./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ef3a19-1af1-443f-ae5e-6b090e553979/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ef3a19-1af1-443f-ae5e-6b090e553979/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ef3a19-1af1-443f-ae5e-6b090e553979/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ef3a19-1af1-443f-ae5e-6b090e553979/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ef3a19-1af1-443f-ae5e-6b090e553979/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ef3a19-1af1-443f-ae5e-6b090e553979/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f1bf577a04d9efa22571cde3b0a4348a8cf7d4cfe89b0abb5b80fa76df1bbd4f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:08:22,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:08:22,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:08:22,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:08:22,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:08:22,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:08:22,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:08:22,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:08:22,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:08:22,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:08:22,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:08:22,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:08:22,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:08:22,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:08:22,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:08:22,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:08:22,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:08:22,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:08:22,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:08:22,847 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:08:22,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:08:22,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:08:22,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:08:22,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:08:22,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:08:22,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:08:22,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:08:22,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:08:22,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:08:22,870 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:08:22,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:08:22,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:08:22,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:08:22,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:08:22,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:08:22,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:08:22,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:08:22,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:08:22,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:08:22,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:08:22,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:08:22,883 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ef3a19-1af1-443f-ae5e-6b090e553979/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:08:22,927 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:08:22,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:08:22,928 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:08:22,928 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:08:22,944 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:08:22,945 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:08:22,945 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:08:22,945 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:08:22,945 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:08:22,946 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:08:22,947 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:08:22,947 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:08:22,947 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:08:22,947 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:08:22,948 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:08:22,948 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:08:22,948 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:08:22,948 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:08:22,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:08:22,950 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:08:22,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:08:22,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:08:22,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:08:22,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:08:22,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:08:22,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:08:22,951 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:08:22,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:08:22,952 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:08:22,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:08:22,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:08:22,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:08:22,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:08:22,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:08:22,954 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:08:22,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:08:22,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:08:22,954 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:08:22,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:08:22,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:08:22,956 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:08:22,957 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_05ef3a19-1af1-443f-ae5e-6b090e553979/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ef3a19-1af1-443f-ae5e-6b090e553979/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1bf577a04d9efa22571cde3b0a4348a8cf7d4cfe89b0abb5b80fa76df1bbd4f [2022-11-23 15:08:23,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:08:23,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:08:23,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:08:23,296 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:08:23,297 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:08:23,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ef3a19-1af1-443f-ae5e-6b090e553979/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/email_spec7_product33.cil.c [2022-11-23 15:08:26,414 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:08:26,737 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:08:26,738 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ef3a19-1af1-443f-ae5e-6b090e553979/sv-benchmarks/c/product-lines/email_spec7_product33.cil.c [2022-11-23 15:08:26,772 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ef3a19-1af1-443f-ae5e-6b090e553979/bin/utaipan-Q6hlc19bkW/data/bdc4f4019/91782a8e9b454fb8a3a453891b3c7568/FLAG5d450b837 [2022-11-23 15:08:26,790 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ef3a19-1af1-443f-ae5e-6b090e553979/bin/utaipan-Q6hlc19bkW/data/bdc4f4019/91782a8e9b454fb8a3a453891b3c7568 [2022-11-23 15:08:26,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:08:26,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:08:26,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:08:26,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:08:26,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:08:26,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:08:26" (1/1) ... [2022-11-23 15:08:26,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78873ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:26, skipping insertion in model container [2022-11-23 15:08:26,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:08:26" (1/1) ... [2022-11-23 15:08:26,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:08:26,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:08:27,348 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_05ef3a19-1af1-443f-ae5e-6b090e553979/sv-benchmarks/c/product-lines/email_spec7_product33.cil.c[20852,20865] [2022-11-23 15:08:27,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:08:27,663 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:08:27,753 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_05ef3a19-1af1-443f-ae5e-6b090e553979/sv-benchmarks/c/product-lines/email_spec7_product33.cil.c[20852,20865] [2022-11-23 15:08:27,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:08:27,903 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:08:27,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:27 WrapperNode [2022-11-23 15:08:27,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:08:27,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:08:27,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:08:27,906 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:08:27,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:27" (1/1) ... [2022-11-23 15:08:27,966 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:27" (1/1) ... [2022-11-23 15:08:28,022 INFO L138 Inliner]: procedures = 134, calls = 225, calls flagged for inlining = 65, calls inlined = 60, statements flattened = 1057 [2022-11-23 15:08:28,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:08:28,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:08:28,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:08:28,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:08:28,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:27" (1/1) ... [2022-11-23 15:08:28,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:27" (1/1) ... [2022-11-23 15:08:28,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:27" (1/1) ... [2022-11-23 15:08:28,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:27" (1/1) ... [2022-11-23 15:08:28,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:27" (1/1) ... [2022-11-23 15:08:28,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:27" (1/1) ... [2022-11-23 15:08:28,073 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:27" (1/1) ... [2022-11-23 15:08:28,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:27" (1/1) ... [2022-11-23 15:08:28,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:08:28,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:08:28,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:08:28,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:08:28,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:27" (1/1) ... [2022-11-23 15:08:28,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:08:28,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ef3a19-1af1-443f-ae5e-6b090e553979/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:08:28,136 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ef3a19-1af1-443f-ae5e-6b090e553979/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:08:28,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ef3a19-1af1-443f-ae5e-6b090e553979/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:08:28,190 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-23 15:08:28,190 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-23 15:08:28,191 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-23 15:08:28,191 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-23 15:08:28,191 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-23 15:08:28,191 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-23 15:08:28,191 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-23 15:08:28,192 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-23 15:08:28,192 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-23 15:08:28,192 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-23 15:08:28,192 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-23 15:08:28,193 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-23 15:08:28,193 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-23 15:08:28,193 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-23 15:08:28,193 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-23 15:08:28,193 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-23 15:08:28,194 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-23 15:08:28,194 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-23 15:08:28,194 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-23 15:08:28,194 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-23 15:08:28,195 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-23 15:08:28,195 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-23 15:08:28,196 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-23 15:08:28,196 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-23 15:08:28,197 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-23 15:08:28,197 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-23 15:08:28,198 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-23 15:08:28,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:08:28,198 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-23 15:08:28,199 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-23 15:08:28,201 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-23 15:08:28,201 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-23 15:08:28,201 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-23 15:08:28,201 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-23 15:08:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-23 15:08:28,202 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-23 15:08:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-23 15:08:28,203 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-23 15:08:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-23 15:08:28,203 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-23 15:08:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-23 15:08:28,203 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-23 15:08:28,204 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-23 15:08:28,204 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-23 15:08:28,204 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-23 15:08:28,234 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-23 15:08:28,234 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-23 15:08:28,234 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-23 15:08:28,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:08:28,235 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-23 15:08:28,235 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-23 15:08:28,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:08:28,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:08:28,693 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:08:28,711 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:08:29,817 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:08:30,252 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:08:30,252 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:08:30,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:08:30 BoogieIcfgContainer [2022-11-23 15:08:30,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:08:30,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:08:30,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:08:30,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:08:30,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:08:26" (1/3) ... [2022-11-23 15:08:30,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7191d4b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:08:30, skipping insertion in model container [2022-11-23 15:08:30,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:27" (2/3) ... [2022-11-23 15:08:30,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7191d4b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:08:30, skipping insertion in model container [2022-11-23 15:08:30,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:08:30" (3/3) ... [2022-11-23 15:08:30,265 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_product33.cil.c [2022-11-23 15:08:30,284 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:08:30,284 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:08:30,337 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:08:30,344 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;@3dd45914, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:08:30,344 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:08:30,352 INFO L276 IsEmpty]: Start isEmpty. Operand has 209 states, 121 states have (on average 1.3057851239669422) internal successors, (158), 125 states have internal predecessors, (158), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-23 15:08:30,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 15:08:30,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:08:30,365 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:08:30,366 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:08:30,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:08:30,371 INFO L85 PathProgramCache]: Analyzing trace with hash -460361428, now seen corresponding path program 1 times [2022-11-23 15:08:30,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:08:30,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271351743] [2022-11-23 15:08:30,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:08:30,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:08:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:08:30,793 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:08:30,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:08:30,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271351743] [2022-11-23 15:08:30,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271351743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:08:30,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:08:30,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:08:30,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445813824] [2022-11-23 15:08:30,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:08:30,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:08:30,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:08:30,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:08:30,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:08:30,836 INFO L87 Difference]: Start difference. First operand has 209 states, 121 states have (on average 1.3057851239669422) internal successors, (158), 125 states have internal predecessors, (158), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:08:31,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:08:31,057 INFO L93 Difference]: Finished difference Result 335 states and 442 transitions. [2022-11-23 15:08:31,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:08:31,060 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 77 [2022-11-23 15:08:31,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:08:31,071 INFO L225 Difference]: With dead ends: 335 [2022-11-23 15:08:31,072 INFO L226 Difference]: Without dead ends: 206 [2022-11-23 15:08:31,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:08:31,079 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:08:31,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 239 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:08:31,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-11-23 15:08:31,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2022-11-23 15:08:31,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 119 states have (on average 1.2773109243697478) internal successors, (152), 122 states have internal predecessors, (152), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-23 15:08:31,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 275 transitions. [2022-11-23 15:08:31,141 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 275 transitions. Word has length 77 [2022-11-23 15:08:31,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:08:31,143 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 275 transitions. [2022-11-23 15:08:31,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:08:31,143 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 275 transitions. [2022-11-23 15:08:31,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-23 15:08:31,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:08:31,147 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:08:31,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:08:31,148 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:08:31,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:08:31,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1923992268, now seen corresponding path program 1 times [2022-11-23 15:08:31,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:08:31,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520583038] [2022-11-23 15:08:31,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:08:31,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:08:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:08:31,472 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:08:31,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:08:31,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520583038] [2022-11-23 15:08:31,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520583038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:08:31,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:08:31,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:08:31,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622726706] [2022-11-23 15:08:31,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:08:31,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:08:31,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:08:31,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:08:31,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:08:31,477 INFO L87 Difference]: Start difference. First operand 206 states and 275 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:08:31,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:08:31,639 INFO L93 Difference]: Finished difference Result 331 states and 430 transitions. [2022-11-23 15:08:31,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:08:31,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 78 [2022-11-23 15:08:31,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:08:31,651 INFO L225 Difference]: With dead ends: 331 [2022-11-23 15:08:31,651 INFO L226 Difference]: Without dead ends: 208 [2022-11-23 15:08:31,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:08:31,659 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 0 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:08:31,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 471 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:08:31,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-23 15:08:31,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-11-23 15:08:31,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 121 states have (on average 1.2727272727272727) internal successors, (154), 124 states have internal predecessors, (154), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-23 15:08:31,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 277 transitions. [2022-11-23 15:08:31,681 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 277 transitions. Word has length 78 [2022-11-23 15:08:31,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:08:31,681 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 277 transitions. [2022-11-23 15:08:31,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:08:31,682 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 277 transitions. [2022-11-23 15:08:31,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-23 15:08:31,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:08:31,685 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:08:31,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:08:31,685 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:08:31,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:08:31,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1111025042, now seen corresponding path program 1 times [2022-11-23 15:08:31,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:08:31,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334839934] [2022-11-23 15:08:31,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:08:31,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:08:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:08:31,801 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:08:31,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:08:31,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334839934] [2022-11-23 15:08:31,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334839934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:08:31,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:08:31,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:08:31,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972395833] [2022-11-23 15:08:31,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:08:31,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:08:31,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:08:31,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:08:31,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:08:31,804 INFO L87 Difference]: Start difference. First operand 208 states and 277 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:08:31,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:08:31,932 INFO L93 Difference]: Finished difference Result 446 states and 613 transitions. [2022-11-23 15:08:31,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:08:31,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 83 [2022-11-23 15:08:31,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:08:31,935 INFO L225 Difference]: With dead ends: 446 [2022-11-23 15:08:31,935 INFO L226 Difference]: Without dead ends: 256 [2022-11-23 15:08:31,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:08:31,938 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 57 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:08:31,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 485 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:08:31,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-11-23 15:08:31,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 251. [2022-11-23 15:08:31,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 153 states have (on average 1.3529411764705883) internal successors, (207), 156 states have internal predecessors, (207), 73 states have call successors, (73), 24 states have call predecessors, (73), 24 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-23 15:08:31,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 352 transitions. [2022-11-23 15:08:31,966 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 352 transitions. Word has length 83 [2022-11-23 15:08:31,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:08:31,966 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 352 transitions. [2022-11-23 15:08:31,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:08:31,967 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 352 transitions. [2022-11-23 15:08:31,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-23 15:08:31,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:08:31,971 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:08:31,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:08:31,971 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:08:31,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:08:31,972 INFO L85 PathProgramCache]: Analyzing trace with hash 309841505, now seen corresponding path program 1 times [2022-11-23 15:08:31,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:08:31,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593007755] [2022-11-23 15:08:31,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:08:31,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:08:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:08:32,204 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:08:32,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:08:32,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593007755] [2022-11-23 15:08:32,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593007755] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:08:32,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596829382] [2022-11-23 15:08:32,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:08:32,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:08:32,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ef3a19-1af1-443f-ae5e-6b090e553979/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:08:32,209 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ef3a19-1af1-443f-ae5e-6b090e553979/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:08:32,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ef3a19-1af1-443f-ae5e-6b090e553979/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:08:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:08:32,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:08:32,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:08:32,669 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:08:32,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:08:32,778 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:08:32,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596829382] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:08:32,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1315610630] [2022-11-23 15:08:32,804 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-23 15:08:32,804 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:08:32,809 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:08:32,815 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:08:32,816 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:09:10,399 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-23 15:09:10,829 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-23 15:09:11,162 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 266 for LOIs [2022-11-23 15:09:13,290 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 236 for LOIs [2022-11-23 15:09:13,336 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 268 for LOIs [2022-11-23 15:09:40,775 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 250 for LOIs [2022-11-23 15:09:41,501 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 250 for LOIs [2022-11-23 15:09:41,550 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 451 for LOIs [2022-11-23 15:09:42,163 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 248 for LOIs [2022-11-23 15:09:42,235 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 422 for LOIs [2022-11-23 15:09:42,479 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 472 for LOIs [2022-11-23 15:09:44,445 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:10:02,029 WARN L233 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:10:07,476 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:10:40,950 WARN L233 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 508 DAG size of output: 293 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:10:52,070 WARN L233 SmtUtils]: Spent 10.77s on a formula simplification. DAG size of input: 591 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:11:04,376 WARN L233 SmtUtils]: Spent 7.16s on a formula simplification. DAG size of input: 562 DAG size of output: 373 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:11:09,804 WARN L233 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 564 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:11:15,191 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 560 DAG size of output: 324 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:11:33,241 WARN L233 SmtUtils]: Spent 13.04s on a formula simplification. DAG size of input: 472 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:12:03,483 WARN L233 SmtUtils]: Spent 11.36s on a formula simplification. DAG size of input: 451 DAG size of output: 345 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:12:15,555 WARN L233 SmtUtils]: Spent 11.52s on a formula simplification. DAG size of input: 477 DAG size of output: 361 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:13:07,991 WARN L233 SmtUtils]: Spent 10.12s on a formula simplification. DAG size of input: 585 DAG size of output: 479 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:13:53,239 WARN L233 SmtUtils]: Spent 16.77s on a formula simplification. DAG size of input: 656 DAG size of output: 456 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:14:02,875 WARN L233 SmtUtils]: Spent 8.68s on a formula simplification. DAG size of input: 653 DAG size of output: 424 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:14:02,879 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3617#(and (= ~__ste_Client_Keyring1_User2~0 0) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (= |old(~__ste_email_encryptionKey0~0)| 0) (= 0 |old(~__ste_email_isSignatureVerified1~0)|) (<= 1 |outgoing_outgoing__wrappee__Keys_~msg#1|) (<= |outgoing_outgoing__wrappee__AutoResponder_~receiver~0#1| 2) (= ~__ste_email_subject0~0.offset 0) (<= 0 ~__ste_email_encryptionKey1~0) (= ~__SELECTED_FEATURE_Sign~0 0) (= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_outbuffer3~0 0) (<= |outgoing_outgoing__wrappee__AutoResponder_~tmp~17#1| 2) (<= 1 |outgoing_mail_#in~client#1|) (<= |outgoing_mail_#in~msg#1| 1) (<= 0 (+ |outgoing_outgoing__wrappee__Keys_~tmp~16#1| 2147483648)) (<= 0 (+ 2147483648 |outgoing_getClientId_#res#1|)) (= ~__ste_Client_counter~0 0) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= ~__ste_email_encryptionKey1~0 0) (<= ~__ste_email_isSignatureVerified1~0 0) (<= |old(~__ste_email_to0~0)| 2) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (<= 1 |outgoing_sign_~client#1|) (<= 1 |outgoing_mail_~msg#1|) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (= ~__ste_client_forwardReceiver3~0 0) (<= |outgoing_sign_~privkey~1#1| 2147483647) (= ~__ste_client_name2~0.offset 0) (<= 1 |outgoing_outgoing__wrappee__AutoResponder_~client#1|) (= ~__ste_client_name1~0.base 0) (<= 0 ~__ste_client_autoResponse1~0) (= |outgoing___utac_acc__EncryptVerify_spec__1_~tmp~8#1| 0) (= |outgoing_verify_~__utac__ad__arg1~0#1| |outgoing_verify_~msg#1|) (<= 2 |outgoing_mail_~tmp~15#1|) (= ~__SELECTED_FEATURE_Verify~0 0) (= ~__ste_Client_Keyring1_User0~0 0) (= 0 |old(~__ste_email_isSignatureVerified0~0)|) (<= |outgoing_sign_~msg#1| 1) (<= 2 |old(~__ste_email_to0~0)|) (<= |outgoing_sign_~tmp~24#1| 2147483647) (<= ~__ste_client_idCounter2~0 3) (<= ~queued_message~0 0) (<= ~__ste_email_isSignatureVerified0~0 0) (= ~__ste_email_body1~0.offset 0) (= ~__SELECTED_FEATURE_Encrypt~0 0) (= |outgoing___utac_acc__EncryptVerify_spec__1_~msg#1| |outgoing___utac_acc__EncryptVerify_spec__1_#in~msg#1|) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= |outgoing_outgoing__wrappee__AutoResponder_~tmp___0~6#1| 0) (<= 1 |outgoing___utac_acc__EncryptVerify_spec__1_#in~msg#1|) (<= ~__ste_email_from0~0 2147483647) (= ~__ste_ClientAddressBook_size1~0 0) (= ~__ste_Client_Keyring0_PublicKey0~0 0) (= ~__ste_Email_counter~0 0) (<= |outgoing_incoming_#in~msg#1| 1) (<= |outgoing_sign_~client#1| 1) (= ~__ste_ClientKeyring_size1~0 0) (= |old(~__ste_email_signKey0~0)| 0) (= ~__ste_email_body0~0.offset 0) (<= 1 |outgoing_~client#1|) (<= 0 ~__ste_email_isSigned1~0) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (= ~__ste_ClientAddressBook_size0~0 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (<= |outgoing_getClientId_#res#1| 2147483647) (= ~head~0.offset 0) (= ~__ste_client_name0~0.offset 0) (= |outgoing_#in~msg#1| 1) (<= 1 |outgoing_outgoing__wrappee__Keys_~client#1|) (<= 0 |outgoing_outgoing__wrappee__AutoResponder_~tmp___0~6#1|) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (= |old(~queue_empty~0)| 1) (<= 1 |outgoing_verify_#in~msg#1|) (<= ~__ste_client_privateKey2~0 789) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (= |old(~__ste_email_from0~0)| 0) (<= |outgoing_sign_#in~client#1| 1) (<= ~queue_empty~0 1) (<= 1 |outgoing_incoming_#in~msg#1|) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 1 |outgoing_getClientId_~handle#1|) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (<= 1 |outgoing_outgoing__wrappee__AutoResponder_#in~msg#1|) (<= 0 ~__ste_email_isEncrypted1~0) (= ~__SELECTED_FEATURE_Keys~0 0) (<= ~__ste_email_signKey0~0 2147483647) (= |old(~__ste_email_isSigned0~0)| 0) (= ~__SELECTED_FEATURE_AddressBook~0 0) (= ~__ste_client_forwardReceiver2~0 0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (= ~__SELECTED_FEATURE_Forward~0 0) (<= 0 ~__ste_email_isEncrypted0~0) (= ~__ste_Client_Keyring0_User0~0 0) (<= 1 |outgoing_mail_#in~msg#1|) (<= ~__ste_client_idCounter0~0 2147483647) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isSigned0~0 1) (<= |outgoing_outgoing__wrappee__Keys_~tmp~16#1| 2147483647) (<= ~__ste_email_isEncrypted0~0 0) (= ~__ste_Client_AddressBook0_Alias0~0 0) (<= 1 |outgoing_outgoing__wrappee__Keys_#in~msg#1|) (= ~__ste_email_id0~0 0) (<= ~__ste_client_autoResponse0~0 0) (= ~__ste_Client_Keyring2_User1~0 0) (<= 1 |outgoing_outgoing__wrappee__AutoResponder_#in~client#1|) (<= 3 ~__ste_client_idCounter2~0) (= ~__ste_Client_AddressBook2_Address2~0 0) (= 3 ~chuck~0) (= ~__ste_Client_AddressBook2_Address1~0 0) (<= 0 ~__ste_email_signKey1~0) (<= 1 ~queue_empty~0) (<= ~__ste_email_signKey1~0 0) (<= ~__ste_email_isSigned1~0 0) (= ~bob~0 1) (= ~__ste_client_forwardReceiver1~0 0) (<= 0 ~__ste_client_autoResponse0~0) (= |outgoing_incoming_~privkey~0#1| 0) (<= 0 ~queued_message~0) (= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 0 ~__ste_email_isSignatureVerified1~0) (= |old(~__ste_email_isEncrypted0~0)| 0) (= ~__ste_client_outbuffer0~0 0) (<= |outgoing_outgoing__wrappee__Keys_~client#1| 1) (<= 789 ~__ste_client_privateKey2~0) (<= 1 |outgoing_sign_#in~client#1|) (<= |outgoing_getClientId_#in~handle#1| 1) (<= |outgoing_getClientId_~retValue_acc~26#1| 2147483647) (<= 1 |outgoing_sign_~msg#1|) (<= |outgoing_mail_~tmp~15#1| 2) (<= 1 |outgoing_~msg#1|) (= ~__SELECTED_FEATURE_Base~0 0) (<= |outgoing_outgoing__wrappee__AutoResponder_#in~client#1| 1) (= |old(~__ste_email_signKey1~0)| 0) (= ~__ste_client_forwardReceiver0~0 0) (<= |outgoing_mail_~client#1| 1) (= ~__ste_Client_Keyring2_User0~0 0) (= |outgoing_outgoing__wrappee__AutoResponder_~pubkey~0#1| 0) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (= ~__ste_Client_AddressBook2_Address0~0 0) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~0) (= |old(~queued_message~0)| 0) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (<= 0 ~__ste_email_isSignatureVerified0~0) (= ~__ste_Client_AddressBook1_Address0~0 0) (= ~__ste_client_name2~0.base 0) (<= |outgoing_mail_~msg#1| 1) (= |old(~queued_client~0)| 0) (<= |outgoing_incoming__wrappee__Verify_#in~client#1| 2) (= |outgoing_incoming_~msg#1| |outgoing_incoming__wrappee__Verify_#in~msg#1|) (<= ~__ste_email_encryptionKey0~0 0) (= |outgoing_incoming__wrappee__Verify_~client#1| |outgoing_verify_#in~client#1|) (= ~__ste_email_subject1~0.base 0) (= ~__ste_Client_AddressBook1_Alias0~0 0) (<= |outgoing_mail_#in~client#1| 1) (<= |outgoing_outgoing__wrappee__Keys_#in~client#1| 1) (= ~__ste_Client_Keyring2_User2~0 0) (= |outgoing_incoming__wrappee__Verify_~msg#1| |outgoing_verify_#in~msg#1|) (<= 0 (+ 2147483648 |outgoing_sign_~tmp~24#1|)) (= ~head~0.base 0) (<= 2 |outgoing_outgoing__wrappee__AutoResponder_~receiver~0#1|) (= ~__ste_Client_Keyring1_User1~0 0) (= |#NULL.offset| 0) (<= |outgoing_incoming_~msg#1| 1) (<= |outgoing_sign_#in~msg#1| 1) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= |outgoing_#in~client#1| 1) (<= 1 |outgoing_incoming_~msg#1|) (<= 0 (+ |outgoing_sign_~privkey~1#1| 2147483648)) (<= 0 ~__ste_email_isSigned0~0) (= |outgoing_incoming_~client#1| |outgoing_incoming__wrappee__Verify_#in~client#1|) (<= 0 ~__ste_client_autoResponse2~0) (= ~__ste_email_subject1~0.offset 0) (= ~__ste_Client_AddressBook0_Alias2~0 0) (<= |outgoing_outgoing__wrappee__AutoResponder_#in~msg#1| 1) (= ~__ste_ClientKeyring_size0~0 0) (<= |outgoing___utac_acc__EncryptVerify_spec__1_~msg#1| 1) (<= |outgoing_~msg#1| 1) (<= |outgoing_outgoing__wrappee__AutoResponder_~client#1| 1) (= ~__ste_Client_AddressBook1_Address1~0 0) (<= |outgoing_outgoing__wrappee__Keys_~msg#1| 1) (= 0 ~__ste_Client_AddressBook0_Address0~0) (= ~__ste_client_outbuffer1~0 0) (<= |outgoing_incoming__wrappee__Verify_~msg#1| 1) (<= |outgoing_outgoing__wrappee__AutoResponder_~msg#1| 1) (= |old(~__ste_email_isSigned1~0)| 0) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= ~__ste_email_isEncrypted1~0 0) (= |old(~__ste_email_isEncrypted1~0)| 0) (<= 1 |outgoing_getClientId_#in~handle#1|) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= |outgoing_getClientId_~handle#1| 1) (<= 1 |outgoing_sign_#in~msg#1|) (<= 1 |outgoing_#in~client#1|) (<= 1 |outgoing_outgoing__wrappee__AutoResponder_~msg#1|) (<= |outgoing_~client#1| 1) (= |old(~__ste_email_encryptionKey1~0)| 0) (<= 2 |outgoing_incoming_#in~client#1|) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (= |outgoing_verify_~client#1| |outgoing_verify_#in~client#1|) (= ~__ste_client_outbuffer2~0 0) (<= 1 |outgoing_outgoing__wrappee__Keys_#in~client#1|) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= 2 ~__ste_email_to0~0) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (<= 1 |outgoing_mail_~client#1|) (<= 2 |outgoing_outgoing__wrappee__AutoResponder_~tmp~17#1|) (= ~__ste_ClientAddressBook_size2~0 0) (<= 2 |outgoing_incoming__wrappee__Verify_~client#1|) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (<= ~__ste_client_autoResponse2~0 0) (= ~__ste_email_body1~0.base 0) (= |outgoing_verify_~msg#1| |outgoing_verify_#in~msg#1|) (= ~__ste_ClientKeyring_size2~0 0) (= |outgoing_incoming_~tmp~20#1| |outgoing_incoming_~privkey~0#1|) (<= |outgoing_verify_~client#1| 2) (<= 2 |outgoing_incoming__wrappee__Verify_#in~client#1|) (<= 0 (+ |outgoing_getClientId_~retValue_acc~26#1| 2147483648)) (<= 0 ~__ste_email_encryptionKey0~0) (= |#NULL.base| 0) (<= |outgoing_incoming_#in~client#1| 2) (<= |outgoing_outgoing__wrappee__Keys_#in~msg#1| 1) (<= ~queued_client~0 0))' at error location [2022-11-23 15:14:02,880 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:14:02,880 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:14:02,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-23 15:14:02,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767417128] [2022-11-23 15:14:02,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:14:02,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 15:14:02,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:02,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 15:14:02,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=4344, Unknown=0, NotChecked=0, Total=4556 [2022-11-23 15:14:02,885 INFO L87 Difference]: Start difference. First operand 251 states and 352 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-23 15:14:03,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:03,237 INFO L93 Difference]: Finished difference Result 624 states and 932 transitions. [2022-11-23 15:14:03,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:14:03,238 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 84 [2022-11-23 15:14:03,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:03,244 INFO L225 Difference]: With dead ends: 624 [2022-11-23 15:14:03,244 INFO L226 Difference]: Without dead ends: 501 [2022-11-23 15:14:03,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 186 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1132 ImplicationChecksByTransitivity, 258.4s TimeCoverageRelationStatistics Valid=212, Invalid=4344, Unknown=0, NotChecked=0, Total=4556 [2022-11-23 15:14:03,251 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 216 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:03,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 1096 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:14:03,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-11-23 15:14:03,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 486. [2022-11-23 15:14:03,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 324 states have (on average 1.4907407407407407) internal successors, (483), 327 states have internal predecessors, (483), 137 states have call successors, (137), 24 states have call predecessors, (137), 24 states have return successors, (136), 136 states have call predecessors, (136), 136 states have call successors, (136) [2022-11-23 15:14:03,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 756 transitions. [2022-11-23 15:14:03,293 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 756 transitions. Word has length 84 [2022-11-23 15:14:03,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:03,294 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 756 transitions. [2022-11-23 15:14:03,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-23 15:14:03,294 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 756 transitions. [2022-11-23 15:14:03,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-23 15:14:03,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:03,300 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:03,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ef3a19-1af1-443f-ae5e-6b090e553979/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 15:14:03,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ef3a19-1af1-443f-ae5e-6b090e553979/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:14:03,508 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:03,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:03,508 INFO L85 PathProgramCache]: Analyzing trace with hash -89367720, now seen corresponding path program 1 times [2022-11-23 15:14:03,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:03,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717565733] [2022-11-23 15:14:03,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:03,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:03,643 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:14:03,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:03,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717565733] [2022-11-23 15:14:03,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717565733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:03,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:14:03,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:14:03,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487304913] [2022-11-23 15:14:03,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:03,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:14:03,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:03,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:14:03,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:14:03,646 INFO L87 Difference]: Start difference. First operand 486 states and 756 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:14:03,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:03,783 INFO L93 Difference]: Finished difference Result 1177 states and 1870 transitions. [2022-11-23 15:14:03,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:14:03,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 90 [2022-11-23 15:14:03,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:03,789 INFO L225 Difference]: With dead ends: 1177 [2022-11-23 15:14:03,789 INFO L226 Difference]: Without dead ends: 723 [2022-11-23 15:14:03,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:14:03,792 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 55 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:03,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 490 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:14:03,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2022-11-23 15:14:03,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 718. [2022-11-23 15:14:03,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 492 states have (on average 1.516260162601626) internal successors, (746), 495 states have internal predecessors, (746), 201 states have call successors, (201), 24 states have call predecessors, (201), 24 states have return successors, (200), 200 states have call predecessors, (200), 200 states have call successors, (200) [2022-11-23 15:14:03,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1147 transitions. [2022-11-23 15:14:03,841 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1147 transitions. Word has length 90 [2022-11-23 15:14:03,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:03,841 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 1147 transitions. [2022-11-23 15:14:03,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:14:03,842 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1147 transitions. [2022-11-23 15:14:03,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-23 15:14:03,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:03,849 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:03,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:14:03,850 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:03,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:03,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1043153862, now seen corresponding path program 1 times [2022-11-23 15:14:03,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:03,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201219025] [2022-11-23 15:14:03,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:03,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:03,938 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:14:03,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:03,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201219025] [2022-11-23 15:14:03,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201219025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:03,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:14:03,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:14:03,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535003898] [2022-11-23 15:14:03,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:03,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:14:03,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:03,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:14:03,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:14:03,942 INFO L87 Difference]: Start difference. First operand 718 states and 1147 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:14:04,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:04,102 INFO L93 Difference]: Finished difference Result 1734 states and 2813 transitions. [2022-11-23 15:14:04,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:14:04,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 91 [2022-11-23 15:14:04,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:04,109 INFO L225 Difference]: With dead ends: 1734 [2022-11-23 15:14:04,109 INFO L226 Difference]: Without dead ends: 1078 [2022-11-23 15:14:04,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:14:04,113 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 53 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:04,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 480 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:14:04,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2022-11-23 15:14:04,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 1073. [2022-11-23 15:14:04,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 752 states have (on average 1.5292553191489362) internal successors, (1150), 755 states have internal predecessors, (1150), 296 states have call successors, (296), 24 states have call predecessors, (296), 24 states have return successors, (295), 295 states have call predecessors, (295), 295 states have call successors, (295) [2022-11-23 15:14:04,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1741 transitions. [2022-11-23 15:14:04,185 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1741 transitions. Word has length 91 [2022-11-23 15:14:04,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:04,186 INFO L495 AbstractCegarLoop]: Abstraction has 1073 states and 1741 transitions. [2022-11-23 15:14:04,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:14:04,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1741 transitions. [2022-11-23 15:14:04,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-23 15:14:04,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:04,193 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:04,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:14:04,193 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:04,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:04,194 INFO L85 PathProgramCache]: Analyzing trace with hash -945807222, now seen corresponding path program 1 times [2022-11-23 15:14:04,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:04,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4374062] [2022-11-23 15:14:04,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:04,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:04,278 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:14:04,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:04,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4374062] [2022-11-23 15:14:04,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4374062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:04,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:14:04,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:14:04,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558226361] [2022-11-23 15:14:04,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:04,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:14:04,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:04,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:14:04,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:14:04,281 INFO L87 Difference]: Start difference. First operand 1073 states and 1741 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:14:04,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:04,479 INFO L93 Difference]: Finished difference Result 2532 states and 4157 transitions. [2022-11-23 15:14:04,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:14:04,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 92 [2022-11-23 15:14:04,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:04,488 INFO L225 Difference]: With dead ends: 2532 [2022-11-23 15:14:04,489 INFO L226 Difference]: Without dead ends: 1601 [2022-11-23 15:14:04,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:14:04,492 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 51 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:04,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 474 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:14:04,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2022-11-23 15:14:04,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1596. [2022-11-23 15:14:04,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1152 states have (on average 1.5381944444444444) internal successors, (1772), 1155 states have internal predecessors, (1772), 419 states have call successors, (419), 24 states have call predecessors, (419), 24 states have return successors, (418), 418 states have call predecessors, (418), 418 states have call successors, (418) [2022-11-23 15:14:04,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2609 transitions. [2022-11-23 15:14:04,596 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2609 transitions. Word has length 92 [2022-11-23 15:14:04,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:04,596 INFO L495 AbstractCegarLoop]: Abstraction has 1596 states and 2609 transitions. [2022-11-23 15:14:04,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:14:04,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2609 transitions. [2022-11-23 15:14:04,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-23 15:14:04,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:04,605 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:04,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:14:04,605 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:04,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:04,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2095312197, now seen corresponding path program 1 times [2022-11-23 15:14:04,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:04,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438045453] [2022-11-23 15:14:04,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:04,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:04,688 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:14:04,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:04,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438045453] [2022-11-23 15:14:04,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438045453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:04,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:14:04,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:14:04,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155466051] [2022-11-23 15:14:04,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:04,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:14:04,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:04,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:14:04,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:14:04,691 INFO L87 Difference]: Start difference. First operand 1596 states and 2609 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:14:04,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:04,918 INFO L93 Difference]: Finished difference Result 3742 states and 6185 transitions. [2022-11-23 15:14:04,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:14:04,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 93 [2022-11-23 15:14:04,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:04,932 INFO L225 Difference]: With dead ends: 3742 [2022-11-23 15:14:04,932 INFO L226 Difference]: Without dead ends: 2425 [2022-11-23 15:14:04,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:14:04,938 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 49 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:04,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 476 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:14:04,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2022-11-23 15:14:05,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2420. [2022-11-23 15:14:05,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2420 states, 1797 states have (on average 1.543683917640512) internal successors, (2774), 1800 states have internal predecessors, (2774), 598 states have call successors, (598), 24 states have call predecessors, (598), 24 states have return successors, (597), 597 states have call predecessors, (597), 597 states have call successors, (597) [2022-11-23 15:14:05,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 3969 transitions. [2022-11-23 15:14:05,113 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 3969 transitions. Word has length 93 [2022-11-23 15:14:05,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:05,113 INFO L495 AbstractCegarLoop]: Abstraction has 2420 states and 3969 transitions. [2022-11-23 15:14:05,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:14:05,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 3969 transitions. [2022-11-23 15:14:05,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-23 15:14:05,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:05,125 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:05,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 15:14:05,125 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:05,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:05,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1010142898, now seen corresponding path program 1 times [2022-11-23 15:14:05,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:05,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012244983] [2022-11-23 15:14:05,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:05,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:05,207 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:14:05,207 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:05,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012244983] [2022-11-23 15:14:05,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012244983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:05,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:14:05,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:14:05,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435152931] [2022-11-23 15:14:05,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:05,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:14:05,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:05,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:14:05,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:14:05,210 INFO L87 Difference]: Start difference. First operand 2420 states and 3969 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:14:05,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:05,557 INFO L93 Difference]: Finished difference Result 5953 states and 9857 transitions. [2022-11-23 15:14:05,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:14:05,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 94 [2022-11-23 15:14:05,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:05,579 INFO L225 Difference]: With dead ends: 5953 [2022-11-23 15:14:05,579 INFO L226 Difference]: Without dead ends: 3955 [2022-11-23 15:14:05,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:14:05,586 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 47 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:05,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 488 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:14:05,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2022-11-23 15:14:05,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3950. [2022-11-23 15:14:05,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3950 states, 2951 states have (on average 1.5347339884784819) internal successors, (4529), 2954 states have internal predecessors, (4529), 974 states have call successors, (974), 24 states have call predecessors, (974), 24 states have return successors, (973), 973 states have call predecessors, (973), 973 states have call successors, (973) [2022-11-23 15:14:05,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3950 states to 3950 states and 6476 transitions. [2022-11-23 15:14:05,903 INFO L78 Accepts]: Start accepts. Automaton has 3950 states and 6476 transitions. Word has length 94 [2022-11-23 15:14:05,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:05,904 INFO L495 AbstractCegarLoop]: Abstraction has 3950 states and 6476 transitions. [2022-11-23 15:14:05,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:14:05,904 INFO L276 IsEmpty]: Start isEmpty. Operand 3950 states and 6476 transitions. [2022-11-23 15:14:05,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-23 15:14:05,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:05,921 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:05,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 15:14:05,921 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:05,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:05,922 INFO L85 PathProgramCache]: Analyzing trace with hash 303364225, now seen corresponding path program 1 times [2022-11-23 15:14:05,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:05,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041622131] [2022-11-23 15:14:05,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:05,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:06,009 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:14:06,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:06,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041622131] [2022-11-23 15:14:06,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041622131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:06,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:14:06,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:14:06,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657103243] [2022-11-23 15:14:06,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:06,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:14:06,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:06,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:14:06,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:14:06,012 INFO L87 Difference]: Start difference. First operand 3950 states and 6476 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:14:06,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:06,487 INFO L93 Difference]: Finished difference Result 9814 states and 16254 transitions. [2022-11-23 15:14:06,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:14:06,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 95 [2022-11-23 15:14:06,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:06,524 INFO L225 Difference]: With dead ends: 9814 [2022-11-23 15:14:06,524 INFO L226 Difference]: Without dead ends: 6552 [2022-11-23 15:14:06,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:14:06,537 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 45 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:06,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 479 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:14:06,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6552 states. [2022-11-23 15:14:07,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6552 to 6547. [2022-11-23 15:14:07,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6547 states, 4942 states have (on average 1.5317685147713476) internal successors, (7570), 4945 states have internal predecessors, (7570), 1580 states have call successors, (1580), 24 states have call predecessors, (1580), 24 states have return successors, (1579), 1579 states have call predecessors, (1579), 1579 states have call successors, (1579) [2022-11-23 15:14:07,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6547 states to 6547 states and 10729 transitions. [2022-11-23 15:14:07,125 INFO L78 Accepts]: Start accepts. Automaton has 6547 states and 10729 transitions. Word has length 95 [2022-11-23 15:14:07,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:07,126 INFO L495 AbstractCegarLoop]: Abstraction has 6547 states and 10729 transitions. [2022-11-23 15:14:07,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:14:07,126 INFO L276 IsEmpty]: Start isEmpty. Operand 6547 states and 10729 transitions. [2022-11-23 15:14:07,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-23 15:14:07,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:07,146 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:07,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 15:14:07,147 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:07,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:07,147 INFO L85 PathProgramCache]: Analyzing trace with hash 902535200, now seen corresponding path program 1 times [2022-11-23 15:14:07,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:07,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271694959] [2022-11-23 15:14:07,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:07,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:07,235 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:14:07,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:07,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271694959] [2022-11-23 15:14:07,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271694959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:07,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:14:07,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:14:07,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489474685] [2022-11-23 15:14:07,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:07,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:14:07,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:07,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:14:07,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:14:07,238 INFO L87 Difference]: Start difference. First operand 6547 states and 10729 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:14:08,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:08,034 INFO L93 Difference]: Finished difference Result 17066 states and 28172 transitions. [2022-11-23 15:14:08,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:14:08,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 96 [2022-11-23 15:14:08,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:08,235 INFO L225 Difference]: With dead ends: 17066 [2022-11-23 15:14:08,236 INFO L226 Difference]: Without dead ends: 11496 [2022-11-23 15:14:08,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:14:08,252 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 43 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:08,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 485 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:14:08,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11496 states. [2022-11-23 15:14:09,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11496 to 11491. [2022-11-23 15:14:09,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11491 states, 8683 states have (on average 1.5191754002073017) internal successors, (13191), 8686 states have internal predecessors, (13191), 2783 states have call successors, (2783), 24 states have call predecessors, (2783), 24 states have return successors, (2782), 2782 states have call predecessors, (2782), 2782 states have call successors, (2782) [2022-11-23 15:14:09,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11491 states to 11491 states and 18756 transitions. [2022-11-23 15:14:09,311 INFO L78 Accepts]: Start accepts. Automaton has 11491 states and 18756 transitions. Word has length 96 [2022-11-23 15:14:09,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:09,311 INFO L495 AbstractCegarLoop]: Abstraction has 11491 states and 18756 transitions. [2022-11-23 15:14:09,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:14:09,312 INFO L276 IsEmpty]: Start isEmpty. Operand 11491 states and 18756 transitions. [2022-11-23 15:14:09,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-23 15:14:09,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:09,341 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:09,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 15:14:09,342 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:09,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:09,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1765430496, now seen corresponding path program 1 times [2022-11-23 15:14:09,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:09,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986673030] [2022-11-23 15:14:09,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:09,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:09,428 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:14:09,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:09,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986673030] [2022-11-23 15:14:09,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986673030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:09,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:14:09,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:14:09,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314783592] [2022-11-23 15:14:09,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:09,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:14:09,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:09,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:14:09,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:14:09,431 INFO L87 Difference]: Start difference. First operand 11491 states and 18756 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:14:10,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:10,861 INFO L93 Difference]: Finished difference Result 30385 states and 49938 transitions. [2022-11-23 15:14:10,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:14:10,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 97 [2022-11-23 15:14:10,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:10,941 INFO L225 Difference]: With dead ends: 30385 [2022-11-23 15:14:10,941 INFO L226 Difference]: Without dead ends: 20323 [2022-11-23 15:14:10,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:14:10,975 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 41 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:10,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 479 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:14:10,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20323 states. [2022-11-23 15:14:13,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20323 to 20318. [2022-11-23 15:14:13,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20318 states, 15471 states have (on average 1.5118609010406567) internal successors, (23390), 15474 states have internal predecessors, (23390), 4822 states have call successors, (4822), 24 states have call predecessors, (4822), 24 states have return successors, (4821), 4821 states have call predecessors, (4821), 4821 states have call successors, (4821) [2022-11-23 15:14:13,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20318 states to 20318 states and 33033 transitions. [2022-11-23 15:14:13,273 INFO L78 Accepts]: Start accepts. Automaton has 20318 states and 33033 transitions. Word has length 97 [2022-11-23 15:14:13,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:13,275 INFO L495 AbstractCegarLoop]: Abstraction has 20318 states and 33033 transitions. [2022-11-23 15:14:13,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:14:13,275 INFO L276 IsEmpty]: Start isEmpty. Operand 20318 states and 33033 transitions. [2022-11-23 15:14:13,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-23 15:14:13,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:13,308 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:13,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 15:14:13,309 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:13,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:13,311 INFO L85 PathProgramCache]: Analyzing trace with hash -44680194, now seen corresponding path program 1 times [2022-11-23 15:14:13,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:13,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586690302] [2022-11-23 15:14:13,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:13,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:13,421 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:14:13,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:13,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586690302] [2022-11-23 15:14:13,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586690302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:13,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:14:13,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:14:13,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995053457] [2022-11-23 15:14:13,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:13,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:14:13,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:13,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:14:13,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:14:13,424 INFO L87 Difference]: Start difference. First operand 20318 states and 33033 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:14:16,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:16,152 INFO L93 Difference]: Finished difference Result 55097 states and 90030 transitions. [2022-11-23 15:14:16,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:14:16,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 98 [2022-11-23 15:14:16,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:16,325 INFO L225 Difference]: With dead ends: 55097 [2022-11-23 15:14:16,325 INFO L226 Difference]: Without dead ends: 36763 [2022-11-23 15:14:16,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:14:16,387 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 39 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:16,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 481 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:14:16,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36763 states. [2022-11-23 15:14:19,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36763 to 36758. [2022-11-23 15:14:19,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36758 states, 28196 states have (on average 1.5014186409419776) internal successors, (42334), 28199 states have internal predecessors, (42334), 8537 states have call successors, (8537), 24 states have call predecessors, (8537), 24 states have return successors, (8536), 8536 states have call predecessors, (8536), 8536 states have call successors, (8536) [2022-11-23 15:14:19,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36758 states to 36758 states and 59407 transitions. [2022-11-23 15:14:19,969 INFO L78 Accepts]: Start accepts. Automaton has 36758 states and 59407 transitions. Word has length 98 [2022-11-23 15:14:19,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:19,970 INFO L495 AbstractCegarLoop]: Abstraction has 36758 states and 59407 transitions. [2022-11-23 15:14:19,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:14:19,970 INFO L276 IsEmpty]: Start isEmpty. Operand 36758 states and 59407 transitions. [2022-11-23 15:14:20,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-23 15:14:20,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:20,019 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:20,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 15:14:20,020 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:20,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:20,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1155216960, now seen corresponding path program 1 times [2022-11-23 15:14:20,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:20,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34075397] [2022-11-23 15:14:20,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:20,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:20,139 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:14:20,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:20,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34075397] [2022-11-23 15:14:20,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34075397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:20,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:14:20,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:14:20,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229811145] [2022-11-23 15:14:20,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:20,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:14:20,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:20,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:14:20,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:14:20,144 INFO L87 Difference]: Start difference. First operand 36758 states and 59407 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:14:24,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:24,792 INFO L93 Difference]: Finished difference Result 67714 states and 109611 transitions. [2022-11-23 15:14:24,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:14:24,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 99 [2022-11-23 15:14:24,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:25,104 INFO L225 Difference]: With dead ends: 67714 [2022-11-23 15:14:25,104 INFO L226 Difference]: Without dead ends: 67591 [2022-11-23 15:14:25,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:14:25,133 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 37 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:25,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 479 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:14:25,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67591 states. [2022-11-23 15:14:29,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67591 to 67586. [2022-11-23 15:14:29,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67586 states, 52225 states have (on average 1.4876017233125898) internal successors, (77690), 52228 states have internal predecessors, (77690), 15336 states have call successors, (15336), 24 states have call predecessors, (15336), 24 states have return successors, (15335), 15335 states have call predecessors, (15335), 15335 states have call successors, (15335) [2022-11-23 15:14:29,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67586 states to 67586 states and 108361 transitions. [2022-11-23 15:14:29,831 INFO L78 Accepts]: Start accepts. Automaton has 67586 states and 108361 transitions. Word has length 99 [2022-11-23 15:14:29,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:29,831 INFO L495 AbstractCegarLoop]: Abstraction has 67586 states and 108361 transitions. [2022-11-23 15:14:29,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:14:29,832 INFO L276 IsEmpty]: Start isEmpty. Operand 67586 states and 108361 transitions. [2022-11-23 15:14:29,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-23 15:14:29,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:29,864 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:29,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 15:14:29,864 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:29,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:29,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1975911455, now seen corresponding path program 1 times [2022-11-23 15:14:29,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:29,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767677245] [2022-11-23 15:14:29,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:29,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:31,578 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:14:31,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:31,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767677245] [2022-11-23 15:14:31,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767677245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:31,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:14:31,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-23 15:14:31,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592450875] [2022-11-23 15:14:31,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:31,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-23 15:14:31,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:31,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-23 15:14:31,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-11-23 15:14:31,580 INFO L87 Difference]: Start difference. First operand 67586 states and 108361 transitions. Second operand has 19 states, 14 states have (on average 4.214285714285714) internal successors, (59), 16 states have internal predecessors, (59), 10 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 9 states have call predecessors, (16), 9 states have call successors, (16) [2022-11-23 15:14:37,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:37,772 INFO L93 Difference]: Finished difference Result 67778 states and 108619 transitions. [2022-11-23 15:14:37,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-23 15:14:37,773 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 14 states have (on average 4.214285714285714) internal successors, (59), 16 states have internal predecessors, (59), 10 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 9 states have call predecessors, (16), 9 states have call successors, (16) Word has length 100 [2022-11-23 15:14:37,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:38,181 INFO L225 Difference]: With dead ends: 67778 [2022-11-23 15:14:38,181 INFO L226 Difference]: Without dead ends: 67731 [2022-11-23 15:14:38,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=179, Invalid=1011, Unknown=0, NotChecked=0, Total=1190 [2022-11-23 15:14:38,205 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 609 mSDsluCounter, 2586 mSDsCounter, 0 mSdLazyCounter, 2982 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 2870 SdHoareTripleChecker+Invalid, 3275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 2982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:38,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 2870 Invalid, 3275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 2982 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-23 15:14:38,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67731 states.