./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_3168f351-49db-44e7-87d4-3f30d9cb55cb/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f589c9222141e642cc5dd52da93380b476d19c138575c9f6da35a3e335e5e2df --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 16:10:44,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 16:10:44,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 16:10:44,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 16:10:44,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 16:10:44,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 16:10:44,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 16:10:44,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 16:10:44,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 16:10:44,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 16:10:44,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 16:10:44,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 16:10:44,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 16:10:44,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 16:10:44,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 16:10:44,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 16:10:44,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 16:10:44,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 16:10:44,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 16:10:44,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 16:10:44,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 16:10:44,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 16:10:44,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 16:10:44,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 16:10:44,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 16:10:44,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 16:10:44,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 16:10:44,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 16:10:44,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 16:10:44,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 16:10:44,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 16:10:44,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 16:10:44,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 16:10:44,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 16:10:44,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 16:10:44,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 16:10:44,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 16:10:44,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 16:10:44,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 16:10:44,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 16:10:44,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 16:10:44,108 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 16:10:44,135 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 16:10:44,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 16:10:44,136 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 16:10:44,136 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 16:10:44,137 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 16:10:44,137 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 16:10:44,138 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 16:10:44,138 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 16:10:44,138 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 16:10:44,138 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 16:10:44,139 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 16:10:44,139 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 16:10:44,139 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 16:10:44,140 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 16:10:44,140 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 16:10:44,140 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 16:10:44,141 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 16:10:44,141 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 16:10:44,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 16:10:44,142 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 16:10:44,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 16:10:44,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 16:10:44,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 16:10:44,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 16:10:44,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 16:10:44,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 16:10:44,144 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 16:10:44,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 16:10:44,145 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 16:10:44,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 16:10:44,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 16:10:44,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 16:10:44,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:10:44,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 16:10:44,147 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 16:10:44,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 16:10:44,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 16:10:44,147 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 16:10:44,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 16:10:44,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 16:10:44,148 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 16:10:44,149 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_3168f351-49db-44e7-87d4-3f30d9cb55cb/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f589c9222141e642cc5dd52da93380b476d19c138575c9f6da35a3e335e5e2df [2022-11-23 16:10:44,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 16:10:44,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 16:10:44,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 16:10:44,594 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 16:10:44,594 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 16:10:44,596 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/email_spec6_product33.cil.c [2022-11-23 16:10:47,914 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 16:10:48,244 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 16:10:48,245 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/sv-benchmarks/c/product-lines/email_spec6_product33.cil.c [2022-11-23 16:10:48,269 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/bin/utaipan-Q6hlc19bkW/data/db3d30946/e8aeb53b7c5949c7b583c5e576f7075b/FLAG0581e639d [2022-11-23 16:10:48,289 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/bin/utaipan-Q6hlc19bkW/data/db3d30946/e8aeb53b7c5949c7b583c5e576f7075b [2022-11-23 16:10:48,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 16:10:48,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 16:10:48,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 16:10:48,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 16:10:48,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 16:10:48,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:10:48" (1/1) ... [2022-11-23 16:10:48,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a7fc96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:48, skipping insertion in model container [2022-11-23 16:10:48,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:10:48" (1/1) ... [2022-11-23 16:10:48,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 16:10:48,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 16:10:48,563 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/sv-benchmarks/c/product-lines/email_spec6_product33.cil.c[1934,1947] [2022-11-23 16:10:49,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:10:49,118 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 16:10:49,136 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/sv-benchmarks/c/product-lines/email_spec6_product33.cil.c[1934,1947] [2022-11-23 16:10:49,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:10:49,369 INFO L208 MainTranslator]: Completed translation [2022-11-23 16:10:49,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:49 WrapperNode [2022-11-23 16:10:49,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 16:10:49,372 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 16:10:49,372 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 16:10:49,372 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 16:10:49,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:49" (1/1) ... [2022-11-23 16:10:49,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:49" (1/1) ... [2022-11-23 16:10:49,509 INFO L138 Inliner]: procedures = 135, calls = 235, calls flagged for inlining = 66, calls inlined = 61, statements flattened = 1097 [2022-11-23 16:10:49,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 16:10:49,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 16:10:49,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 16:10:49,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 16:10:49,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:49" (1/1) ... [2022-11-23 16:10:49,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:49" (1/1) ... [2022-11-23 16:10:49,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:49" (1/1) ... [2022-11-23 16:10:49,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:49" (1/1) ... [2022-11-23 16:10:49,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:49" (1/1) ... [2022-11-23 16:10:49,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:49" (1/1) ... [2022-11-23 16:10:49,574 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:49" (1/1) ... [2022-11-23 16:10:49,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:49" (1/1) ... [2022-11-23 16:10:49,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 16:10:49,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 16:10:49,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 16:10:49,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 16:10:49,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:49" (1/1) ... [2022-11-23 16:10:49,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:10:49,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:10:49,631 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 16:10:49,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 16:10:49,700 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-23 16:10:49,700 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-23 16:10:49,701 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-23 16:10:49,701 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-23 16:10:49,701 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-23 16:10:49,701 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-23 16:10:49,702 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-23 16:10:49,702 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-23 16:10:49,702 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-23 16:10:49,702 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-23 16:10:49,702 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-23 16:10:49,703 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-23 16:10:49,703 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-23 16:10:49,703 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-23 16:10:49,703 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-23 16:10:49,705 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-23 16:10:49,705 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-23 16:10:49,705 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-23 16:10:49,705 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-23 16:10:49,706 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-23 16:10:49,706 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-23 16:10:49,707 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-23 16:10:49,707 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-23 16:10:49,708 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-23 16:10:49,708 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-23 16:10:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-23 16:10:49,710 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-23 16:10:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 16:10:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-23 16:10:49,711 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-23 16:10:49,713 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-23 16:10:49,713 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-23 16:10:49,714 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-23 16:10:49,714 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-23 16:10:49,715 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-23 16:10:49,716 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-23 16:10:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-23 16:10:49,716 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-23 16:10:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-23 16:10:49,716 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-23 16:10:49,717 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-23 16:10:49,717 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-23 16:10:49,718 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-23 16:10:49,718 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-23 16:10:49,718 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-23 16:10:49,718 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-23 16:10:49,719 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-23 16:10:49,720 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-23 16:10:49,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 16:10:49,721 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-23 16:10:49,721 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-23 16:10:49,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 16:10:49,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 16:10:50,144 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 16:10:50,172 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 16:10:51,290 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 16:10:51,928 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 16:10:51,928 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 16:10:51,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:10:51 BoogieIcfgContainer [2022-11-23 16:10:51,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 16:10:51,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 16:10:51,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 16:10:51,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 16:10:51,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:10:48" (1/3) ... [2022-11-23 16:10:51,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a8d1b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:10:51, skipping insertion in model container [2022-11-23 16:10:51,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:49" (2/3) ... [2022-11-23 16:10:51,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a8d1b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:10:51, skipping insertion in model container [2022-11-23 16:10:51,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:10:51" (3/3) ... [2022-11-23 16:10:51,951 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product33.cil.c [2022-11-23 16:10:51,978 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 16:10:51,978 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 16:10:52,064 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 16:10:52,071 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;@263dc308, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 16:10:52,071 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 16:10:52,078 INFO L276 IsEmpty]: Start isEmpty. Operand has 216 states, 125 states have (on average 1.304) internal successors, (163), 129 states have internal predecessors, (163), 65 states have call successors, (65), 24 states have call predecessors, (65), 24 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-23 16:10:52,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-23 16:10:52,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:52,095 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:10:52,095 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:10:52,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:52,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1339857497, now seen corresponding path program 1 times [2022-11-23 16:10:52,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:52,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025778819] [2022-11-23 16:10:52,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:52,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:52,626 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 16:10:52,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:52,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025778819] [2022-11-23 16:10:52,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025778819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:10:52,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:10:52,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:10:52,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045113841] [2022-11-23 16:10:52,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:10:52,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 16:10:52,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:52,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 16:10:52,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 16:10:52,671 INFO L87 Difference]: Start difference. First operand has 216 states, 125 states have (on average 1.304) internal successors, (163), 129 states have internal predecessors, (163), 65 states have call successors, (65), 24 states have call predecessors, (65), 24 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 16:10:52,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:52,927 INFO L93 Difference]: Finished difference Result 349 states and 464 transitions. [2022-11-23 16:10:52,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 16:10:52,930 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 80 [2022-11-23 16:10:52,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:52,955 INFO L225 Difference]: With dead ends: 349 [2022-11-23 16:10:52,955 INFO L226 Difference]: Without dead ends: 213 [2022-11-23 16:10:52,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 16:10:52,973 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:52,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 249 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:10:53,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-11-23 16:10:53,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2022-11-23 16:10:53,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 123 states have (on average 1.2764227642276422) internal successors, (157), 126 states have internal predecessors, (157), 65 states have call successors, (65), 24 states have call predecessors, (65), 24 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-23 16:10:53,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 286 transitions. [2022-11-23 16:10:53,118 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 286 transitions. Word has length 80 [2022-11-23 16:10:53,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:53,122 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 286 transitions. [2022-11-23 16:10:53,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 16:10:53,124 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 286 transitions. [2022-11-23 16:10:53,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-23 16:10:53,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:53,131 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:10:53,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 16:10:53,132 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:10:53,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:53,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1819689856, now seen corresponding path program 1 times [2022-11-23 16:10:53,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:53,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941561137] [2022-11-23 16:10:53,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:53,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:53,479 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 16:10:53,479 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:53,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941561137] [2022-11-23 16:10:53,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941561137] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:10:53,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:10:53,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:10:53,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251005214] [2022-11-23 16:10:53,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:10:53,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:10:53,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:53,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:10:53,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:10:53,487 INFO L87 Difference]: Start difference. First operand 213 states and 286 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 16:10:53,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:53,722 INFO L93 Difference]: Finished difference Result 345 states and 452 transitions. [2022-11-23 16:10:53,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:10:53,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 81 [2022-11-23 16:10:53,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:53,732 INFO L225 Difference]: With dead ends: 345 [2022-11-23 16:10:53,733 INFO L226 Difference]: Without dead ends: 215 [2022-11-23 16:10:53,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:10:53,742 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 0 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:53,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 491 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 16:10:53,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-11-23 16:10:53,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2022-11-23 16:10:53,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 125 states have (on average 1.272) internal successors, (159), 128 states have internal predecessors, (159), 65 states have call successors, (65), 24 states have call predecessors, (65), 24 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-23 16:10:53,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 288 transitions. [2022-11-23 16:10:53,783 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 288 transitions. Word has length 81 [2022-11-23 16:10:53,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:53,785 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 288 transitions. [2022-11-23 16:10:53,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 16:10:53,786 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 288 transitions. [2022-11-23 16:10:53,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-23 16:10:53,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:53,793 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:10:53,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 16:10:53,794 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:10:53,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:53,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1636014686, now seen corresponding path program 1 times [2022-11-23 16:10:53,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:53,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203027921] [2022-11-23 16:10:53,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:53,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:53,995 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 16:10:53,995 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:53,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203027921] [2022-11-23 16:10:53,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203027921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:10:53,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:10:53,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:10:53,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731456411] [2022-11-23 16:10:53,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:10:53,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:10:53,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:53,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:10:53,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:10:53,998 INFO L87 Difference]: Start difference. First operand 215 states and 288 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 16:10:54,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:54,172 INFO L93 Difference]: Finished difference Result 460 states and 635 transitions. [2022-11-23 16:10:54,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:10:54,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 86 [2022-11-23 16:10:54,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:54,175 INFO L225 Difference]: With dead ends: 460 [2022-11-23 16:10:54,175 INFO L226 Difference]: Without dead ends: 263 [2022-11-23 16:10:54,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:10:54,177 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 57 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:54,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 507 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:10:54,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-11-23 16:10:54,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 258. [2022-11-23 16:10:54,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 157 states have (on average 1.3503184713375795) internal successors, (212), 160 states have internal predecessors, (212), 76 states have call successors, (76), 24 states have call predecessors, (76), 24 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2022-11-23 16:10:54,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 363 transitions. [2022-11-23 16:10:54,201 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 363 transitions. Word has length 86 [2022-11-23 16:10:54,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:54,201 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 363 transitions. [2022-11-23 16:10:54,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 16:10:54,202 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 363 transitions. [2022-11-23 16:10:54,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-23 16:10:54,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:54,204 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:10:54,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 16:10:54,205 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:10:54,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:54,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1901246173, now seen corresponding path program 1 times [2022-11-23 16:10:54,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:54,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623778905] [2022-11-23 16:10:54,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:54,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:54,443 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 16:10:54,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:54,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623778905] [2022-11-23 16:10:54,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623778905] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:10:54,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270720973] [2022-11-23 16:10:54,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:54,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:10:54,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:10:54,453 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:10:54,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 16:10:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:54,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 1116 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 16:10:54,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:10:54,985 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 16:10:54,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:10:55,115 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 16:10:55,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270720973] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:10:55,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [260150031] [2022-11-23 16:10:55,149 INFO L159 IcfgInterpreter]: Started Sifa with 72 locations of interest [2022-11-23 16:10:55,149 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:10:55,154 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:10:55,159 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:10:55,159 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:11:46,164 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 448 for LOIs [2022-11-23 16:11:46,455 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 483 for LOIs [2022-11-23 16:12:26,332 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 451 for LOIs [2022-11-23 16:12:26,615 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-23 16:12:26,909 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 481 for LOIs [2022-11-23 16:13:03,964 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 439 for LOIs [2022-11-23 16:13:04,263 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 252 for LOIs [2022-11-23 16:13:04,378 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 250 for LOIs [2022-11-23 16:13:04,436 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 452 for LOIs [2022-11-23 16:13:05,160 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 254 for LOIs [2022-11-23 16:13:05,209 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:13:19,318 WARN L233 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 448 DAG size of output: 248 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:13:24,770 WARN L233 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 471 DAG size of output: 268 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:13:39,301 WARN L233 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 468 DAG size of output: 320 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:13:50,754 WARN L233 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 490 DAG size of output: 316 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:13:56,196 WARN L233 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 502 DAG size of output: 313 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:14:09,331 WARN L233 SmtUtils]: Spent 7.83s on a formula simplification. DAG size of input: 512 DAG size of output: 371 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:14:17,462 WARN L233 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 560 DAG size of output: 351 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:14:24,538 WARN L233 SmtUtils]: Spent 6.75s on a formula simplification. DAG size of input: 562 DAG size of output: 353 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:14:46,799 WARN L233 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 561 DAG size of output: 352 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:15:09,765 WARN L233 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 548 DAG size of output: 318 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:15:27,520 WARN L233 SmtUtils]: Spent 8.66s on a formula simplification. DAG size of input: 544 DAG size of output: 362 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:15:35,212 WARN L233 SmtUtils]: Spent 7.21s on a formula simplification. DAG size of input: 557 DAG size of output: 355 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:15:41,742 WARN L233 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 481 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:15:48,684 WARN L233 SmtUtils]: Spent 6.49s on a formula simplification. DAG size of input: 493 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:16:29,343 WARN L233 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 583 DAG size of output: 361 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:16:43,353 WARN L233 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 602 DAG size of output: 397 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:16:51,573 WARN L233 SmtUtils]: Spent 7.46s on a formula simplification. DAG size of input: 603 DAG size of output: 422 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:16:56,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [260150031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:16:56,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:16:56,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [4, 4, 4] total 60 [2022-11-23 16:16:56,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387057082] [2022-11-23 16:16:56,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:16:56,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-23 16:16:56,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:16:56,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-23 16:16:56,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=3380, Unknown=0, NotChecked=0, Total=3540 [2022-11-23 16:16:56,904 INFO L87 Difference]: Start difference. First operand 258 states and 363 transitions. Second operand has 55 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 33 states have internal predecessors, (43), 17 states have call successors, (19), 11 states have call predecessors, (19), 9 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2022-11-23 16:17:05,412 WARN L233 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 486 DAG size of output: 351 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:17:11,487 WARN L233 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 502 DAG size of output: 355 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:17:17,388 WARN L233 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 498 DAG size of output: 359 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:17:23,400 WARN L233 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 494 DAG size of output: 355 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:17:29,496 WARN L233 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 501 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:18:32,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:18:32,302 INFO L93 Difference]: Finished difference Result 728 states and 1111 transitions. [2022-11-23 16:18:32,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-23 16:18:32,303 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 33 states have internal predecessors, (43), 17 states have call successors, (19), 11 states have call predecessors, (19), 9 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) Word has length 87 [2022-11-23 16:18:32,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:18:32,307 INFO L225 Difference]: With dead ends: 728 [2022-11-23 16:18:32,307 INFO L226 Difference]: Without dead ends: 488 [2022-11-23 16:18:32,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1198 ImplicationChecksByTransitivity, 288.5s TimeCoverageRelationStatistics Valid=274, Invalid=5128, Unknown=0, NotChecked=0, Total=5402 [2022-11-23 16:18:32,311 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 362 mSDsluCounter, 7907 mSDsCounter, 0 mSdLazyCounter, 8757 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 8238 SdHoareTripleChecker+Invalid, 8803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 8757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.6s IncrementalHoareTripleChecker+Time [2022-11-23 16:18:32,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 8238 Invalid, 8803 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [46 Valid, 8757 Invalid, 0 Unknown, 0 Unchecked, 37.6s Time] [2022-11-23 16:18:32,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-11-23 16:18:32,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 388. [2022-11-23 16:18:32,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 261 states have (on average 1.4061302681992338) internal successors, (367), 265 states have internal predecessors, (367), 94 states have call successors, (94), 33 states have call predecessors, (94), 32 states have return successors, (94), 91 states have call predecessors, (94), 93 states have call successors, (94) [2022-11-23 16:18:32,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 555 transitions. [2022-11-23 16:18:32,560 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 555 transitions. Word has length 87 [2022-11-23 16:18:32,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:18:32,560 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 555 transitions. [2022-11-23 16:18:32,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 33 states have internal predecessors, (43), 17 states have call successors, (19), 11 states have call predecessors, (19), 9 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2022-11-23 16:18:32,561 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 555 transitions. [2022-11-23 16:18:32,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-23 16:18:32,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:18:32,563 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:18:32,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 16:18:32,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:18:32,770 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:18:32,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:18:32,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1695239912, now seen corresponding path program 1 times [2022-11-23 16:18:32,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:18:32,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102415032] [2022-11-23 16:18:32,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:18:32,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:18:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:18:32,872 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 16:18:32,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:18:32,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102415032] [2022-11-23 16:18:32,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102415032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:18:32,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:18:32,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:18:32,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429075443] [2022-11-23 16:18:32,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:18:32,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:18:32,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:18:32,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:18:32,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:18:32,875 INFO L87 Difference]: Start difference. First operand 388 states and 555 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 16:18:33,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:18:33,307 INFO L93 Difference]: Finished difference Result 849 states and 1244 transitions. [2022-11-23 16:18:33,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:18:33,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 92 [2022-11-23 16:18:33,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:18:33,311 INFO L225 Difference]: With dead ends: 849 [2022-11-23 16:18:33,311 INFO L226 Difference]: Without dead ends: 503 [2022-11-23 16:18:33,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:18:33,313 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 55 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:18:33,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 520 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:18:33,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-11-23 16:18:33,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 496. [2022-11-23 16:18:33,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 344 states have (on average 1.444767441860465) internal successors, (497), 348 states have internal predecessors, (497), 119 states have call successors, (119), 33 states have call predecessors, (119), 32 states have return successors, (119), 116 states have call predecessors, (119), 118 states have call successors, (119) [2022-11-23 16:18:33,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 735 transitions. [2022-11-23 16:18:33,565 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 735 transitions. Word has length 92 [2022-11-23 16:18:33,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:18:33,565 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 735 transitions. [2022-11-23 16:18:33,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 16:18:33,566 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 735 transitions. [2022-11-23 16:18:33,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-23 16:18:33,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:18:33,568 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:18:33,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 16:18:33,569 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:18:33,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:18:33,570 INFO L85 PathProgramCache]: Analyzing trace with hash 825435318, now seen corresponding path program 1 times [2022-11-23 16:18:33,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:18:33,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243588205] [2022-11-23 16:18:33,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:18:33,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:18:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:18:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 16:18:33,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:18:33,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243588205] [2022-11-23 16:18:33,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243588205] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:18:33,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028992890] [2022-11-23 16:18:33,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:18:33,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:18:33,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:18:33,727 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:18:33,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 16:18:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:18:34,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 16:18:34,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:18:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 16:18:34,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:18:34,243 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 16:18:34,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028992890] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:18:34,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2076349887] [2022-11-23 16:18:34,247 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2022-11-23 16:18:34,247 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:18:34,248 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:18:34,248 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:18:34,249 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:19:25,684 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-23 16:19:25,969 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-23 16:19:26,304 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:19:58,864 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 468 DAG size of output: 320 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:20:10,206 WARN L233 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 490 DAG size of output: 316 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:20:15,712 WARN L233 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 502 DAG size of output: 313 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:20:21,018 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 510 DAG size of output: 303 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:20:29,539 WARN L233 SmtUtils]: Spent 8.26s on a formula simplification. DAG size of input: 512 DAG size of output: 371 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:20:46,186 WARN L233 SmtUtils]: Spent 16.29s on a formula simplification. DAG size of input: 583 DAG size of output: 412 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:21:10,419 WARN L233 SmtUtils]: Spent 9.09s on a formula simplification. DAG size of input: 553 DAG size of output: 435 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:21:17,130 WARN L233 SmtUtils]: Spent 6.27s on a formula simplification. DAG size of input: 584 DAG size of output: 331 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:21:17,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2076349887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:21:17,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:21:17,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-23 16:21:17,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849880414] [2022-11-23 16:21:17,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:21:17,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-23 16:21:17,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:21:17,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-23 16:21:17,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-11-23 16:21:17,138 INFO L87 Difference]: Start difference. First operand 496 states and 735 transitions. Second operand has 25 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2022-11-23 16:21:31,342 WARN L233 SmtUtils]: Spent 12.44s on a formula simplification. DAG size of input: 492 DAG size of output: 412 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:21:37,442 WARN L233 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 509 DAG size of output: 370 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:21:43,500 WARN L233 SmtUtils]: Spent 5.83s on a formula simplification. DAG size of input: 510 DAG size of output: 371 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:21:49,889 WARN L233 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 508 DAG size of output: 369 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:21:56,257 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 509 DAG size of output: 370 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:22:02,701 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification. DAG size of input: 507 DAG size of output: 368 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:22:12,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:22:12,011 INFO L93 Difference]: Finished difference Result 933 states and 1426 transitions. [2022-11-23 16:22:12,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-23 16:22:12,012 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) Word has length 93 [2022-11-23 16:22:12,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:22:12,016 INFO L225 Difference]: With dead ends: 933 [2022-11-23 16:22:12,016 INFO L226 Difference]: Without dead ends: 603 [2022-11-23 16:22:12,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 154.1s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2022-11-23 16:22:12,025 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 209 mSDsluCounter, 4015 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 4275 SdHoareTripleChecker+Invalid, 2397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-23 16:22:12,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 4275 Invalid, 2397 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2022-11-23 16:22:12,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2022-11-23 16:22:12,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 552. [2022-11-23 16:22:12,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 397 states have (on average 1.4634760705289673) internal successors, (581), 402 states have internal predecessors, (581), 121 states have call successors, (121), 34 states have call predecessors, (121), 33 states have return successors, (121), 117 states have call predecessors, (121), 120 states have call successors, (121) [2022-11-23 16:22:12,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 823 transitions. [2022-11-23 16:22:12,384 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 823 transitions. Word has length 93 [2022-11-23 16:22:12,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:22:12,385 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 823 transitions. [2022-11-23 16:22:12,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2022-11-23 16:22:12,385 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 823 transitions. [2022-11-23 16:22:12,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-23 16:22:12,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:22:12,388 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:22:12,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-23 16:22:12,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 16:22:12,596 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:22:12,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:22:12,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1907174223, now seen corresponding path program 1 times [2022-11-23 16:22:12,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:22:12,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796008600] [2022-11-23 16:22:12,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:22:12,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:22:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:22:12,852 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 16:22:12,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:22:12,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796008600] [2022-11-23 16:22:12,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796008600] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:22:12,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2565701] [2022-11-23 16:22:12,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:22:12,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:22:12,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:22:12,855 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:22:12,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3168f351-49db-44e7-87d4-3f30d9cb55cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 16:22:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:22:13,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 16:22:13,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:22:13,316 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 16:22:13,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:22:13,415 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 16:22:13,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2565701] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:22:13,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [982569382] [2022-11-23 16:22:13,425 INFO L159 IcfgInterpreter]: Started Sifa with 81 locations of interest [2022-11-23 16:22:13,425 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:22:13,425 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:22:13,426 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:22:13,426 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:23:04,824 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-23 16:23:05,109 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 238 for LOIs [2022-11-23 16:23:05,180 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 247 for LOIs [2022-11-23 16:23:05,246 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 237 for LOIs [2022-11-23 16:23:05,313 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-23 16:23:05,605 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:23:36,228 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification. DAG size of input: 468 DAG size of output: 320 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:23:47,542 WARN L233 SmtUtils]: Spent 6.00s on a formula simplification. DAG size of input: 490 DAG size of output: 316 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:23:52,918 WARN L233 SmtUtils]: Spent 5.16s on a formula simplification. DAG size of input: 502 DAG size of output: 313 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:24:06,585 WARN L233 SmtUtils]: Spent 8.27s on a formula simplification. DAG size of input: 512 DAG size of output: 371 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:24:23,164 WARN L233 SmtUtils]: Spent 16.24s on a formula simplification. DAG size of input: 623 DAG size of output: 480 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)