... [2022-11-03 04:09:32,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20eade8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:09:32, skipping insertion in model container [2022-11-03 04:09:32,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:30" (2/3) ... [2022-11-03 04:09:32,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20eade8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:09:32, skipping insertion in model container [2022-11-03 04:09:32,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:32" (3/3) ... [2022-11-03 04:09:32,350 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_product13.cil.c [2022-11-03 04:09:32,373 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:09:32,373 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:09:32,443 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:09:32,450 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;@40ed3456, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:09:32,451 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:09:32,458 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 81 states have (on average 1.382716049382716) internal successors, (112), 83 states have internal predecessors, (112), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-11-03 04:09:32,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-03 04:09:32,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:32,471 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-03 04:09:32,472 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:09:32,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:32,477 INFO L85 PathProgramCache]: Analyzing trace with hash -535784109, now seen corresponding path program 1 times [2022-11-03 04:09:32,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:09:32,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976225657] [2022-11-03 04:09:32,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:32,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:09:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:32,841 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 04:09:32,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:09:32,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976225657] [2022-11-03 04:09:32,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976225657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:09:32,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:09:32,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:09:32,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454213587] [2022-11-03 04:09:32,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:09:32,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 04:09:32,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:09:32,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 04:09:32,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:09:32,902 INFO L87 Difference]: Start difference. First operand has 133 states, 81 states have (on average 1.382716049382716) internal successors, (112), 83 states have internal predecessors, (112), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 04:09:33,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:09:33,070 INFO L93 Difference]: Finished difference Result 183 states and 242 transitions. [2022-11-03 04:09:33,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 04:09:33,073 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 50 [2022-11-03 04:09:33,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:09:33,094 INFO L225 Difference]: With dead ends: 183 [2022-11-03 04:09:33,094 INFO L226 Difference]: Without dead ends: 130 [2022-11-03 04:09:33,100 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 [2022-11-03 04:09:33,104 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:09:33,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 156 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:09:33,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-03 04:09:33,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-11-03 04:09:33,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 79 states have (on average 1.3417721518987342) internal successors, (106), 80 states have internal predecessors, (106), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-03 04:09:33,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 175 transitions. [2022-11-03 04:09:33,208 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 175 transitions. Word has length 50 [2022-11-03 04:09:33,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:09:33,210 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 175 transitions. [2022-11-03 04:09:33,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 04:09:33,210 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 175 transitions. [2022-11-03 04:09:33,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-03 04:09:33,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:33,214 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-03 04:09:33,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:09:33,214 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:09:33,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:33,215 INFO L85 PathProgramCache]: Analyzing trace with hash 962366330, now seen corresponding path program 1 times [2022-11-03 04:09:33,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:09:33,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004507822] [2022-11-03 04:09:33,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:33,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:09:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:33,470 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 04:09:33,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:09:33,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004507822] [2022-11-03 04:09:33,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004507822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:09:33,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:09:33,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:09:33,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407242146] [2022-11-03 04:09:33,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:09:33,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:09:33,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:09:33,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:09:33,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:09:33,475 INFO L87 Difference]: Start difference. First operand 130 states and 175 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 04:09:33,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:09:33,598 INFO L93 Difference]: Finished difference Result 179 states and 230 transitions. [2022-11-03 04:09:33,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:09:33,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 51 [2022-11-03 04:09:33,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:09:33,602 INFO L225 Difference]: With dead ends: 179 [2022-11-03 04:09:33,602 INFO L226 Difference]: Without dead ends: 132 [2022-11-03 04:09:33,603 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 [2022-11-03 04:09:33,605 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 0 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:09:33,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 305 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:09:33,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-03 04:09:33,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2022-11-03 04:09:33,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 81 states have (on average 1.3333333333333333) internal successors, (108), 82 states have internal predecessors, (108), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-03 04:09:33,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 177 transitions. [2022-11-03 04:09:33,638 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 177 transitions. Word has length 51 [2022-11-03 04:09:33,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:09:33,639 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 177 transitions. [2022-11-03 04:09:33,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 04:09:33,640 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 177 transitions. [2022-11-03 04:09:33,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-03 04:09:33,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:33,649 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:09:33,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 04:09:33,650 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:09:33,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:33,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1354458489, now seen corresponding path program 1 times [2022-11-03 04:09:33,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:09:33,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48265268] [2022-11-03 04:09:33,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:33,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:09:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:33,879 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 04:09:33,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:09:33,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48265268] [2022-11-03 04:09:33,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48265268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:09:33,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:09:33,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:09:33,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463433091] [2022-11-03 04:09:33,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:09:33,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:09:33,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:09:33,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:09:33,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:09:33,887 INFO L87 Difference]: Start difference. First operand 132 states and 177 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 04:09:34,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:09:34,000 INFO L93 Difference]: Finished difference Result 294 states and 413 transitions. [2022-11-03 04:09:34,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:09:34,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 56 [2022-11-03 04:09:34,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:09:34,004 INFO L225 Difference]: With dead ends: 294 [2022-11-03 04:09:34,004 INFO L226 Difference]: Without dead ends: 180 [2022-11-03 04:09:34,005 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 [2022-11-03 04:09:34,006 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 57 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:09:34,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 316 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:09:34,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-11-03 04:09:34,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 175. [2022-11-03 04:09:34,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 113 states have (on average 1.424778761061947) internal successors, (161), 114 states have internal predecessors, (161), 46 states have call successors, (46), 15 states have call predecessors, (46), 15 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-03 04:09:34,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 252 transitions. [2022-11-03 04:09:34,024 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 252 transitions. Word has length 56 [2022-11-03 04:09:34,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:09:34,025 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 252 transitions. [2022-11-03 04:09:34,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 04:09:34,026 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 252 transitions. [2022-11-03 04:09:34,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-03 04:09:34,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:34,028 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:09:34,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 04:09:34,028 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:09:34,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:34,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1310477890, now seen corresponding path program 1 times [2022-11-03 04:09:34,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:09:34,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845693378] [2022-11-03 04:09:34,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:34,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:09:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:34,221 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 04:09:34,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:09:34,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845693378] [2022-11-03 04:09:34,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845693378] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:09:34,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069634161] [2022-11-03 04:09:34,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:34,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:09:34,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:09:34,225 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:09:34,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 04:09:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:34,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:09:34,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:09:34,669 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 04:09:34,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:09:34,777 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 04:09:34,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069634161] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:09:34,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1683785516] [2022-11-03 04:09:34,804 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2022-11-03 04:09:34,804 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:09:34,810 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:09:34,816 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:09:34,819 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:10:03,638 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-03 04:10:03,959 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 04:10:04,288 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:10:42,589 WARN L234 SmtUtils]: Spent 6.29s on a formula simplification. DAG size of input: 492 DAG size of output: 338 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:10:53,724 WARN L234 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 514 DAG size of output: 307 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:11:17,420 WARN L234 SmtUtils]: Spent 22.49s on a formula simplification. DAG size of input: 582 DAG size of output: 453 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:11:27,850 WARN L234 SmtUtils]: Spent 9.88s on a formula simplification. DAG size of input: 570 DAG size of output: 434 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:11:38,510 WARN L234 SmtUtils]: Spent 10.08s on a formula simplification. DAG size of input: 570 DAG size of output: 396 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:11:49,110 WARN L234 SmtUtils]: Spent 9.99s on a formula simplification. DAG size of input: 568 DAG size of output: 394 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:11:50,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1683785516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:50,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:11:50,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-03 04:11:50,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713904592] [2022-11-03 04:11:50,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:50,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-03 04:11:50,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:11:50,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-03 04:11:50,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-11-03 04:11:50,449 INFO L87 Difference]: Start difference. First operand 175 states and 252 transitions. Second operand has 21 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-03 04:11:59,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:59,341 INFO L93 Difference]: Finished difference Result 429 states and 665 transitions. [2022-11-03 04:11:59,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 04:11:59,342 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 57 [2022-11-03 04:11:59,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:59,346 INFO L225 Difference]: With dead ends: 429 [2022-11-03 04:11:59,346 INFO L226 Difference]: Without dead ends: 272 [2022-11-03 04:11:59,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 106.1s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-11-03 04:11:59,349 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 138 mSDsluCounter, 2253 mSDsCounter, 0 mSdLazyCounter, 1837 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 1850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:59,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 2405 Invalid, 1850 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 1837 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-11-03 04:11:59,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-11-03 04:11:59,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 198. [2022-11-03 04:11:59,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 135 states have (on average 1.4370370370370371) internal successors, (194), 136 states have internal predecessors, (194), 46 states have call successors, (46), 16 states have call predecessors, (46), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-03 04:11:59,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 285 transitions. [2022-11-03 04:11:59,477 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 285 transitions. Word has length 57 [2022-11-03 04:11:59,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:59,478 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 285 transitions. [2022-11-03 04:11:59,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-03 04:11:59,478 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 285 transitions. [2022-11-03 04:11:59,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 04:11:59,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:59,480 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:11:59,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 04:11:59,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:11:59,706 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:11:59,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:59,707 INFO L85 PathProgramCache]: Analyzing trace with hash 2111739251, now seen corresponding path program 1 times [2022-11-03 04:11:59,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:11:59,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274825157] [2022-11-03 04:11:59,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:59,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:11:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:59,855 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 04:11:59,856 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:11:59,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274825157] [2022-11-03 04:11:59,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274825157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:59,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:11:59,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:11:59,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678213628] [2022-11-03 04:11:59,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:59,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:11:59,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:11:59,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:11:59,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:11:59,861 INFO L87 Difference]: Start difference. First operand 198 states and 285 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 04:12:00,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:12:00,127 INFO L93 Difference]: Finished difference Result 489 states and 734 transitions. [2022-11-03 04:12:00,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:12:00,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 62 [2022-11-03 04:12:00,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:12:00,131 INFO L225 Difference]: With dead ends: 489 [2022-11-03 04:12:00,131 INFO L226 Difference]: Without dead ends: 315 [2022-11-03 04:12:00,132 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 [2022-11-03 04:12:00,133 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 55 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:12:00,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 322 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:12:00,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-11-03 04:12:00,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 310. [2022-11-03 04:12:00,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 222 states have (on average 1.4864864864864864) internal successors, (330), 223 states have internal predecessors, (330), 71 states have call successors, (71), 16 states have call predecessors, (71), 16 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2022-11-03 04:12:00,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 471 transitions. [2022-11-03 04:12:00,325 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 471 transitions. Word has length 62 [2022-11-03 04:12:00,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:12:00,326 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 471 transitions. [2022-11-03 04:12:00,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 04:12:00,327 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 471 transitions. [2022-11-03 04:12:00,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-03 04:12:00,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:12:00,329 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:12:00,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 04:12:00,329 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:12:00,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:12:00,330 INFO L85 PathProgramCache]: Analyzing trace with hash -571656565, now seen corresponding path program 1 times [2022-11-03 04:12:00,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:12:00,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811240529] [2022-11-03 04:12:00,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:12:00,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:12:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:12:00,453 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 04:12:00,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:12:00,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811240529] [2022-11-03 04:12:00,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811240529] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:12:00,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285812594] [2022-11-03 04:12:00,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:12:00,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:12:00,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:12:00,455 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:12:00,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 04:12:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:12:00,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:12:00,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:12:00,766 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 04:12:00,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:12:00,842 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 04:12:00,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285812594] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:12:00,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1642906949] [2022-11-03 04:12:00,846 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2022-11-03 04:12:00,846 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:12:00,847 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:12:00,847 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:12:00,847 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:12:33,099 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 04:12:33,393 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-11-03 04:12:33,686 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 249 for LOIs [2022-11-03 04:12:34,393 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 244 for LOIs [2022-11-03 04:12:45,498 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 246 for LOIs [2022-11-03 04:12:45,530 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 246 for LOIs [2022-11-03 04:12:45,568 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 451 for LOIs [2022-11-03 04:12:46,273 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:12:58,917 WARN L234 SmtUtils]: Spent 5.67s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:13:05,068 WARN L234 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:13:30,980 WARN L234 SmtUtils]: Spent 6.34s on a formula simplification. DAG size of input: 492 DAG size of output: 338 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:13:42,213 WARN L234 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 514 DAG size of output: 307 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:14:06,366 WARN L234 SmtUtils]: Spent 22.75s on a formula simplification. DAG size of input: 587 DAG size of output: 458 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:14:48,620 WARN L234 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 561 DAG size of output: 358 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:15:00,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1642906949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:15:00,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:15:00,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [4, 4, 4] total 49 [2022-11-03 04:15:00,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789963047] [2022-11-03 04:15:00,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:15:00,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-03 04:15:00,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:15:00,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-03 04:15:00,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=2195, Unknown=0, NotChecked=0, Total=2352 [2022-11-03 04:15:00,568 INFO L87 Difference]: Start difference. First operand 310 states and 471 transitions. Second operand has 44 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 28 states have internal predecessors, (32), 13 states have call successors, (13), 7 states have call predecessors, (13), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-03 04:15:23,047 WARN L234 SmtUtils]: Spent 20.13s on a formula simplification. DAG size of input: 550 DAG size of output: 436 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:15:55,279 WARN L234 SmtUtils]: Spent 9.44s on a formula simplification. DAG size of input: 584 DAG size of output: 420 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:16:08,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:16:08,563 INFO L93 Difference]: Finished difference Result 750 states and 1189 transitions. [2022-11-03 04:16:08,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-03 04:16:08,565 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 28 states have internal predecessors, (32), 13 states have call successors, (13), 7 states have call predecessors, (13), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 63 [2022-11-03 04:16:08,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:16:08,571 INFO L225 Difference]: With dead ends: 750 [2022-11-03 04:16:08,572 INFO L226 Difference]: Without dead ends: 503 [2022-11-03 04:16:08,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 184.7s TimeCoverageRelationStatistics Valid=240, Invalid=3066, Unknown=0, NotChecked=0, Total=3306 [2022-11-03 04:16:08,574 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 251 mSDsluCounter, 3080 mSDsCounter, 0 mSdLazyCounter, 4231 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 3226 SdHoareTripleChecker+Invalid, 4268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 4231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:16:08,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 3226 Invalid, 4268 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [37 Valid, 4231 Invalid, 0 Unknown, 0 Unchecked, 16.8s Time] [2022-11-03 04:16:08,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-11-03 04:16:08,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 404. [2022-11-03 04:16:08,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 299 states have (on average 1.5117056856187292) internal successors, (452), 303 states have internal predecessors, (452), 83 states have call successors, (83), 22 states have call predecessors, (83), 21 states have return successors, (83), 78 states have call predecessors, (83), 82 states have call successors, (83) [2022-11-03 04:16:08,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 618 transitions. [2022-11-03 04:16:08,837 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 618 transitions. Word has length 63 [2022-11-03 04:16:08,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:16:08,838 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 618 transitions. [2022-11-03 04:16:08,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 28 states have internal predecessors, (32), 13 states have call successors, (13), 7 states have call predecessors, (13), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-03 04:16:08,838 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 618 transitions. [2022-11-03 04:16:08,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-03 04:16:08,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:16:08,841 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:16:08,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 04:16:09,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:16:09,049 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:16:09,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:16:09,050 INFO L85 PathProgramCache]: Analyzing trace with hash 209401985, now seen corresponding path program 1 times [2022-11-03 04:16:09,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:16:09,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576227796] [2022-11-03 04:16:09,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:16:09,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:16:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:16:09,227 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 04:16:09,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:16:09,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576227796] [2022-11-03 04:16:09,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576227796] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:16:09,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778184921] [2022-11-03 04:16:09,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:16:09,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:16:09,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:16:09,230 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:16:09,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 04:16:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:16:09,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:16:09,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:16:09,554 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 04:16:09,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:16:09,620 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 04:16:09,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778184921] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:16:09,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1795298327] [2022-11-03 04:16:09,624 INFO L159 IcfgInterpreter]: Started Sifa with 55 locations of interest [2022-11-03 04:16:09,625 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:16:09,625 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:16:09,625 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:16:09,626 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:17:50,371 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-03 04:17:50,660 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 418 for LOIs [2022-11-03 04:17:50,971 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 211 for LOIs [2022-11-03 04:17:51,030 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 04:17:51,312 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 415 for LOIs [2022-11-03 04:17:51,587 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 232 for LOIs [2022-11-03 04:17:52,136 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 227 for LOIs [2022-11-03 04:18:07,327 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 396 for LOIs [2022-11-03 04:18:07,510 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 228 for LOIs [2022-11-03 04:18:07,544 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 402 for LOIs [2022-11-03 04:18:08,115 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:18:20,403 WARN L234 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 440 DAG size of output: 239 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:18:26,171 WARN L234 SmtUtils]: Spent 5.59s on a formula simplification. DAG size of input: 463 DAG size of output: 259 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:18:50,365 WARN L234 SmtUtils]: Spent 6.32s on a formula simplification. DAG size of input: 492 DAG size of output: 338 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:19:01,524 WARN L234 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 514 DAG size of output: 307 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:19:10,050 WARN L234 SmtUtils]: Spent 7.08s on a formula simplification. DAG size of input: 527 DAG size of output: 384 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:19:24,603 WARN L234 SmtUtils]: Spent 9.79s on a formula simplification. DAG size of input: 529 DAG size of output: 402 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:19:42,961 WARN L234 SmtUtils]: Spent 7.41s on a formula simplification. DAG size of input: 524 DAG size of output: 373 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:20:01,884 WARN L234 SmtUtils]: Spent 8.58s on a formula simplification. DAG size of input: 527 DAG size of output: 308 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:20:15,951 WARN L234 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 417 DAG size of output: 285 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:20:35,394 WARN L234 SmtUtils]: Spent 6.61s on a formula simplification. DAG size of input: 513 DAG size of output: 396 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:20:43,172 WARN L234 SmtUtils]: Spent 7.13s on a formula simplification. DAG size of input: 535 DAG size of output: 418 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:20:59,871 WARN L234 SmtUtils]: Spent 6.77s on a formula simplification. DAG size of input: 561 DAG size of output: 357 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:21:05,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1795298327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:05,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:21:05,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [4, 4, 4] total 54 [2022-11-03 04:21:05,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019343283] [2022-11-03 04:21:05,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:05,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-03 04:21:05,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:21:05,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-03 04:21:05,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2707, Unknown=0, NotChecked=0, Total=2862 [2022-11-03 04:21:05,658 INFO L87 Difference]: Start difference. First operand 404 states and 618 transitions. Second operand has 49 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 28 states have internal predecessors, (32), 15 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 04:21:16,090 WARN L234 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 517 DAG size of output: 352 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:21:58,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:58,481 INFO L93 Difference]: Finished difference Result 825 states and 1294 transitions. [2022-11-03 04:21:58,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-03 04:21:58,482 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 28 states have internal predecessors, (32), 15 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 66 [2022-11-03 04:21:58,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:58,486 INFO L225 Difference]: With dead ends: 825 [2022-11-03 04:21:58,486 INFO L226 Difference]: Without dead ends: 578 [2022-11-03 04:21:58,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 210.7s TimeCoverageRelationStatistics Valid=236, Invalid=3670, Unknown=0, NotChecked=0, Total=3906 [2022-11-03 04:21:58,488 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 304 mSDsluCounter, 3698 mSDsCounter, 0 mSdLazyCounter, 5516 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 3829 SdHoareTripleChecker+Invalid, 5574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 5516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:58,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 3829 Invalid, 5574 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 5516 Invalid, 0 Unknown, 0 Unchecked, 18.8s Time] [2022-11-03 04:21:58,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2022-11-03 04:21:58,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 472. [2022-11-03 04:21:58,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 359 states have (on average 1.5208913649025069) internal successors, (546), 365 states have internal predecessors, (546), 88 states have call successors, (88), 25 states have call predecessors, (88), 24 states have return successors, (88), 81 states have call predecessors, (88), 87 states have call successors, (88) [2022-11-03 04:21:58,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 722 transitions. [2022-11-03 04:21:58,855 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 722 transitions. Word has length 66 [2022-11-03 04:21:58,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:58,856 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 722 transitions. [2022-11-03 04:21:58,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 28 states have internal predecessors, (32), 15 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 04:21:58,856 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 722 transitions. [2022-11-03 04:21:58,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-03 04:21:58,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:58,867 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-03 04:21:58,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 04:21:59,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcaaf16b-1111-407c-8de5-35d61f7c4582/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:21:59,078 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:59,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:59,079 INFO L85 PathProgramCache]: Analyzing trace with hash -304429653, now seen corresponding path program 1 times [2022-11-03 04:21:59,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:21:59,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850935688] [2022-11-03 04:21:59,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:59,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:21:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:59,325 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-03 04:21:59,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:21:59,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850935688] [2022-11-03 04:21:59,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850935688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:59,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:21:59,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:21:59,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358206582] [2022-11-03 04:21:59,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:59,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:21:59,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:21:59,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:21:59,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:21:59,328 INFO L87 Difference]: Start difference. First operand 472 states and 722 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-03 04:21:59,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:59,926 INFO L93 Difference]: Finished difference Result 472 states and 722 transitions. [2022-11-03 04:21:59,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:21:59,927 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 68 [2022-11-03 04:21:59,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:59,927 INFO L225 Difference]: With dead ends: 472 [2022-11-03 04:21:59,927 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 04:21:59,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:21:59,929 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 81 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:59,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 639 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:21:59,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 04:21:59,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 04:21:59,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:21:59,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 04:21:59,931 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 68 [2022-11-03 04:21:59,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:59,931 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 04:21:59,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-03 04:21:59,932 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 04:21:59,932 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 04:21:59,934 INFO L805 garLoopResultBuilder]: Registering result SAFE for location outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 04:21:59,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 04:21:59,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.