./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS --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 459b394196a1606fd18d87736056d8c2e811f354c9c1071577c3ccd936910200 --- 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-8393723 [2022-11-19 07:28:56,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:28:56,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:28:56,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:28:56,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:28:56,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:28:56,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:28:56,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:28:56,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:28:56,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:28:56,112 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:28:56,113 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:28:56,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:28:56,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:28:56,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:28:56,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:28:56,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:28:56,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:28:56,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:28:56,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:28:56,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:28:56,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:28:56,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:28:56,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:28:56,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:28:56,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:28:56,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:28:56,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:28:56,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:28:56,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:28:56,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:28:56,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:28:56,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:28:56,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:28:56,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:28:56,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:28:56,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:28:56,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:28:56,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:28:56,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:28:56,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:28:56,146 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:28:56,185 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:28:56,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:28:56,186 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:28:56,187 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:28:56,188 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:28:56,188 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:28:56,188 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:28:56,188 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:28:56,189 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:28:56,189 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:28:56,190 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:28:56,190 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:28:56,190 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:28:56,191 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:28:56,191 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:28:56,191 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:28:56,191 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:28:56,192 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:28:56,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:28:56,193 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:28:56,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:28:56,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:28:56,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:28:56,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:28:56,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:28:56,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:28:56,194 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:28:56,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:28:56,195 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:28:56,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:28:56,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:28:56,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:28:56,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:28:56,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:28:56,196 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:28:56,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:28:56,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:28:56,197 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:28:56,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:28:56,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:28:56,198 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:28:56,198 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_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 459b394196a1606fd18d87736056d8c2e811f354c9c1071577c3ccd936910200 [2022-11-19 07:28:56,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:28:56,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:28:56,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:28:56,530 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:28:56,530 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:28:56,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/email_spec8_product28.cil.c [2022-11-19 07:28:56,599 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS/data/7dc4bf1d5/2d6eea57f364454ca8f0ccb4ff1dcac3/FLAG102fc0186 [2022-11-19 07:28:57,287 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:28:57,288 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85a15a2-c87f-4743-ad99-e22ee198ea5d/sv-benchmarks/c/product-lines/email_spec8_product28.cil.c [2022-11-19 07:28:57,320 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS/data/7dc4bf1d5/2d6eea57f364454ca8f0ccb4ff1dcac3/FLAG102fc0186 [2022-11-19 07:28:57,508 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS/data/7dc4bf1d5/2d6eea57f364454ca8f0ccb4ff1dcac3 [2022-11-19 07:28:57,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:28:57,514 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:28:57,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:28:57,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:28:57,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:28:57,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:28:57" (1/1) ... [2022-11-19 07:28:57,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e8d75ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:57, skipping insertion in model container [2022-11-19 07:28:57,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:28:57" (1/1) ... [2022-11-19 07:28:57,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:28:57,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:28:58,194 WARN L234 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_a85a15a2-c87f-4743-ad99-e22ee198ea5d/sv-benchmarks/c/product-lines/email_spec8_product28.cil.c[29342,29355] [2022-11-19 07:28:58,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:28:58,365 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:28:58,414 WARN L234 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_a85a15a2-c87f-4743-ad99-e22ee198ea5d/sv-benchmarks/c/product-lines/email_spec8_product28.cil.c[29342,29355] [2022-11-19 07:28:58,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:28:58,483 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:28:58,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:58 WrapperNode [2022-11-19 07:28:58,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:28:58,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:28:58,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:28:58,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:28:58,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:58" (1/1) ... [2022-11-19 07:28:58,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:58" (1/1) ... [2022-11-19 07:28:58,559 INFO L138 Inliner]: procedures = 129, calls = 213, calls flagged for inlining = 56, calls inlined = 46, statements flattened = 868 [2022-11-19 07:28:58,559 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:28:58,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:28:58,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:28:58,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:28:58,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:58" (1/1) ... [2022-11-19 07:28:58,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:58" (1/1) ... [2022-11-19 07:28:58,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:58" (1/1) ... [2022-11-19 07:28:58,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:58" (1/1) ... [2022-11-19 07:28:58,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:58" (1/1) ... [2022-11-19 07:28:58,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:58" (1/1) ... [2022-11-19 07:28:58,639 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:58" (1/1) ... [2022-11-19 07:28:58,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:58" (1/1) ... [2022-11-19 07:28:58,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:28:58,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:28:58,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:28:58,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:28:58,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:58" (1/1) ... [2022-11-19 07:28:58,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:28:58,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:28:58,728 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:28:58,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:28:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-19 07:28:58,777 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-19 07:28:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-19 07:28:58,777 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-19 07:28:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-19 07:28:58,778 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-19 07:28:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-19 07:28:58,778 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-19 07:28:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-19 07:28:58,779 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-19 07:28:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-19 07:28:58,779 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-19 07:28:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-19 07:28:58,779 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-19 07:28:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-19 07:28:58,780 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-19 07:28:58,781 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-19 07:28:58,781 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-19 07:28:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-19 07:28:58,782 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-19 07:28:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-19 07:28:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-19 07:28:58,782 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-19 07:28:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-19 07:28:58,783 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-19 07:28:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:28:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-19 07:28:58,783 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-19 07:28:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-19 07:28:58,784 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-19 07:28:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-19 07:28:58,784 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-19 07:28:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-19 07:28:58,785 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-19 07:28:58,785 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-19 07:28:58,785 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-19 07:28:58,786 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-19 07:28:58,786 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-19 07:28:58,786 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-19 07:28:58,787 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-19 07:28:58,787 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-19 07:28:58,787 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-19 07:28:58,788 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-19 07:28:58,788 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-19 07:28:58,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:28:58,789 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-19 07:28:58,790 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-19 07:28:58,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:28:58,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:28:59,064 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:28:59,082 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:29:00,000 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:29:00,433 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:29:00,433 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:29:00,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:29:00 BoogieIcfgContainer [2022-11-19 07:29:00,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:29:00,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:29:00,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:29:00,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:29:00,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:28:57" (1/3) ... [2022-11-19 07:29:00,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f9b20ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:29:00, skipping insertion in model container [2022-11-19 07:29:00,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:58" (2/3) ... [2022-11-19 07:29:00,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f9b20ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:29:00, skipping insertion in model container [2022-11-19 07:29:00,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:29:00" (3/3) ... [2022-11-19 07:29:00,444 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec8_product28.cil.c [2022-11-19 07:29:00,465 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:29:00,465 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:29:00,551 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:29:00,559 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;@21bf4042, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:29:00,560 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:29:00,564 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 106 states have (on average 1.3396226415094339) internal successors, (142), 110 states have internal predecessors, (142), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-19 07:29:00,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-19 07:29:00,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:00,582 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] [2022-11-19 07:29:00,583 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:00,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:00,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1414473219, now seen corresponding path program 1 times [2022-11-19 07:29:00,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:00,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032276224] [2022-11-19 07:29:00,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:00,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:01,077 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:29:01,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:01,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032276224] [2022-11-19 07:29:01,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032276224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:01,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:01,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:29:01,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900047131] [2022-11-19 07:29:01,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:01,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:29:01,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:29:01,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:29:01,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:29:01,116 INFO L87 Difference]: Start difference. First operand has 180 states, 106 states have (on average 1.3396226415094339) internal successors, (142), 110 states have internal predecessors, (142), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 07:29:01,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:01,240 INFO L93 Difference]: Finished difference Result 277 states and 362 transitions. [2022-11-19 07:29:01,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:29:01,245 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2022-11-19 07:29:01,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:01,257 INFO L225 Difference]: With dead ends: 277 [2022-11-19 07:29:01,257 INFO L226 Difference]: Without dead ends: 177 [2022-11-19 07:29:01,261 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 [2022-11-19 07:29:01,265 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:01,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 208 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:29:01,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-19 07:29:01,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-11-19 07:29:01,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 104 states have (on average 1.3076923076923077) internal successors, (136), 107 states have internal predecessors, (136), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-19 07:29:01,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 235 transitions. [2022-11-19 07:29:01,326 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 235 transitions. Word has length 61 [2022-11-19 07:29:01,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:01,328 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 235 transitions. [2022-11-19 07:29:01,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 07:29:01,328 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 235 transitions. [2022-11-19 07:29:01,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-19 07:29:01,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:01,332 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] [2022-11-19 07:29:01,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:29:01,332 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:01,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:01,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1608644703, now seen corresponding path program 1 times [2022-11-19 07:29:01,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:01,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815634097] [2022-11-19 07:29:01,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:01,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:01,708 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:29:01,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:01,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815634097] [2022-11-19 07:29:01,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815634097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:01,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:01,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:29:01,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80011499] [2022-11-19 07:29:01,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:01,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:29:01,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:29:01,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:29:01,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:01,715 INFO L87 Difference]: Start difference. First operand 177 states and 235 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 07:29:01,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:01,875 INFO L93 Difference]: Finished difference Result 273 states and 350 transitions. [2022-11-19 07:29:01,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:29:01,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 62 [2022-11-19 07:29:01,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:01,879 INFO L225 Difference]: With dead ends: 273 [2022-11-19 07:29:01,879 INFO L226 Difference]: Without dead ends: 179 [2022-11-19 07:29:01,880 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 [2022-11-19 07:29:01,882 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 0 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:01,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 409 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:29:01,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-19 07:29:01,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-11-19 07:29:01,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 106 states have (on average 1.3018867924528301) internal successors, (138), 109 states have internal predecessors, (138), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-19 07:29:01,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 237 transitions. [2022-11-19 07:29:01,928 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 237 transitions. Word has length 62 [2022-11-19 07:29:01,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:01,929 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 237 transitions. [2022-11-19 07:29:01,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 07:29:01,931 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 237 transitions. [2022-11-19 07:29:01,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-19 07:29:01,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:01,938 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] [2022-11-19 07:29:01,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:29:01,938 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:01,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:01,939 INFO L85 PathProgramCache]: Analyzing trace with hash 358854191, now seen corresponding path program 1 times [2022-11-19 07:29:01,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:01,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098684800] [2022-11-19 07:29:01,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:01,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:02,130 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:29:02,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:02,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098684800] [2022-11-19 07:29:02,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098684800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:02,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:02,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:29:02,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684399033] [2022-11-19 07:29:02,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:02,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:29:02,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:29:02,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:29:02,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:02,137 INFO L87 Difference]: Start difference. First operand 179 states and 237 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 07:29:02,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:02,279 INFO L93 Difference]: Finished difference Result 388 states and 533 transitions. [2022-11-19 07:29:02,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:29:02,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 67 [2022-11-19 07:29:02,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:02,282 INFO L225 Difference]: With dead ends: 388 [2022-11-19 07:29:02,283 INFO L226 Difference]: Without dead ends: 227 [2022-11-19 07:29:02,284 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 [2022-11-19 07:29:02,286 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 57 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:02,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 422 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:29:02,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-19 07:29:02,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 222. [2022-11-19 07:29:02,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 138 states have (on average 1.3840579710144927) internal successors, (191), 141 states have internal predecessors, (191), 61 states have call successors, (61), 22 states have call predecessors, (61), 22 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-19 07:29:02,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 312 transitions. [2022-11-19 07:29:02,307 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 312 transitions. Word has length 67 [2022-11-19 07:29:02,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:02,308 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 312 transitions. [2022-11-19 07:29:02,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 07:29:02,308 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 312 transitions. [2022-11-19 07:29:02,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-19 07:29:02,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:02,311 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] [2022-11-19 07:29:02,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:29:02,311 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:02,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:02,312 INFO L85 PathProgramCache]: Analyzing trace with hash 402626366, now seen corresponding path program 1 times [2022-11-19 07:29:02,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:02,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742748608] [2022-11-19 07:29:02,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:02,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:02,496 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:29:02,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:02,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742748608] [2022-11-19 07:29:02,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742748608] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:29:02,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421647582] [2022-11-19 07:29:02,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:02,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:29:02,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:29:02,501 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:29:02,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:29:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:02,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:29:02,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:02,932 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:29:02,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:29:03,005 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:29:03,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421647582] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:29:03,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2084339461] [2022-11-19 07:29:03,031 INFO L159 IcfgInterpreter]: Started Sifa with 57 locations of interest [2022-11-19 07:29:03,031 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:29:03,036 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:29:03,042 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:29:03,045 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:29:38,718 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-19 07:29:39,108 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-11-19 07:29:39,421 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 480 for LOIs [2022-11-19 07:29:51,623 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 475 for LOIs [2022-11-19 07:30:13,943 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 444 for LOIs [2022-11-19 07:30:14,224 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 248 for LOIs [2022-11-19 07:30:14,291 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 253 for LOIs [2022-11-19 07:30:14,338 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 459 for LOIs [2022-11-19 07:30:15,036 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:30:29,227 WARN L233 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 443 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:30:35,602 WARN L233 SmtUtils]: Spent 6.27s on a formula simplification. DAG size of input: 466 DAG size of output: 347 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:30:42,697 WARN L233 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:30:49,262 WARN L233 SmtUtils]: Spent 6.42s on a formula simplification. DAG size of input: 471 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:31:06,497 WARN L233 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 496 DAG size of output: 320 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:31:13,679 WARN L233 SmtUtils]: Spent 6.95s on a formula simplification. DAG size of input: 508 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:31:20,761 WARN L233 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 518 DAG size of output: 299 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:31:26,200 WARN L233 SmtUtils]: Spent 5.16s on a formula simplification. DAG size of input: 569 DAG size of output: 320 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:31:37,546 WARN L233 SmtUtils]: Spent 5.75s on a formula simplification. DAG size of input: 573 DAG size of output: 334 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:31:43,255 WARN L233 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 571 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:31:49,205 WARN L233 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 575 DAG size of output: 336 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:31:54,849 WARN L233 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 570 DAG size of output: 321 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:32:22,188 WARN L233 SmtUtils]: Spent 7.76s on a formula simplification. DAG size of input: 538 DAG size of output: 343 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:32:29,058 WARN L233 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 567 DAG size of output: 307 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:32:45,328 WARN L233 SmtUtils]: Spent 6.14s on a formula simplification. DAG size of input: 444 DAG size of output: 320 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:32:52,484 WARN L233 SmtUtils]: Spent 6.69s on a formula simplification. DAG size of input: 470 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:33:16,047 WARN L233 SmtUtils]: Spent 7.05s on a formula simplification. DAG size of input: 535 DAG size of output: 340 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:33:26,504 WARN L233 SmtUtils]: Spent 9.73s on a formula simplification. DAG size of input: 537 DAG size of output: 412 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:33:37,457 WARN L233 SmtUtils]: Spent 9.70s on a formula simplification. DAG size of input: 579 DAG size of output: 434 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:33:42,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2084339461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:42,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:33:42,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [4, 4, 4] total 50 [2022-11-19 07:33:42,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654517408] [2022-11-19 07:33:42,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:42,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-19 07:33:42,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:33:42,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-19 07:33:42,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=2311, Unknown=0, NotChecked=0, Total=2450 [2022-11-19 07:33:42,605 INFO L87 Difference]: Start difference. First operand 222 states and 312 transitions. Second operand has 45 states, 30 states have (on average 1.2) internal successors, (36), 28 states have internal predecessors, (36), 14 states have call successors, (14), 9 states have call predecessors, (14), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-19 07:34:19,183 WARN L233 SmtUtils]: Spent 6.29s on a formula simplification. DAG size of input: 533 DAG size of output: 369 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:34:27,542 WARN L233 SmtUtils]: Spent 7.81s on a formula simplification. DAG size of input: 554 DAG size of output: 390 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:34:42,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:34:42,307 INFO L93 Difference]: Finished difference Result 555 states and 829 transitions. [2022-11-19 07:34:42,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-19 07:34:42,308 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 30 states have (on average 1.2) internal successors, (36), 28 states have internal predecessors, (36), 14 states have call successors, (14), 9 states have call predecessors, (14), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 68 [2022-11-19 07:34:42,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:34:42,311 INFO L225 Difference]: With dead ends: 555 [2022-11-19 07:34:42,311 INFO L226 Difference]: Without dead ends: 351 [2022-11-19 07:34:42,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 236.6s TimeCoverageRelationStatistics Valid=176, Invalid=2904, Unknown=0, NotChecked=0, Total=3080 [2022-11-19 07:34:42,315 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 232 mSDsluCounter, 5304 mSDsCounter, 0 mSdLazyCounter, 5666 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 5544 SdHoareTripleChecker+Invalid, 5687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 5666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:34:42,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 5544 Invalid, 5687 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [21 Valid, 5666 Invalid, 0 Unknown, 0 Unchecked, 29.9s Time] [2022-11-19 07:34:42,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-11-19 07:34:42,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 297. [2022-11-19 07:34:42,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 201 states have (on average 1.4328358208955223) internal successors, (288), 204 states have internal predecessors, (288), 68 states have call successors, (68), 29 states have call predecessors, (68), 27 states have return successors, (67), 65 states have call predecessors, (67), 67 states have call successors, (67) [2022-11-19 07:34:42,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 423 transitions. [2022-11-19 07:34:42,571 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 423 transitions. Word has length 68 [2022-11-19 07:34:42,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:34:42,572 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 423 transitions. [2022-11-19 07:34:42,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 30 states have (on average 1.2) internal successors, (36), 28 states have internal predecessors, (36), 14 states have call successors, (14), 9 states have call predecessors, (14), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-19 07:34:42,573 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 423 transitions. [2022-11-19 07:34:42,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-19 07:34:42,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:34:42,578 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] [2022-11-19 07:34:42,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:34:42,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:34:42,787 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:34:42,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:34:42,788 INFO L85 PathProgramCache]: Analyzing trace with hash -29126272, now seen corresponding path program 1 times [2022-11-19 07:34:42,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:34:42,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226608779] [2022-11-19 07:34:42,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:34:42,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:34:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:34:42,985 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:34:42,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:34:42,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226608779] [2022-11-19 07:34:42,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226608779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:34:42,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:34:42,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:34:42,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600526996] [2022-11-19 07:34:42,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:34:42,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:34:42,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:34:42,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:34:42,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:34:42,990 INFO L87 Difference]: Start difference. First operand 297 states and 423 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2022-11-19 07:34:43,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:34:43,410 INFO L93 Difference]: Finished difference Result 708 states and 1052 transitions. [2022-11-19 07:34:43,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:34:43,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 73 [2022-11-19 07:34:43,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:34:43,421 INFO L225 Difference]: With dead ends: 708 [2022-11-19 07:34:43,421 INFO L226 Difference]: Without dead ends: 437 [2022-11-19 07:34:43,423 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 [2022-11-19 07:34:43,428 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 55 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:34:43,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 434 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:34:43,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-11-19 07:34:43,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 430. [2022-11-19 07:34:43,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 309 states have (on average 1.5048543689320388) internal successors, (465), 312 states have internal predecessors, (465), 93 states have call successors, (93), 29 states have call predecessors, (93), 27 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2022-11-19 07:34:43,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 650 transitions. [2022-11-19 07:34:43,710 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 650 transitions. Word has length 73 [2022-11-19 07:34:43,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:34:43,711 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 650 transitions. [2022-11-19 07:34:43,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2022-11-19 07:34:43,712 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 650 transitions. [2022-11-19 07:34:43,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-19 07:34:43,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:34:43,716 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] [2022-11-19 07:34:43,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:34:43,716 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:34:43,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:34:43,717 INFO L85 PathProgramCache]: Analyzing trace with hash -2127586926, now seen corresponding path program 1 times [2022-11-19 07:34:43,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:34:43,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266879018] [2022-11-19 07:34:43,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:34:43,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:34:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:34:43,891 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:34:43,891 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:34:43,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266879018] [2022-11-19 07:34:43,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266879018] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:34:43,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870342208] [2022-11-19 07:34:43,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:34:43,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:34:43,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:34:43,894 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:34:43,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:34:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:34:44,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:34:44,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:34:44,298 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:34:44,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:34:44,377 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:34:44,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870342208] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:34:44,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1936594103] [2022-11-19 07:34:44,382 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-11-19 07:34:44,382 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:34:44,383 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:34:44,383 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:34:44,383 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:35:42,122 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-19 07:35:42,461 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-19 07:35:42,912 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:35:59,372 WARN L233 SmtUtils]: Spent 6.97s on a formula simplification. DAG size of input: 443 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:36:07,314 WARN L233 SmtUtils]: Spent 7.80s on a formula simplification. DAG size of input: 466 DAG size of output: 347 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:36:19,009 WARN L233 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 468 DAG size of output: 287 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:36:25,268 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification. DAG size of input: 474 DAG size of output: 285 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:36:30,606 WARN L233 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 486 DAG size of output: 289 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:36:37,988 WARN L233 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 496 DAG size of output: 320 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:36:45,020 WARN L233 SmtUtils]: Spent 6.82s on a formula simplification. DAG size of input: 508 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:36:51,885 WARN L233 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 518 DAG size of output: 299 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:37:07,152 WARN L233 SmtUtils]: Spent 14.94s on a formula simplification. DAG size of input: 587 DAG size of output: 379 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:37:39,593 WARN L233 SmtUtils]: Spent 7.86s on a formula simplification. DAG size of input: 588 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:37:39,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1936594103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:37:39,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:37:39,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-19 07:37:39,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918731771] [2022-11-19 07:37:39,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:37:39,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-19 07:37:39,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:37:39,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-19 07:37:39,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-11-19 07:37:39,812 INFO L87 Difference]: Start difference. First operand 430 states and 650 transitions. Second operand has 25 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-19 07:37:48,567 WARN L233 SmtUtils]: Spent 6.88s on a formula simplification. DAG size of input: 436 DAG size of output: 384 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:38:14,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:38:14,473 INFO L93 Difference]: Finished difference Result 872 states and 1365 transitions. [2022-11-19 07:38:14,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-19 07:38:14,474 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 74 [2022-11-19 07:38:14,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:38:14,478 INFO L225 Difference]: With dead ends: 872 [2022-11-19 07:38:14,478 INFO L226 Difference]: Without dead ends: 578 [2022-11-19 07:38:14,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 194 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 140.4s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2022-11-19 07:38:14,481 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 188 mSDsluCounter, 3236 mSDsCounter, 0 mSdLazyCounter, 2269 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 3451 SdHoareTripleChecker+Invalid, 2295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:38:14,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 3451 Invalid, 2295 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 2269 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2022-11-19 07:38:14,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2022-11-19 07:38:14,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 507. [2022-11-19 07:38:14,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 382 states have (on average 1.5340314136125655) internal successors, (586), 387 states have internal predecessors, (586), 96 states have call successors, (96), 30 states have call predecessors, (96), 28 states have return successors, (95), 91 states have call predecessors, (95), 95 states have call successors, (95) [2022-11-19 07:38:14,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 777 transitions. [2022-11-19 07:38:14,769 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 777 transitions. Word has length 74 [2022-11-19 07:38:14,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:38:14,770 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 777 transitions. [2022-11-19 07:38:14,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-19 07:38:14,771 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 777 transitions. [2022-11-19 07:38:14,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-19 07:38:14,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:38:14,774 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] [2022-11-19 07:38:14,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:38:14,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-19 07:38:14,982 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:38:14,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:38:14,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1684005548, now seen corresponding path program 1 times [2022-11-19 07:38:14,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:38:14,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290714787] [2022-11-19 07:38:14,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:38:14,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:38:15,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:38:15,203 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:38:15,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:38:15,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290714787] [2022-11-19 07:38:15,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290714787] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:38:15,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603134314] [2022-11-19 07:38:15,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:38:15,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:38:15,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:38:15,206 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:38:15,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85a15a2-c87f-4743-ad99-e22ee198ea5d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:38:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:38:15,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:38:15,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:38:15,627 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:38:15,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:38:15,723 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:38:15,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603134314] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:38:15,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [241522478] [2022-11-19 07:38:15,728 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2022-11-19 07:38:15,728 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:38:15,728 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:38:15,729 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:38:15,729 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:40:08,866 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-19 07:40:09,243 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 422 for LOIs [2022-11-19 07:40:09,590 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 419 for LOIs [2022-11-19 07:40:09,940 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 236 for LOIs [2022-11-19 07:40:10,694 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 213 for LOIs [2022-11-19 07:40:10,768 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-11-19 07:40:11,122 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 231 for LOIs [2022-11-19 07:40:27,917 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 202 for LOIs [2022-11-19 07:40:27,954 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 222 for LOIs [2022-11-19 07:40:28,018 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 227 for LOIs [2022-11-19 07:40:28,055 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 424 for LOIs [2022-11-19 07:40:29,761 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:40:34,823 WARN L233 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 486 DAG size of output: 483 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:40:39,921 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 496 DAG size of output: 491 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:40:47,991 WARN L233 SmtUtils]: Spent 7.97s on a formula simplification. DAG size of input: 443 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:40:55,956 WARN L233 SmtUtils]: Spent 7.84s on a formula simplification. DAG size of input: 466 DAG size of output: 347 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:41:04,100 WARN L233 SmtUtils]: Spent 7.18s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:41:11,776 WARN L233 SmtUtils]: Spent 7.53s on a formula simplification. DAG size of input: 471 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:41:17,702 WARN L233 SmtUtils]: Spent 5.77s on a formula simplification. DAG size of input: 474 DAG size of output: 285 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:41:23,067 WARN L233 SmtUtils]: Spent 5.17s on a formula simplification. DAG size of input: 486 DAG size of output: 289 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:41:31,211 WARN L233 SmtUtils]: Spent 6.89s on a formula simplification. DAG size of input: 496 DAG size of output: 320 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:41:39,584 WARN L233 SmtUtils]: Spent 8.11s on a formula simplification. DAG size of input: 508 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:41:47,954 WARN L233 SmtUtils]: Spent 6.74s on a formula simplification. DAG size of input: 518 DAG size of output: 299 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:42:08,109 WARN L233 SmtUtils]: Spent 11.30s on a formula simplification. DAG size of input: 536 DAG size of output: 316 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:42:15,265 WARN L233 SmtUtils]: Spent 6.66s on a formula simplification. DAG size of input: 529 DAG size of output: 320 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)