./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 15275a4436f6ed835fc824ec788a3589ee34ef53cd98082c25cb994e481acd9a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:48:32,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:48:32,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:48:32,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:48:32,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:48:32,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:48:32,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:48:33,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:48:33,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:48:33,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:48:33,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:48:33,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:48:33,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:48:33,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:48:33,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:48:33,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:48:33,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:48:33,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:48:33,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:48:33,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:48:33,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:48:33,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:48:33,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:48:33,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:48:33,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:48:33,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:48:33,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:48:33,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:48:33,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:48:33,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:48:33,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:48:33,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:48:33,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:48:33,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:48:33,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:48:33,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:48:33,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:48:33,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:48:33,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:48:33,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:48:33,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:48:33,067 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:48:33,105 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:48:33,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:48:33,110 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:48:33,111 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:48:33,112 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:48:33,112 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:48:33,112 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:48:33,113 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:48:33,113 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:48:33,113 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:48:33,114 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:48:33,115 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:48:33,115 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:48:33,115 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:48:33,116 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:48:33,116 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:48:33,116 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:48:33,117 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:48:33,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:48:33,118 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:48:33,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:48:33,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:48:33,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:48:33,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:48:33,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:48:33,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:48:33,121 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:48:33,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:48:33,122 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:48:33,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:48:33,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:48:33,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:48:33,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:48:33,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:48:33,124 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:48:33,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:48:33,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:48:33,125 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:48:33,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:48:33,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:48:33,126 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:48:33,126 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_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15275a4436f6ed835fc824ec788a3589ee34ef53cd98082c25cb994e481acd9a [2022-11-03 02:48:33,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:48:33,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:48:33,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:48:33,474 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:48:33,475 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:48:33,477 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec8_product30.cil.c [2022-11-03 02:48:33,571 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI/data/f136b8ee2/2a511385d7df4540a70a01420d496e34/FLAGf7e792db0 [2022-11-03 02:48:34,237 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:48:34,238 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/sv-benchmarks/c/product-lines/email_spec8_product30.cil.c [2022-11-03 02:48:34,262 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI/data/f136b8ee2/2a511385d7df4540a70a01420d496e34/FLAGf7e792db0 [2022-11-03 02:48:34,447 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI/data/f136b8ee2/2a511385d7df4540a70a01420d496e34 [2022-11-03 02:48:34,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:48:34,451 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:48:34,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:48:34,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:48:34,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:48:34,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:48:34" (1/1) ... [2022-11-03 02:48:34,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4490607e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:34, skipping insertion in model container [2022-11-03 02:48:34,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:48:34" (1/1) ... [2022-11-03 02:48:34,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:48:34,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:48:34,948 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/sv-benchmarks/c/product-lines/email_spec8_product30.cil.c[7858,7871] [2022-11-03 02:48:35,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:48:35,339 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:48:35,364 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/sv-benchmarks/c/product-lines/email_spec8_product30.cil.c[7858,7871] [2022-11-03 02:48:35,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:48:35,465 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:48:35,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:35 WrapperNode [2022-11-03 02:48:35,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:48:35,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:48:35,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:48:35,467 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:48:35,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:35" (1/1) ... [2022-11-03 02:48:35,524 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:35" (1/1) ... [2022-11-03 02:48:35,593 INFO L138 Inliner]: procedures = 132, calls = 223, calls flagged for inlining = 61, calls inlined = 51, statements flattened = 923 [2022-11-03 02:48:35,595 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:48:35,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:48:35,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:48:35,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:48:35,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:35" (1/1) ... [2022-11-03 02:48:35,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:35" (1/1) ... [2022-11-03 02:48:35,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:35" (1/1) ... [2022-11-03 02:48:35,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:35" (1/1) ... [2022-11-03 02:48:35,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:35" (1/1) ... [2022-11-03 02:48:35,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:35" (1/1) ... [2022-11-03 02:48:35,700 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:35" (1/1) ... [2022-11-03 02:48:35,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:35" (1/1) ... [2022-11-03 02:48:35,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:48:35,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:48:35,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:48:35,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:48:35,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:35" (1/1) ... [2022-11-03 02:48:35,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:48:35,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:48:35,774 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:48:35,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:48:35,828 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-03 02:48:35,828 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-03 02:48:35,828 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 02:48:35,829 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 02:48:35,829 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 02:48:35,829 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 02:48:35,829 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 02:48:35,830 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 02:48:35,830 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 02:48:35,830 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 02:48:35,830 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 02:48:35,830 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 02:48:35,831 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 02:48:35,831 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 02:48:35,831 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 02:48:35,831 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 02:48:35,831 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 02:48:35,831 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 02:48:35,832 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 02:48:35,832 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 02:48:35,832 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 02:48:35,832 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 02:48:35,832 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 02:48:35,833 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 02:48:35,833 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 02:48:35,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:48:35,833 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 02:48:35,834 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 02:48:35,834 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-03 02:48:35,834 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-03 02:48:35,834 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 02:48:35,834 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 02:48:35,835 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 02:48:35,835 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 02:48:35,835 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 02:48:35,835 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 02:48:35,836 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-03 02:48:35,836 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-03 02:48:35,836 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 02:48:35,836 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 02:48:35,836 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 02:48:35,836 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 02:48:35,837 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 02:48:35,837 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 02:48:35,837 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 02:48:35,838 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 02:48:35,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:48:35,839 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 02:48:35,840 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 02:48:35,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:48:35,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:48:36,064 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:48:36,066 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:48:37,102 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:48:37,723 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:48:37,724 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:48:37,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:48:37 BoogieIcfgContainer [2022-11-03 02:48:37,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:48:37,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:48:37,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:48:37,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:48:37,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:48:34" (1/3) ... [2022-11-03 02:48:37,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571f2541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:48:37, skipping insertion in model container [2022-11-03 02:48:37,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:35" (2/3) ... [2022-11-03 02:48:37,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571f2541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:48:37, skipping insertion in model container [2022-11-03 02:48:37,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:48:37" (3/3) ... [2022-11-03 02:48:37,741 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec8_product30.cil.c [2022-11-03 02:48:37,767 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:48:37,768 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:48:37,856 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:48:37,864 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;@a66e05d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:48:37,865 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:48:37,874 INFO L276 IsEmpty]: Start isEmpty. Operand has 189 states, 111 states have (on average 1.3333333333333333) internal successors, (148), 115 states have internal predecessors, (148), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-03 02:48:37,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-03 02:48:37,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:37,901 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:48:37,902 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:37,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:37,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1055290707, now seen corresponding path program 1 times [2022-11-03 02:48:37,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:48:37,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018069709] [2022-11-03 02:48:37,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:37,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:48:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:38,358 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:48:38,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:48:38,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018069709] [2022-11-03 02:48:38,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018069709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:38,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:48:38,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:48:38,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968628538] [2022-11-03 02:48:38,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:38,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:48:38,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:48:38,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:48:38,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:48:38,409 INFO L87 Difference]: Start difference. First operand has 189 states, 111 states have (on average 1.3333333333333333) internal successors, (148), 115 states have internal predecessors, (148), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:48:38,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:38,623 INFO L93 Difference]: Finished difference Result 295 states and 386 transitions. [2022-11-03 02:48:38,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:48:38,626 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 64 [2022-11-03 02:48:38,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:38,639 INFO L225 Difference]: With dead ends: 295 [2022-11-03 02:48:38,639 INFO L226 Difference]: Without dead ends: 186 [2022-11-03 02:48:38,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:48:38,648 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:38,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 216 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:48:38,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-11-03 02:48:38,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2022-11-03 02:48:38,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 109 states have (on average 1.3027522935779816) internal successors, (142), 112 states have internal predecessors, (142), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-03 02:48:38,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 247 transitions. [2022-11-03 02:48:38,729 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 247 transitions. Word has length 64 [2022-11-03 02:48:38,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:38,731 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 247 transitions. [2022-11-03 02:48:38,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:48:38,732 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 247 transitions. [2022-11-03 02:48:38,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 02:48:38,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:38,736 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:48:38,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:48:38,736 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:38,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:38,737 INFO L85 PathProgramCache]: Analyzing trace with hash -925805460, now seen corresponding path program 1 times [2022-11-03 02:48:38,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:48:38,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52797068] [2022-11-03 02:48:38,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:38,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:48:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:39,013 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:48:39,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:48:39,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52797068] [2022-11-03 02:48:39,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52797068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:39,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:48:39,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:48:39,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507438300] [2022-11-03 02:48:39,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:39,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:48:39,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:48:39,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:48:39,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:48:39,018 INFO L87 Difference]: Start difference. First operand 186 states and 247 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:48:39,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:39,142 INFO L93 Difference]: Finished difference Result 291 states and 374 transitions. [2022-11-03 02:48:39,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:48:39,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 65 [2022-11-03 02:48:39,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:39,145 INFO L225 Difference]: With dead ends: 291 [2022-11-03 02:48:39,145 INFO L226 Difference]: Without dead ends: 188 [2022-11-03 02:48:39,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:48:39,148 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 0 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:39,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 425 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:48:39,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-03 02:48:39,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2022-11-03 02:48:39,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 111 states have (on average 1.2972972972972974) internal successors, (144), 114 states have internal predecessors, (144), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-03 02:48:39,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 249 transitions. [2022-11-03 02:48:39,176 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 249 transitions. Word has length 65 [2022-11-03 02:48:39,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:39,178 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 249 transitions. [2022-11-03 02:48:39,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:48:39,178 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 249 transitions. [2022-11-03 02:48:39,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-03 02:48:39,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:39,189 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:48:39,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:48:39,190 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:39,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:39,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1367198352, now seen corresponding path program 1 times [2022-11-03 02:48:39,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:48:39,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972125109] [2022-11-03 02:48:39,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:39,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:48:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:39,455 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:48:39,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:48:39,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972125109] [2022-11-03 02:48:39,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972125109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:39,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:48:39,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:48:39,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864850031] [2022-11-03 02:48:39,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:39,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:48:39,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:48:39,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:48:39,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:48:39,465 INFO L87 Difference]: Start difference. First operand 188 states and 249 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:48:39,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:39,630 INFO L93 Difference]: Finished difference Result 406 states and 557 transitions. [2022-11-03 02:48:39,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:48:39,632 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 70 [2022-11-03 02:48:39,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:39,637 INFO L225 Difference]: With dead ends: 406 [2022-11-03 02:48:39,637 INFO L226 Difference]: Without dead ends: 236 [2022-11-03 02:48:39,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:48:39,649 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 57 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:39,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 438 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:48:39,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-03 02:48:39,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 231. [2022-11-03 02:48:39,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 143 states have (on average 1.3776223776223777) internal successors, (197), 146 states have internal predecessors, (197), 64 states have call successors, (64), 23 states have call predecessors, (64), 23 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-11-03 02:48:39,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 324 transitions. [2022-11-03 02:48:39,696 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 324 transitions. Word has length 70 [2022-11-03 02:48:39,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:39,699 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 324 transitions. [2022-11-03 02:48:39,699 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:48:39,699 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 324 transitions. [2022-11-03 02:48:39,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-03 02:48:39,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:39,704 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:48:39,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:48:39,705 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:39,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:39,706 INFO L85 PathProgramCache]: Analyzing trace with hash -638375357, now seen corresponding path program 1 times [2022-11-03 02:48:39,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:48:39,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013689406] [2022-11-03 02:48:39,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:39,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:48:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:39,925 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:48:39,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:48:39,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013689406] [2022-11-03 02:48:39,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013689406] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:48:39,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271901488] [2022-11-03 02:48:39,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:39,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:48:39,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:48:39,929 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:48:39,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:48:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:40,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:48:40,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:40,431 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:48:40,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:48:40,548 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:48:40,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271901488] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:48:40,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1941355739] [2022-11-03 02:48:40,580 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-11-03 02:48:40,584 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:48:40,592 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:48:40,598 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:48:40,599 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:49:29,957 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-03 02:49:30,258 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-11-03 02:49:30,576 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 271 for LOIs [2022-11-03 02:49:32,724 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 239 for LOIs [2022-11-03 02:49:32,763 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 273 for LOIs [2022-11-03 02:49:52,103 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 231 for LOIs [2022-11-03 02:49:52,142 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 252 for LOIs [2022-11-03 02:49:52,212 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 257 for LOIs [2022-11-03 02:49:52,255 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 477 for LOIs [2022-11-03 02:49:55,319 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:50:10,238 WARN L234 SmtUtils]: Spent 6.39s on a formula simplification. DAG size of input: 443 DAG size of output: 327 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:50:17,139 WARN L234 SmtUtils]: Spent 6.77s on a formula simplification. DAG size of input: 466 DAG size of output: 347 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:50:25,420 WARN L234 SmtUtils]: Spent 7.29s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:50:33,447 WARN L234 SmtUtils]: Spent 7.79s on a formula simplification. DAG size of input: 471 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:50:39,090 WARN L234 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 468 DAG size of output: 290 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:50:50,022 WARN L234 SmtUtils]: Spent 6.07s on a formula simplification. DAG size of input: 490 DAG size of output: 322 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:51:03,059 WARN L234 SmtUtils]: Spent 7.01s on a formula simplification. DAG size of input: 512 DAG size of output: 348 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:51:28,979 WARN L234 SmtUtils]: Spent 24.39s on a formula simplification. DAG size of input: 593 DAG size of output: 465 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:51:43,271 WARN L234 SmtUtils]: Spent 8.29s on a formula simplification. DAG size of input: 563 DAG size of output: 391 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:51:52,247 WARN L234 SmtUtils]: Spent 8.29s on a formula simplification. DAG size of input: 559 DAG size of output: 387 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:52:01,389 WARN L234 SmtUtils]: Spent 8.41s on a formula simplification. DAG size of input: 565 DAG size of output: 393 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:52:10,990 WARN L234 SmtUtils]: Spent 9.02s on a formula simplification. DAG size of input: 586 DAG size of output: 410 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:52:23,173 WARN L234 SmtUtils]: Spent 8.19s on a formula simplification. DAG size of input: 477 DAG size of output: 283 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:53:08,754 WARN L234 SmtUtils]: Spent 7.50s on a formula simplification. DAG size of input: 540 DAG size of output: 392 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:53:14,971 WARN L234 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 542 DAG size of output: 340 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:53:22,465 WARN L234 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 584 DAG size of output: 363 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:53:27,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1941355739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:27,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:53:27,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [4, 4, 4] total 53 [2022-11-03 02:53:27,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567207879] [2022-11-03 02:53:27,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:27,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-03 02:53:27,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:27,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-03 02:53:27,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=2617, Unknown=0, NotChecked=0, Total=2756 [2022-11-03 02:53:27,231 INFO L87 Difference]: Start difference. First operand 231 states and 324 transitions. Second operand has 48 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 29 states have internal predecessors, (37), 15 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 02:53:41,628 WARN L234 SmtUtils]: Spent 11.18s on a formula simplification. DAG size of input: 513 DAG size of output: 406 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:54:15,198 WARN L234 SmtUtils]: Spent 12.55s on a formula simplification. DAG size of input: 517 DAG size of output: 424 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:54:40,019 WARN L234 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 482 DAG size of output: 376 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:55:04,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:55:04,726 INFO L93 Difference]: Finished difference Result 634 states and 967 transitions. [2022-11-03 02:55:04,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-03 02:55:04,727 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 29 states have internal predecessors, (37), 15 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 71 [2022-11-03 02:55:04,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:55:04,731 INFO L225 Difference]: With dead ends: 634 [2022-11-03 02:55:04,732 INFO L226 Difference]: Without dead ends: 421 [2022-11-03 02:55:04,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 276.7s TimeCoverageRelationStatistics Valid=212, Invalid=3820, Unknown=0, NotChecked=0, Total=4032 [2022-11-03 02:55:04,736 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 284 mSDsluCounter, 6279 mSDsCounter, 0 mSdLazyCounter, 6712 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 6440 SdHoareTripleChecker+Invalid, 6752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 6712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:55:04,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 6440 Invalid, 6752 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [40 Valid, 6712 Invalid, 0 Unknown, 0 Unchecked, 31.7s Time] [2022-11-03 02:55:04,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-11-03 02:55:04,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 285. [2022-11-03 02:55:04,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 183 states have (on average 1.360655737704918) internal successors, (249), 186 states have internal predecessors, (249), 72 states have call successors, (72), 31 states have call predecessors, (72), 29 states have return successors, (71), 69 states have call predecessors, (71), 71 states have call successors, (71) [2022-11-03 02:55:04,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 392 transitions. [2022-11-03 02:55:04,996 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 392 transitions. Word has length 71 [2022-11-03 02:55:04,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:55:04,997 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 392 transitions. [2022-11-03 02:55:04,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 29 states have internal predecessors, (37), 15 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 02:55:04,998 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 392 transitions. [2022-11-03 02:55:05,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-03 02:55:05,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:55:05,001 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:55:05,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 02:55:05,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:55:05,219 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:55:05,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:55:05,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1610041216, now seen corresponding path program 1 times [2022-11-03 02:55:05,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:55:05,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784207715] [2022-11-03 02:55:05,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:55:05,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:55:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:55:05,387 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:55:05,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:55:05,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784207715] [2022-11-03 02:55:05,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784207715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:55:05,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:55:05,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:55:05,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857399426] [2022-11-03 02:55:05,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:55:05,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:55:05,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:55:05,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:55:05,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:55:05,392 INFO L87 Difference]: Start difference. First operand 285 states and 392 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:55:05,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:55:05,842 INFO L93 Difference]: Finished difference Result 630 states and 911 transitions. [2022-11-03 02:55:05,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:55:05,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 76 [2022-11-03 02:55:05,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:55:05,848 INFO L225 Difference]: With dead ends: 630 [2022-11-03 02:55:05,848 INFO L226 Difference]: Without dead ends: 400 [2022-11-03 02:55:05,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:55:05,851 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 55 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:55:05,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 456 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:55:05,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-11-03 02:55:06,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 395. [2022-11-03 02:55:06,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 268 states have (on average 1.4291044776119404) internal successors, (383), 271 states have internal predecessors, (383), 97 states have call successors, (97), 31 states have call predecessors, (97), 29 states have return successors, (96), 94 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-03 02:55:06,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 576 transitions. [2022-11-03 02:55:06,125 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 576 transitions. Word has length 76 [2022-11-03 02:55:06,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:55:06,125 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 576 transitions. [2022-11-03 02:55:06,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:55:06,126 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 576 transitions. [2022-11-03 02:55:06,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-03 02:55:06,128 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:55:06,128 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:55:06,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:55:06,129 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:55:06,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:55:06,130 INFO L85 PathProgramCache]: Analyzing trace with hash 249308112, now seen corresponding path program 1 times [2022-11-03 02:55:06,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:55:06,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648528566] [2022-11-03 02:55:06,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:55:06,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:55:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:55:06,298 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:55:06,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:55:06,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648528566] [2022-11-03 02:55:06,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648528566] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:55:06,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681137334] [2022-11-03 02:55:06,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:55:06,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:55:06,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:55:06,301 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:55:06,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:55:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:55:06,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:55:06,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:55:06,704 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:55:06,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:55:06,785 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:55:06,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681137334] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:55:06,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [753182064] [2022-11-03 02:55:06,790 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2022-11-03 02:55:06,790 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:55:06,791 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:55:06,791 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:55:06,791 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:55:57,470 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 02:55:57,811 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-03 02:55:58,142 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:56:15,868 WARN L234 SmtUtils]: Spent 7.97s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:56:24,490 WARN L234 SmtUtils]: Spent 8.41s on a formula simplification. DAG size of input: 467 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:56:35,727 WARN L234 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 468 DAG size of output: 287 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:56:41,941 WARN L234 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 468 DAG size of output: 290 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:56:54,616 WARN L234 SmtUtils]: Spent 7.12s on a formula simplification. DAG size of input: 490 DAG size of output: 322 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:57:09,916 WARN L234 SmtUtils]: Spent 8.27s on a formula simplification. DAG size of input: 512 DAG size of output: 348 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:57:25,670 WARN L234 SmtUtils]: Spent 15.34s on a formula simplification. DAG size of input: 583 DAG size of output: 344 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:57:35,565 WARN L234 SmtUtils]: Spent 9.29s on a formula simplification. DAG size of input: 562 DAG size of output: 388 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:57:42,194 WARN L234 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 566 DAG size of output: 326 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:57:48,762 WARN L234 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 562 DAG size of output: 322 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:57:55,773 WARN L234 SmtUtils]: Spent 6.55s on a formula simplification. DAG size of input: 566 DAG size of output: 336 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:58:02,850 WARN L234 SmtUtils]: Spent 6.58s on a formula simplification. DAG size of input: 562 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:58:13,998 WARN L234 SmtUtils]: Spent 10.64s on a formula simplification. DAG size of input: 566 DAG size of output: 418 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:58:22,590 WARN L234 SmtUtils]: Spent 7.84s on a formula simplification. DAG size of input: 553 DAG size of output: 384 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:58:31,519 WARN L234 SmtUtils]: Spent 8.09s on a formula simplification. DAG size of input: 584 DAG size of output: 352 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:58:31,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [753182064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:58:31,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:58:31,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-03 02:58:31,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097008182] [2022-11-03 02:58:31,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:58:31,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 02:58:31,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:58:31,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 02:58:31,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2022-11-03 02:58:31,756 INFO L87 Difference]: Start difference. First operand 395 states and 576 transitions. Second operand has 25 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-03 02:58:38,798 WARN L234 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 462 DAG size of output: 368 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:59:10,832 WARN L234 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 448 DAG size of output: 398 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:59:23,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:59:23,657 INFO L93 Difference]: Finished difference Result 825 states and 1259 transitions. [2022-11-03 02:59:23,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-03 02:59:23,658 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 77 [2022-11-03 02:59:23,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:59:23,665 INFO L225 Difference]: With dead ends: 825 [2022-11-03 02:59:23,665 INFO L226 Difference]: Without dead ends: 522 [2022-11-03 02:59:23,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 203 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 193.5s TimeCoverageRelationStatistics Valid=208, Invalid=1198, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 02:59:23,668 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 250 mSDsluCounter, 3581 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 3718 SdHoareTripleChecker+Invalid, 2409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:59:23,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 3718 Invalid, 2409 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2022-11-03 02:59:23,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-11-03 02:59:24,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 439. [2022-11-03 02:59:24,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 309 states have (on average 1.4563106796116505) internal successors, (450), 313 states have internal predecessors, (450), 99 states have call successors, (99), 32 states have call predecessors, (99), 30 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) [2022-11-03 02:59:24,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 647 transitions. [2022-11-03 02:59:24,075 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 647 transitions. Word has length 77 [2022-11-03 02:59:24,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:59:24,075 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 647 transitions. [2022-11-03 02:59:24,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-03 02:59:24,076 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 647 transitions. [2022-11-03 02:59:24,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 02:59:24,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:59:24,078 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:59:24,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-03 02:59:24,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 02:59:24,289 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:59:24,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:59:24,289 INFO L85 PathProgramCache]: Analyzing trace with hash -2101268766, now seen corresponding path program 1 times [2022-11-03 02:59:24,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:59:24,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262185913] [2022-11-03 02:59:24,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:59:24,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:59:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:59:24,572 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:59:24,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:59:24,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262185913] [2022-11-03 02:59:24,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262185913] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:59:24,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512174368] [2022-11-03 02:59:24,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:59:24,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:59:24,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:59:24,575 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:59:24,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf133b09-41b6-4b1b-8ba8-1231f41ea8eb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:59:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:59:24,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:59:24,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:59:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:59:24,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:59:25,035 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:59:25,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512174368] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:59:25,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [646680203] [2022-11-03 02:59:25,040 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-03 02:59:25,040 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:59:25,048 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:59:25,049 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:59:25,049 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:01:15,166 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 03:01:15,467 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 422 for LOIs [2022-11-03 03:01:15,740 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 419 for LOIs [2022-11-03 03:01:16,026 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 439 for LOIs