./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product05.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product05.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh --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 74a12e124f66b10df64ef68155d31c3be83012aab827a45870f5335a6569b75a --- 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-2329fc7 [2022-12-14 04:48:53,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 04:48:53,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 04:48:53,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 04:48:53,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 04:48:53,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 04:48:53,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 04:48:53,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 04:48:53,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 04:48:53,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 04:48:53,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 04:48:53,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 04:48:53,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 04:48:53,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 04:48:53,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 04:48:53,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 04:48:53,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 04:48:53,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 04:48:53,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 04:48:53,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 04:48:53,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 04:48:53,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 04:48:53,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 04:48:53,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 04:48:53,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 04:48:53,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 04:48:53,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 04:48:53,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 04:48:53,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 04:48:53,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 04:48:53,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 04:48:53,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 04:48:53,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 04:48:53,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 04:48:53,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 04:48:53,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 04:48:53,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 04:48:53,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 04:48:53,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 04:48:53,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 04:48:53,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 04:48:53,858 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 04:48:53,881 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 04:48:53,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 04:48:53,882 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 04:48:53,882 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 04:48:53,883 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 04:48:53,883 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 04:48:53,883 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 04:48:53,883 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 04:48:53,884 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 04:48:53,884 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 04:48:53,884 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 04:48:53,884 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 04:48:53,884 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 04:48:53,884 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 04:48:53,885 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 04:48:53,885 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 04:48:53,885 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 04:48:53,885 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 04:48:53,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 04:48:53,886 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 04:48:53,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 04:48:53,887 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 04:48:53,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 04:48:53,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 04:48:53,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 04:48:53,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 04:48:53,888 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 04:48:53,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 04:48:53,888 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 04:48:53,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 04:48:53,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 04:48:53,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 04:48:53,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:48:53,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 04:48:53,889 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 04:48:53,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 04:48:53,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 04:48:53,890 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 04:48:53,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 04:48:53,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 04:48:53,890 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 04:48:53,890 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_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74a12e124f66b10df64ef68155d31c3be83012aab827a45870f5335a6569b75a [2022-12-14 04:48:54,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 04:48:54,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 04:48:54,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 04:48:54,095 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 04:48:54,095 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 04:48:54,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec0_product05.cil.c [2022-12-14 04:48:56,703 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 04:48:56,888 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 04:48:56,889 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/sv-benchmarks/c/product-lines/email_spec0_product05.cil.c [2022-12-14 04:48:56,909 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/data/b691b7e5a/8a32b9029ea34d1c993fb5f2aa3b2f7c/FLAGd4425e2ee [2022-12-14 04:48:56,923 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/data/b691b7e5a/8a32b9029ea34d1c993fb5f2aa3b2f7c [2022-12-14 04:48:56,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 04:48:56,927 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 04:48:56,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 04:48:56,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 04:48:56,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 04:48:56,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:48:56" (1/1) ... [2022-12-14 04:48:56,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@93e4e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:48:56, skipping insertion in model container [2022-12-14 04:48:56,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:48:56" (1/1) ... [2022-12-14 04:48:56,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 04:48:57,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 04:48:57,171 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:48:57,175 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:48:57,181 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/sv-benchmarks/c/product-lines/email_spec0_product05.cil.c[4289,4302] [2022-12-14 04:48:57,273 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:48:57,346 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:48:57,347 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:48:57,352 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:48:57,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:48:57,371 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 04:48:57,383 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:48:57,384 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:48:57,387 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/sv-benchmarks/c/product-lines/email_spec0_product05.cil.c[4289,4302] [2022-12-14 04:48:57,416 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:48:57,441 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:48:57,442 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:48:57,444 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:48:57,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:48:57,466 INFO L208 MainTranslator]: Completed translation [2022-12-14 04:48:57,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:48:57 WrapperNode [2022-12-14 04:48:57,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 04:48:57,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 04:48:57,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 04:48:57,468 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 04:48:57,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:48:57" (1/1) ... [2022-12-14 04:48:57,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:48:57" (1/1) ... [2022-12-14 04:48:57,528 INFO L138 Inliner]: procedures = 107, calls = 125, calls flagged for inlining = 37, calls inlined = 30, statements flattened = 580 [2022-12-14 04:48:57,528 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 04:48:57,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 04:48:57,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 04:48:57,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 04:48:57,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:48:57" (1/1) ... [2022-12-14 04:48:57,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:48:57" (1/1) ... [2022-12-14 04:48:57,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:48:57" (1/1) ... [2022-12-14 04:48:57,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:48:57" (1/1) ... [2022-12-14 04:48:57,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:48:57" (1/1) ... [2022-12-14 04:48:57,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:48:57" (1/1) ... [2022-12-14 04:48:57,559 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:48:57" (1/1) ... [2022-12-14 04:48:57,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:48:57" (1/1) ... [2022-12-14 04:48:57,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 04:48:57,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 04:48:57,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 04:48:57,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 04:48:57,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:48:57" (1/1) ... [2022-12-14 04:48:57,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:48:57,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:48:57,596 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 04:48:57,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 04:48:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 04:48:57,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 04:48:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 04:48:57,633 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 04:48:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 04:48:57,633 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 04:48:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 04:48:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 04:48:57,633 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 04:48:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 04:48:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 04:48:57,633 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 04:48:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 04:48:57,633 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 04:48:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 04:48:57,634 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 04:48:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 04:48:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 04:48:57,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 04:48:57,767 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 04:48:57,769 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 04:48:58,123 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 04:48:58,247 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 04:48:58,247 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 04:48:58,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:48:58 BoogieIcfgContainer [2022-12-14 04:48:58,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 04:48:58,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 04:48:58,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 04:48:58,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 04:48:58,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:48:56" (1/3) ... [2022-12-14 04:48:58,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c403427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:48:58, skipping insertion in model container [2022-12-14 04:48:58,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:48:57" (2/3) ... [2022-12-14 04:48:58,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c403427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:48:58, skipping insertion in model container [2022-12-14 04:48:58,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:48:58" (3/3) ... [2022-12-14 04:48:58,258 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product05.cil.c [2022-12-14 04:48:58,274 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 04:48:58,274 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 04:48:58,313 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 04:48:58,318 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;@3744fba7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 04:48:58,318 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 04:48:58,322 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 54 states have (on average 1.537037037037037) internal successors, (83), 56 states have internal predecessors, (83), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 04:48:58,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-14 04:48:58,329 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:58,330 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 04:48:58,330 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:48:58,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:48:58,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1196470066, now seen corresponding path program 1 times [2022-12-14 04:48:58,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:48:58,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545723764] [2022-12-14 04:48:58,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:58,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:48:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:58,574 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 04:48:58,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:48:58,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545723764] [2022-12-14 04:48:58,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545723764] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:48:58,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:48:58,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:48:58,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978932038] [2022-12-14 04:48:58,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:48:58,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 04:48:58,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:48:58,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 04:48:58,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 04:48:58,614 INFO L87 Difference]: Start difference. First operand has 77 states, 54 states have (on average 1.537037037037037) internal successors, (83), 56 states have internal predecessors, (83), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-14 04:48:58,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:48:58,679 INFO L93 Difference]: Finished difference Result 120 states and 164 transitions. [2022-12-14 04:48:58,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 04:48:58,682 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 46 [2022-12-14 04:48:58,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:48:58,690 INFO L225 Difference]: With dead ends: 120 [2022-12-14 04:48:58,690 INFO L226 Difference]: Without dead ends: 74 [2022-12-14 04:48:58,693 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 [2022-12-14 04:48:58,696 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:48:58,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:48:58,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-12-14 04:48:58,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-12-14 04:48:58,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 52 states have (on average 1.4807692307692308) internal successors, (77), 53 states have internal predecessors, (77), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-14 04:48:58,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 104 transitions. [2022-12-14 04:48:58,736 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 104 transitions. Word has length 46 [2022-12-14 04:48:58,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:48:58,737 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 104 transitions. [2022-12-14 04:48:58,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-14 04:48:58,738 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 104 transitions. [2022-12-14 04:48:58,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-12-14 04:48:58,740 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:58,740 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 04:48:58,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 04:48:58,741 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:48:58,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:48:58,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1001967542, now seen corresponding path program 1 times [2022-12-14 04:48:58,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:48:58,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854640991] [2022-12-14 04:48:58,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:58,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:48:58,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:58,891 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 04:48:58,891 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:48:58,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854640991] [2022-12-14 04:48:58,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854640991] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:48:58,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:48:58,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:48:58,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787367594] [2022-12-14 04:48:58,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:48:58,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:48:58,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:48:58,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:48:58,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:48:58,895 INFO L87 Difference]: Start difference. First operand 74 states and 104 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-14 04:48:58,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:48:58,950 INFO L93 Difference]: Finished difference Result 116 states and 152 transitions. [2022-12-14 04:48:58,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:48:58,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 47 [2022-12-14 04:48:58,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:48:58,952 INFO L225 Difference]: With dead ends: 116 [2022-12-14 04:48:58,952 INFO L226 Difference]: Without dead ends: 76 [2022-12-14 04:48:58,953 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 [2022-12-14 04:48:58,955 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 0 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:48:58,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 173 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:48:58,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-12-14 04:48:58,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-12-14 04:48:58,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 54 states have (on average 1.462962962962963) internal successors, (79), 55 states have internal predecessors, (79), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-14 04:48:58,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 106 transitions. [2022-12-14 04:48:58,963 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 106 transitions. Word has length 47 [2022-12-14 04:48:58,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:48:58,963 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 106 transitions. [2022-12-14 04:48:58,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-14 04:48:58,964 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 106 transitions. [2022-12-14 04:48:58,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 04:48:58,964 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:58,965 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:48:58,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 04:48:58,965 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:48:58,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:48:58,965 INFO L85 PathProgramCache]: Analyzing trace with hash -616896850, now seen corresponding path program 1 times [2022-12-14 04:48:58,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:48:58,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878976318] [2022-12-14 04:48:58,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:58,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:48:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:59,059 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 04:48:59,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:48:59,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878976318] [2022-12-14 04:48:59,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878976318] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:48:59,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308048533] [2022-12-14 04:48:59,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:59,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:48:59,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:48:59,061 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:48:59,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 04:48:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:59,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:48:59,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:48:59,300 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 04:48:59,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:48:59,343 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 04:48:59,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308048533] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:48:59,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [164104920] [2022-12-14 04:48:59,364 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2022-12-14 04:48:59,364 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:48:59,368 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:48:59,373 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:48:59,374 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:49:05,689 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-12-14 04:49:05,985 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:49:22,321 WARN L233 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 564 DAG size of output: 309 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:49:27,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [164104920] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:49:27,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:49:27,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4, 4, 4] total 19 [2022-12-14 04:49:27,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219877209] [2022-12-14 04:49:27,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:49:27,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 04:49:27,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:49:27,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 04:49:27,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-12-14 04:49:27,536 INFO L87 Difference]: Start difference. First operand 76 states and 106 transitions. Second operand has 14 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-12-14 04:49:29,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:49:29,640 INFO L93 Difference]: Finished difference Result 214 states and 341 transitions. [2022-12-14 04:49:29,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 04:49:29,641 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 51 [2022-12-14 04:49:29,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:49:29,643 INFO L225 Difference]: With dead ends: 214 [2022-12-14 04:49:29,643 INFO L226 Difference]: Without dead ends: 150 [2022-12-14 04:49:29,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-12-14 04:49:29,644 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 96 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:49:29,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 994 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-14 04:49:29,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-12-14 04:49:29,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 97. [2022-12-14 04:49:29,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 75 states have (on average 1.48) internal successors, (111), 76 states have internal predecessors, (111), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-14 04:49:29,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 138 transitions. [2022-12-14 04:49:29,678 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 138 transitions. Word has length 51 [2022-12-14 04:49:29,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:49:29,678 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 138 transitions. [2022-12-14 04:49:29,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-12-14 04:49:29,678 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 138 transitions. [2022-12-14 04:49:29,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 04:49:29,679 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:49:29,679 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:49:29,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 04:49:29,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:49:29,881 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:49:29,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:49:29,883 INFO L85 PathProgramCache]: Analyzing trace with hash -378395783, now seen corresponding path program 1 times [2022-12-14 04:49:29,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:49:29,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442056774] [2022-12-14 04:49:29,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:29,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:49:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:49:29,998 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 04:49:29,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:49:29,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442056774] [2022-12-14 04:49:29,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442056774] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:49:29,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:49:29,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:49:29,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016792145] [2022-12-14 04:49:30,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:49:30,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:49:30,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:49:30,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:49:30,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:49:30,001 INFO L87 Difference]: Start difference. First operand 97 states and 138 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-14 04:49:30,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:49:30,095 INFO L93 Difference]: Finished difference Result 230 states and 341 transitions. [2022-12-14 04:49:30,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:49:30,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 52 [2022-12-14 04:49:30,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:49:30,097 INFO L225 Difference]: With dead ends: 230 [2022-12-14 04:49:30,097 INFO L226 Difference]: Without dead ends: 147 [2022-12-14 04:49:30,097 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 [2022-12-14 04:49:30,098 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 46 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:49:30,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 170 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:49:30,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-12-14 04:49:30,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 142. [2022-12-14 04:49:30,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 120 states have (on average 1.55) internal successors, (186), 121 states have internal predecessors, (186), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-14 04:49:30,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 213 transitions. [2022-12-14 04:49:30,152 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 213 transitions. Word has length 52 [2022-12-14 04:49:30,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:49:30,152 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 213 transitions. [2022-12-14 04:49:30,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-14 04:49:30,152 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 213 transitions. [2022-12-14 04:49:30,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-14 04:49:30,153 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:49:30,153 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:49:30,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 04:49:30,154 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:49:30,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:49:30,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1661376873, now seen corresponding path program 1 times [2022-12-14 04:49:30,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:49:30,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646816600] [2022-12-14 04:49:30,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:30,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:49:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:49:30,221 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 04:49:30,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:49:30,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646816600] [2022-12-14 04:49:30,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646816600] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:49:30,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652174716] [2022-12-14 04:49:30,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:30,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:49:30,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:49:30,223 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:49:30,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 04:49:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:49:30,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:49:30,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:49:30,386 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 04:49:30,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:49:30,420 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 04:49:30,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652174716] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:49:30,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1503915079] [2022-12-14 04:49:30,423 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-12-14 04:49:30,424 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:49:30,424 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:49:30,424 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:49:30,424 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:49:38,231 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-12-14 04:49:38,625 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:49:53,599 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 566 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:50:07,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1503915079] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:50:07,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:50:07,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [4, 4, 4] total 21 [2022-12-14 04:50:07,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644522480] [2022-12-14 04:50:07,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:50:07,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 04:50:07,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:50:07,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 04:50:07,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-12-14 04:50:07,612 INFO L87 Difference]: Start difference. First operand 142 states and 213 transitions. Second operand has 16 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-12-14 04:50:09,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:50:09,542 INFO L93 Difference]: Finished difference Result 344 states and 561 transitions. [2022-12-14 04:50:09,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-14 04:50:09,542 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 53 [2022-12-14 04:50:09,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:50:09,543 INFO L225 Difference]: With dead ends: 344 [2022-12-14 04:50:09,544 INFO L226 Difference]: Without dead ends: 257 [2022-12-14 04:50:09,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 29.0s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-12-14 04:50:09,545 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 154 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 04:50:09,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 838 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-14 04:50:09,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-12-14 04:50:09,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 150. [2022-12-14 04:50:09,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 128 states have (on average 1.546875) internal successors, (198), 129 states have internal predecessors, (198), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-14 04:50:09,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 225 transitions. [2022-12-14 04:50:09,629 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 225 transitions. Word has length 53 [2022-12-14 04:50:09,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:50:09,629 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 225 transitions. [2022-12-14 04:50:09,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-12-14 04:50:09,629 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 225 transitions. [2022-12-14 04:50:09,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-14 04:50:09,630 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:50:09,630 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:50:09,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 04:50:09,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:50:09,832 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:50:09,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:50:09,833 INFO L85 PathProgramCache]: Analyzing trace with hash -698959900, now seen corresponding path program 1 times [2022-12-14 04:50:09,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:50:09,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488527902] [2022-12-14 04:50:09,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:50:09,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:50:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:50:09,950 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 04:50:09,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:50:09,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488527902] [2022-12-14 04:50:09,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488527902] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:50:09,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638245287] [2022-12-14 04:50:09,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:50:09,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:50:09,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:50:09,952 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:50:09,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 04:50:10,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:50:10,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:50:10,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:50:10,130 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 04:50:10,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:50:10,165 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 04:50:10,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638245287] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:50:10,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [583845931] [2022-12-14 04:50:10,169 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2022-12-14 04:50:10,169 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:50:10,170 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:50:10,170 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:50:10,170 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:50:19,468 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 452 for LOIs [2022-12-14 04:50:19,770 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:50:38,376 WARN L233 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 568 DAG size of output: 403 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:50:44,468 WARN L233 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 570 DAG size of output: 422 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:51:03,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [583845931] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:51:03,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:51:03,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [4, 4, 4] total 23 [2022-12-14 04:51:03,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123892742] [2022-12-14 04:51:03,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:51:03,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-14 04:51:03,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:51:03,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-14 04:51:03,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-12-14 04:51:03,838 INFO L87 Difference]: Start difference. First operand 150 states and 225 transitions. Second operand has 18 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-12-14 04:51:06,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:51:06,251 INFO L93 Difference]: Finished difference Result 348 states and 566 transitions. [2022-12-14 04:51:06,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 04:51:06,252 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 55 [2022-12-14 04:51:06,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:51:06,253 INFO L225 Difference]: With dead ends: 348 [2022-12-14 04:51:06,253 INFO L226 Difference]: Without dead ends: 261 [2022-12-14 04:51:06,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 144 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 44.1s TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-12-14 04:51:06,254 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 103 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:51:06,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 772 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-14 04:51:06,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-12-14 04:51:06,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 160. [2022-12-14 04:51:06,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 138 states have (on average 1.5434782608695652) internal successors, (213), 139 states have internal predecessors, (213), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-14 04:51:06,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 240 transitions. [2022-12-14 04:51:06,355 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 240 transitions. Word has length 55 [2022-12-14 04:51:06,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:51:06,356 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 240 transitions. [2022-12-14 04:51:06,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-12-14 04:51:06,356 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 240 transitions. [2022-12-14 04:51:06,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 04:51:06,357 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:51:06,357 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:51:06,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 04:51:06,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 04:51:06,558 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:51:06,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:51:06,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1862585237, now seen corresponding path program 1 times [2022-12-14 04:51:06,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:51:06,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630666484] [2022-12-14 04:51:06,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:51:06,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:51:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:51:06,683 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 04:51:06,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:51:06,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630666484] [2022-12-14 04:51:06,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630666484] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:51:06,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483811887] [2022-12-14 04:51:06,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:51:06,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:51:06,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:51:06,685 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:51:06,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 04:51:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:51:06,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 04:51:06,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:51:06,858 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 04:51:06,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:51:06,898 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 04:51:06,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483811887] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:51:06,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [820663005] [2022-12-14 04:51:06,901 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-12-14 04:51:06,901 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:51:06,901 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:51:06,901 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:51:06,901 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:51:16,496 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-12-14 04:51:16,793 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 246 for LOIs [2022-12-14 04:51:18,119 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 248 for LOIs [2022-12-14 04:51:20,186 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 239 for LOIs [2022-12-14 04:51:20,221 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 481 for LOIs [2022-12-14 04:51:23,324 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 236 for LOIs [2022-12-14 04:51:23,358 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:52:00,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [820663005] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:52:00,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:52:00,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [6, 5, 5] total 42 [2022-12-14 04:52:00,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509127901] [2022-12-14 04:52:00,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:52:00,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-14 04:52:00,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:52:00,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-14 04:52:00,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1606, Unknown=0, NotChecked=0, Total=1722 [2022-12-14 04:52:00,679 INFO L87 Difference]: Start difference. First operand 160 states and 240 transitions. Second operand has 34 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-12-14 04:52:08,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:52:08,253 INFO L93 Difference]: Finished difference Result 420 states and 673 transitions. [2022-12-14 04:52:08,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-14 04:52:08,254 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 56 [2022-12-14 04:52:08,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:52:08,255 INFO L225 Difference]: With dead ends: 420 [2022-12-14 04:52:08,255 INFO L226 Difference]: Without dead ends: 291 [2022-12-14 04:52:08,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 131 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 38.8s TimeCoverageRelationStatistics Valid=124, Invalid=1682, Unknown=0, NotChecked=0, Total=1806 [2022-12-14 04:52:08,256 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 219 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 2344 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1995 SdHoareTripleChecker+Invalid, 2364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-12-14 04:52:08,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 1995 Invalid, 2364 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 2344 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-12-14 04:52:08,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-12-14 04:52:08,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 229. [2022-12-14 04:52:08,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 197 states have (on average 1.598984771573604) internal successors, (315), 199 states have internal predecessors, (315), 20 states have call successors, (20), 12 states have call predecessors, (20), 11 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2022-12-14 04:52:08,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 354 transitions. [2022-12-14 04:52:08,455 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 354 transitions. Word has length 56 [2022-12-14 04:52:08,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:52:08,455 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 354 transitions. [2022-12-14 04:52:08,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-12-14 04:52:08,456 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 354 transitions. [2022-12-14 04:52:08,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-14 04:52:08,457 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:52:08,457 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:52:08,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 04:52:08,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:52:08,659 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:52:08,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:52:08,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1394332737, now seen corresponding path program 1 times [2022-12-14 04:52:08,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:52:08,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081843827] [2022-12-14 04:52:08,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:52:08,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:52:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:52:08,755 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 04:52:08,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:52:08,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081843827] [2022-12-14 04:52:08,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081843827] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:52:08,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726763349] [2022-12-14 04:52:08,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:52:08,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:52:08,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:52:08,756 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:52:08,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 04:52:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:52:08,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:52:08,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:52:08,935 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 04:52:08,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:52:08,971 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 04:52:08,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726763349] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:52:08,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [961356969] [2022-12-14 04:52:08,973 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-12-14 04:52:08,973 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:52:08,973 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:52:08,974 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:52:08,974 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:52:34,145 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-12-14 04:52:34,441 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 248 for LOIs [2022-12-14 04:52:35,773 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 248 for LOIs [2022-12-14 04:52:45,194 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 242 for LOIs [2022-12-14 04:52:45,223 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 241 for LOIs [2022-12-14 04:52:45,259 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 477 for LOIs [2022-12-14 04:52:46,973 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 452 for LOIs [2022-12-14 04:52:47,583 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:54:14,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [961356969] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:54:14,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:54:14,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [4, 4, 4] total 54 [2022-12-14 04:54:14,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002955784] [2022-12-14 04:54:14,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:54:14,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-14 04:54:14,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:54:14,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-14 04:54:14,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=2645, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 04:54:14,061 INFO L87 Difference]: Start difference. First operand 229 states and 354 transitions. Second operand has 49 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 32 states have internal predecessors, (36), 11 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 04:54:44,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:54:44,042 INFO L93 Difference]: Finished difference Result 406 states and 632 transitions. [2022-12-14 04:54:44,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-12-14 04:54:44,043 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 32 states have internal predecessors, (36), 11 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 61 [2022-12-14 04:54:44,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:54:44,044 INFO L225 Difference]: With dead ends: 406 [2022-12-14 04:54:44,044 INFO L226 Difference]: Without dead ends: 319 [2022-12-14 04:54:44,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1067 ImplicationChecksByTransitivity, 110.4s TimeCoverageRelationStatistics Valid=440, Invalid=4116, Unknown=0, NotChecked=0, Total=4556 [2022-12-14 04:54:44,046 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 245 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 2455 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 2484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-12-14 04:54:44,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 1212 Invalid, 2484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2455 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-12-14 04:54:44,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-12-14 04:54:44,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 288. [2022-12-14 04:54:44,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 243 states have (on average 1.559670781893004) internal successors, (379), 246 states have internal predecessors, (379), 28 states have call successors, (28), 18 states have call predecessors, (28), 16 states have return successors, (28), 23 states have call predecessors, (28), 27 states have call successors, (28) [2022-12-14 04:54:44,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 435 transitions. [2022-12-14 04:54:44,271 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 435 transitions. Word has length 61 [2022-12-14 04:54:44,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:54:44,272 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 435 transitions. [2022-12-14 04:54:44,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 32 states have internal predecessors, (36), 11 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 04:54:44,272 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 435 transitions. [2022-12-14 04:54:44,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 04:54:44,273 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:54:44,273 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:54:44,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 04:54:44,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:54:44,475 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:54:44,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:54:44,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1269599765, now seen corresponding path program 1 times [2022-12-14 04:54:44,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:54:44,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024600205] [2022-12-14 04:54:44,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:54:44,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:54:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:54:44,592 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 04:54:44,592 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:54:44,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024600205] [2022-12-14 04:54:44,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024600205] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:54:44,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999170899] [2022-12-14 04:54:44,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:54:44,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:54:44,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:54:44,594 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:54:44,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 04:54:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:54:44,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 04:54:44,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:54:44,769 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 04:54:44,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:54:44,811 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 04:54:44,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999170899] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:54:44,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1130238058] [2022-12-14 04:54:44,814 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-12-14 04:54:44,814 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:54:44,814 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:54:44,814 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:54:44,814 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:55:08,258 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-12-14 04:55:08,544 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 464 for LOIs [2022-12-14 04:55:29,625 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 462 for LOIs [2022-12-14 04:55:42,325 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 242 for LOIs [2022-12-14 04:55:42,354 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 241 for LOIs [2022-12-14 04:55:42,390 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 455 for LOIs [2022-12-14 04:55:43,044 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 445 for LOIs [2022-12-14 04:55:43,650 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:56:30,500 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 557 DAG size of output: 421 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:57:38,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1130238058] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:57:38,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:57:38,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [6, 5, 5] total 57 [2022-12-14 04:57:38,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124630705] [2022-12-14 04:57:38,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:57:38,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-14 04:57:38,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:57:38,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-14 04:57:38,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=2970, Unknown=0, NotChecked=0, Total=3192 [2022-12-14 04:57:38,108 INFO L87 Difference]: Start difference. First operand 288 states and 435 transitions. Second operand has 49 states, 34 states have (on average 1.088235294117647) internal successors, (37), 32 states have internal predecessors, (37), 11 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 04:58:20,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:58:20,255 INFO L93 Difference]: Finished difference Result 486 states and 746 transitions. [2022-12-14 04:58:20,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-12-14 04:58:20,256 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 34 states have (on average 1.088235294117647) internal successors, (37), 32 states have internal predecessors, (37), 11 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 64 [2022-12-14 04:58:20,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:58:20,257 INFO L225 Difference]: With dead ends: 486 [2022-12-14 04:58:20,257 INFO L226 Difference]: Without dead ends: 399 [2022-12-14 04:58:20,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 148.7s TimeCoverageRelationStatistics Valid=449, Invalid=4807, Unknown=0, NotChecked=0, Total=5256 [2022-12-14 04:58:20,259 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 332 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 3106 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 3144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:58:20,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1773 Invalid, 3144 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [38 Valid, 3106 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-12-14 04:58:20,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-12-14 04:58:20,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 320. [2022-12-14 04:58:20,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 275 states have (on average 1.5563636363636364) internal successors, (428), 278 states have internal predecessors, (428), 28 states have call successors, (28), 18 states have call predecessors, (28), 16 states have return successors, (28), 23 states have call predecessors, (28), 27 states have call successors, (28) [2022-12-14 04:58:20,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 484 transitions. [2022-12-14 04:58:20,549 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 484 transitions. Word has length 64 [2022-12-14 04:58:20,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:58:20,549 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 484 transitions. [2022-12-14 04:58:20,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 34 states have (on average 1.088235294117647) internal successors, (37), 32 states have internal predecessors, (37), 11 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 04:58:20,549 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 484 transitions. [2022-12-14 04:58:20,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 04:58:20,550 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:20,550 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:58:20,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 04:58:20,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:58:20,752 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:58:20,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:20,753 INFO L85 PathProgramCache]: Analyzing trace with hash 17486534, now seen corresponding path program 1 times [2022-12-14 04:58:20,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:20,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742427475] [2022-12-14 04:58:20,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:20,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:20,949 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-14 04:58:20,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:58:20,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742427475] [2022-12-14 04:58:20,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742427475] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:58:20,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:58:20,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 04:58:20,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099275542] [2022-12-14 04:58:20,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:58:20,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 04:58:20,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:58:20,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 04:58:20,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:58:20,952 INFO L87 Difference]: Start difference. First operand 320 states and 484 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 04:58:21,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:58:21,634 INFO L93 Difference]: Finished difference Result 383 states and 552 transitions. [2022-12-14 04:58:21,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 04:58:21,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 73 [2022-12-14 04:58:21,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:58:21,635 INFO L225 Difference]: With dead ends: 383 [2022-12-14 04:58:21,636 INFO L226 Difference]: Without dead ends: 318 [2022-12-14 04:58:21,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:58:21,636 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 90 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:58:21,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 210 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:58:21,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-12-14 04:58:21,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 312. [2022-12-14 04:58:21,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 270 states have (on average 1.525925925925926) internal successors, (412), 270 states have internal predecessors, (412), 26 states have call successors, (26), 18 states have call predecessors, (26), 15 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2022-12-14 04:58:21,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 463 transitions. [2022-12-14 04:58:21,898 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 463 transitions. Word has length 73 [2022-12-14 04:58:21,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:58:21,899 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 463 transitions. [2022-12-14 04:58:21,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 04:58:21,899 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 463 transitions. [2022-12-14 04:58:21,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-14 04:58:21,900 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:21,900 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:58:21,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 04:58:21,900 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:58:21,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:21,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1537053742, now seen corresponding path program 1 times [2022-12-14 04:58:21,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:21,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023609491] [2022-12-14 04:58:21,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:21,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:21,988 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 04:58:21,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:58:21,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023609491] [2022-12-14 04:58:21,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023609491] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:58:21,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305703405] [2022-12-14 04:58:21,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:21,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:58:21,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:58:21,990 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:58:21,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 04:58:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:22,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 04:58:22,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:58:22,160 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 04:58:22,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:58:22,208 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 04:58:22,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305703405] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:58:22,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1333253029] [2022-12-14 04:58:22,210 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-12-14 04:58:22,210 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:58:22,211 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:58:22,211 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:58:22,211 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:58:47,333 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-12-14 04:58:47,635 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 248 for LOIs [2022-12-14 04:58:48,963 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 250 for LOIs [2022-12-14 04:58:58,401 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 242 for LOIs [2022-12-14 04:58:58,430 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 241 for LOIs [2022-12-14 04:58:58,466 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 477 for LOIs [2022-12-14 04:59:01,513 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 452 for LOIs [2022-12-14 04:59:02,117 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:00:06,795 WARN L233 SmtUtils]: Spent 8.43s on a formula simplification. DAG size of input: 477 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:00:39,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1333253029] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:00:39,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:00:39,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [6, 5, 5] total 57 [2022-12-14 05:00:39,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683600963] [2022-12-14 05:00:39,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:00:39,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-14 05:00:39,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:00:39,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-14 05:00:39,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=2970, Unknown=0, NotChecked=0, Total=3192 [2022-12-14 05:00:39,360 INFO L87 Difference]: Start difference. First operand 312 states and 463 transitions. Second operand has 49 states, 34 states have (on average 1.088235294117647) internal successors, (37), 32 states have internal predecessors, (37), 11 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 05:01:13,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:01:13,841 INFO L93 Difference]: Finished difference Result 579 states and 862 transitions. [2022-12-14 05:01:13,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-12-14 05:01:13,842 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 34 states have (on average 1.088235294117647) internal successors, (37), 32 states have internal predecessors, (37), 11 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 66 [2022-12-14 05:01:13,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:01:13,843 INFO L225 Difference]: With dead ends: 579 [2022-12-14 05:01:13,843 INFO L226 Difference]: Without dead ends: 473 [2022-12-14 05:01:13,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 146 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 976 ImplicationChecksByTransitivity, 122.9s TimeCoverageRelationStatistics Valid=455, Invalid=4801, Unknown=0, NotChecked=0, Total=5256 [2022-12-14 05:01:13,845 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 219 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 3362 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 3409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 3362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:01:13,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 1839 Invalid, 3409 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 3362 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-12-14 05:01:13,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-12-14 05:01:14,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 332. [2022-12-14 05:01:14,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 290 states have (on average 1.5310344827586206) internal successors, (444), 290 states have internal predecessors, (444), 26 states have call successors, (26), 18 states have call predecessors, (26), 15 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2022-12-14 05:01:14,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 495 transitions. [2022-12-14 05:01:14,167 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 495 transitions. Word has length 66 [2022-12-14 05:01:14,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:01:14,167 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 495 transitions. [2022-12-14 05:01:14,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 34 states have (on average 1.088235294117647) internal successors, (37), 32 states have internal predecessors, (37), 11 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 05:01:14,168 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 495 transitions. [2022-12-14 05:01:14,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-14 05:01:14,168 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:01:14,171 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:01:14,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-14 05:01:14,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:01:14,371 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:01:14,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:01:14,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1131766405, now seen corresponding path program 1 times [2022-12-14 05:01:14,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:01:14,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704092989] [2022-12-14 05:01:14,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:01:14,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:01:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:01:14,405 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 05:01:14,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:01:14,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704092989] [2022-12-14 05:01:14,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704092989] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:01:14,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:01:14,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:01:14,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604010845] [2022-12-14 05:01:14,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:01:14,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:01:14,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:01:14,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:01:14,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:01:14,408 INFO L87 Difference]: Start difference. First operand 332 states and 495 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-14 05:01:15,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:01:15,005 INFO L93 Difference]: Finished difference Result 685 states and 1059 transitions. [2022-12-14 05:01:15,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:01:15,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 67 [2022-12-14 05:01:15,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:01:15,008 INFO L225 Difference]: With dead ends: 685 [2022-12-14 05:01:15,009 INFO L226 Difference]: Without dead ends: 482 [2022-12-14 05:01:15,009 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 [2022-12-14 05:01:15,010 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 39 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:01:15,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 172 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:01:15,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-12-14 05:01:15,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 475. [2022-12-14 05:01:15,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 433 states have (on average 1.5866050808314087) internal successors, (687), 433 states have internal predecessors, (687), 26 states have call successors, (26), 18 states have call predecessors, (26), 15 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2022-12-14 05:01:15,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 738 transitions. [2022-12-14 05:01:15,787 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 738 transitions. Word has length 67 [2022-12-14 05:01:15,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:01:15,787 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 738 transitions. [2022-12-14 05:01:15,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-14 05:01:15,787 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 738 transitions. [2022-12-14 05:01:15,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-14 05:01:15,789 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:01:15,789 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:01:15,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 05:01:15,789 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:01:15,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:01:15,790 INFO L85 PathProgramCache]: Analyzing trace with hash -2106132056, now seen corresponding path program 1 times [2022-12-14 05:01:15,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:01:15,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642296173] [2022-12-14 05:01:15,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:01:15,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:01:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:01:15,866 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 05:01:15,866 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:01:15,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642296173] [2022-12-14 05:01:15,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642296173] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:01:15,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104431913] [2022-12-14 05:01:15,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:01:15,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:01:15,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:01:15,868 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:01:15,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b303942e-6604-447c-baa4-9efa4d296739/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 05:01:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:01:16,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 05:01:16,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:01:16,046 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 05:01:16,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:01:16,094 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 05:01:16,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104431913] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:01:16,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [55885961] [2022-12-14 05:01:16,096 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-12-14 05:01:16,097 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:01:16,097 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:01:16,097 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:01:16,097 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:01:44,885 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-12-14 05:01:45,261 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 466 for LOIs [2022-12-14 05:02:06,754 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 464 for LOIs [2022-12-14 05:02:19,563 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 242 for LOIs [2022-12-14 05:02:19,592 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 241 for LOIs [2022-12-14 05:02:19,627 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 452 for LOIs [2022-12-14 05:02:20,289 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 445 for LOIs [2022-12-14 05:02:20,884 INFO L180 IcfgInterpreter]: Interpretation finished