./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product16.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product16.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9 --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 5ce5fd5bda0c8594f52541a2ff1031f1544bc9165bf7645718c7801e066263fc --- 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-6b4ec56 [2022-11-20 19:00:11,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 19:00:11,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 19:00:11,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 19:00:11,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 19:00:11,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 19:00:11,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 19:00:11,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 19:00:11,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 19:00:11,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 19:00:11,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 19:00:11,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 19:00:11,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 19:00:11,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 19:00:11,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 19:00:11,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 19:00:11,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 19:00:11,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 19:00:11,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 19:00:11,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 19:00:11,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 19:00:11,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 19:00:11,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 19:00:11,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 19:00:11,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 19:00:11,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 19:00:11,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 19:00:11,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 19:00:11,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 19:00:11,771 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 19:00:11,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 19:00:11,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 19:00:11,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 19:00:11,777 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 19:00:11,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 19:00:11,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 19:00:11,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 19:00:11,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 19:00:11,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 19:00:11,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 19:00:11,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 19:00:11,787 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 19:00:11,835 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 19:00:11,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 19:00:11,837 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 19:00:11,837 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 19:00:11,838 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 19:00:11,839 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 19:00:11,839 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 19:00:11,839 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 19:00:11,839 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 19:00:11,840 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 19:00:11,841 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 19:00:11,842 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 19:00:11,842 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 19:00:11,842 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 19:00:11,843 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 19:00:11,843 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 19:00:11,843 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 19:00:11,844 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 19:00:11,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 19:00:11,845 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 19:00:11,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 19:00:11,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 19:00:11,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 19:00:11,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 19:00:11,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 19:00:11,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 19:00:11,847 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 19:00:11,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 19:00:11,848 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 19:00:11,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 19:00:11,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 19:00:11,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 19:00:11,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:00:11,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 19:00:11,850 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 19:00:11,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 19:00:11,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 19:00:11,851 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 19:00:11,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 19:00:11,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 19:00:11,852 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 19:00:11,852 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_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ce5fd5bda0c8594f52541a2ff1031f1544bc9165bf7645718c7801e066263fc [2022-11-20 19:00:12,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 19:00:12,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 19:00:12,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 19:00:12,230 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 19:00:12,231 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 19:00:12,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/product-lines/email_spec0_product16.cil.c [2022-11-20 19:00:15,847 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 19:00:16,248 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 19:00:16,248 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/sv-benchmarks/c/product-lines/email_spec0_product16.cil.c [2022-11-20 19:00:16,272 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/data/5abab3ee2/15e58134718643c68a7c3f30a8d64fa3/FLAGfd3662019 [2022-11-20 19:00:16,289 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/data/5abab3ee2/15e58134718643c68a7c3f30a8d64fa3 [2022-11-20 19:00:16,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 19:00:16,293 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 19:00:16,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 19:00:16,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 19:00:16,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 19:00:16,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:00:16" (1/1) ... [2022-11-20 19:00:16,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283237c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:16, skipping insertion in model container [2022-11-20 19:00:16,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:00:16" (1/1) ... [2022-11-20 19:00:16,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 19:00:16,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 19:00:16,691 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_10d11cbd-df79-4758-ba82-481ba0e0c9c6/sv-benchmarks/c/product-lines/email_spec0_product16.cil.c[7449,7462] [2022-11-20 19:00:17,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:00:17,086 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 19:00:17,122 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_10d11cbd-df79-4758-ba82-481ba0e0c9c6/sv-benchmarks/c/product-lines/email_spec0_product16.cil.c[7449,7462] [2022-11-20 19:00:17,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:00:17,284 INFO L208 MainTranslator]: Completed translation [2022-11-20 19:00:17,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:17 WrapperNode [2022-11-20 19:00:17,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 19:00:17,286 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 19:00:17,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 19:00:17,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 19:00:17,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:17" (1/1) ... [2022-11-20 19:00:17,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:17" (1/1) ... [2022-11-20 19:00:17,384 INFO L138 Inliner]: procedures = 125, calls = 195, calls flagged for inlining = 55, calls inlined = 50, statements flattened = 971 [2022-11-20 19:00:17,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 19:00:17,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 19:00:17,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 19:00:17,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 19:00:17,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:17" (1/1) ... [2022-11-20 19:00:17,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:17" (1/1) ... [2022-11-20 19:00:17,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:17" (1/1) ... [2022-11-20 19:00:17,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:17" (1/1) ... [2022-11-20 19:00:17,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:17" (1/1) ... [2022-11-20 19:00:17,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:17" (1/1) ... [2022-11-20 19:00:17,473 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:17" (1/1) ... [2022-11-20 19:00:17,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:17" (1/1) ... [2022-11-20 19:00:17,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 19:00:17,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 19:00:17,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 19:00:17,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 19:00:17,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:17" (1/1) ... [2022-11-20 19:00:17,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:00:17,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:00:17,540 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 19:00:17,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 19:00:17,596 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-20 19:00:17,597 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-20 19:00:17,597 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-20 19:00:17,597 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-20 19:00:17,597 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-20 19:00:17,597 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-20 19:00:17,598 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-20 19:00:17,598 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-20 19:00:17,598 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-20 19:00:17,598 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-20 19:00:17,598 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-20 19:00:17,599 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-20 19:00:17,599 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-20 19:00:17,599 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-20 19:00:17,599 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-20 19:00:17,599 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-20 19:00:17,600 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-20 19:00:17,600 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-20 19:00:17,600 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-20 19:00:17,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 19:00:17,601 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-20 19:00:17,601 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-20 19:00:17,602 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-20 19:00:17,602 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-20 19:00:17,603 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-20 19:00:17,604 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-20 19:00:17,604 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-20 19:00:17,604 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-20 19:00:17,604 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-20 19:00:17,605 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-20 19:00:17,607 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-20 19:00:17,607 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-20 19:00:17,607 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-20 19:00:17,607 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-20 19:00:17,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 19:00:17,608 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-20 19:00:17,608 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-20 19:00:17,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 19:00:17,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 19:00:17,933 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 19:00:17,936 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 19:00:18,807 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 19:00:19,337 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 19:00:19,337 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 19:00:19,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:00:19 BoogieIcfgContainer [2022-11-20 19:00:19,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 19:00:19,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 19:00:19,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 19:00:19,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 19:00:19,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:00:16" (1/3) ... [2022-11-20 19:00:19,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5956e16b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:00:19, skipping insertion in model container [2022-11-20 19:00:19,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:17" (2/3) ... [2022-11-20 19:00:19,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5956e16b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:00:19, skipping insertion in model container [2022-11-20 19:00:19,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:00:19" (3/3) ... [2022-11-20 19:00:19,353 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product16.cil.c [2022-11-20 19:00:19,373 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 19:00:19,374 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 19:00:19,448 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 19:00:19,457 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;@728e56ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 19:00:19,458 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 19:00:19,464 INFO L276 IsEmpty]: Start isEmpty. Operand has 156 states, 92 states have (on average 1.358695652173913) internal successors, (125), 96 states have internal predecessors, (125), 45 states have call successors, (45), 17 states have call predecessors, (45), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-20 19:00:19,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-20 19:00:19,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:00:19,483 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] [2022-11-20 19:00:19,484 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:00:19,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:00:19,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1766309514, now seen corresponding path program 1 times [2022-11-20 19:00:19,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:00:19,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459955651] [2022-11-20 19:00:19,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:00:19,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:00:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:00:19,999 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 19:00:20,000 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:00:20,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459955651] [2022-11-20 19:00:20,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459955651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:00:20,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:00:20,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 19:00:20,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431242892] [2022-11-20 19:00:20,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:00:20,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 19:00:20,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:00:20,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 19:00:20,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 19:00:20,052 INFO L87 Difference]: Start difference. First operand has 156 states, 92 states have (on average 1.358695652173913) internal successors, (125), 96 states have internal predecessors, (125), 45 states have call successors, (45), 17 states have call predecessors, (45), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 19:00:20,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:00:20,193 INFO L93 Difference]: Finished difference Result 229 states and 308 transitions. [2022-11-20 19:00:20,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 19:00:20,196 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 70 [2022-11-20 19:00:20,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:00:20,224 INFO L225 Difference]: With dead ends: 229 [2022-11-20 19:00:20,224 INFO L226 Difference]: Without dead ends: 153 [2022-11-20 19:00:20,231 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 [2022-11-20 19:00:20,236 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:00:20,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 181 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:00:20,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-20 19:00:20,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2022-11-20 19:00:20,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 90 states have (on average 1.3222222222222222) internal successors, (119), 93 states have internal predecessors, (119), 45 states have call successors, (45), 17 states have call predecessors, (45), 17 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-11-20 19:00:20,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 208 transitions. [2022-11-20 19:00:20,335 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 208 transitions. Word has length 70 [2022-11-20 19:00:20,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:00:20,338 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 208 transitions. [2022-11-20 19:00:20,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 19:00:20,339 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 208 transitions. [2022-11-20 19:00:20,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-20 19:00:20,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:00:20,351 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] [2022-11-20 19:00:20,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 19:00:20,352 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:00:20,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:00:20,353 INFO L85 PathProgramCache]: Analyzing trace with hash 594547950, now seen corresponding path program 1 times [2022-11-20 19:00:20,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:00:20,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966003474] [2022-11-20 19:00:20,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:00:20,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:00:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:00:20,726 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 19:00:20,726 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:00:20,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966003474] [2022-11-20 19:00:20,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966003474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:00:20,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:00:20,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:00:20,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537624647] [2022-11-20 19:00:20,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:00:20,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:00:20,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:00:20,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:00:20,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:00:20,730 INFO L87 Difference]: Start difference. First operand 153 states and 208 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 19:00:20,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:00:20,903 INFO L93 Difference]: Finished difference Result 225 states and 296 transitions. [2022-11-20 19:00:20,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:00:20,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 71 [2022-11-20 19:00:20,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:00:20,910 INFO L225 Difference]: With dead ends: 225 [2022-11-20 19:00:20,911 INFO L226 Difference]: Without dead ends: 155 [2022-11-20 19:00:20,919 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 [2022-11-20 19:00:20,920 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 0 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:00:20,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:00:20,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-20 19:00:20,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2022-11-20 19:00:20,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 92 states have (on average 1.315217391304348) internal successors, (121), 95 states have internal predecessors, (121), 45 states have call successors, (45), 17 states have call predecessors, (45), 17 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-11-20 19:00:20,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 210 transitions. [2022-11-20 19:00:20,957 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 210 transitions. Word has length 71 [2022-11-20 19:00:20,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:00:20,958 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 210 transitions. [2022-11-20 19:00:20,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 19:00:20,958 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 210 transitions. [2022-11-20 19:00:20,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-20 19:00:20,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:00:20,961 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] [2022-11-20 19:00:20,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 19:00:20,966 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:00:20,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:00:20,973 INFO L85 PathProgramCache]: Analyzing trace with hash -985806257, now seen corresponding path program 1 times [2022-11-20 19:00:20,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:00:20,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39070688] [2022-11-20 19:00:20,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:00:20,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:00:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:00:21,181 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 19:00:21,181 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:00:21,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39070688] [2022-11-20 19:00:21,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39070688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:00:21,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:00:21,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:00:21,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197503803] [2022-11-20 19:00:21,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:00:21,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:00:21,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:00:21,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:00:21,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:00:21,185 INFO L87 Difference]: Start difference. First operand 155 states and 210 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 19:00:21,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:00:21,332 INFO L93 Difference]: Finished difference Result 340 states and 479 transitions. [2022-11-20 19:00:21,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:00:21,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 76 [2022-11-20 19:00:21,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:00:21,349 INFO L225 Difference]: With dead ends: 340 [2022-11-20 19:00:21,349 INFO L226 Difference]: Without dead ends: 203 [2022-11-20 19:00:21,350 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 [2022-11-20 19:00:21,352 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 57 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:00:21,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 369 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:00:21,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-20 19:00:21,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 198. [2022-11-20 19:00:21,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 124 states have (on average 1.403225806451613) internal successors, (174), 127 states have internal predecessors, (174), 56 states have call successors, (56), 17 states have call predecessors, (56), 17 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-11-20 19:00:21,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 285 transitions. [2022-11-20 19:00:21,383 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 285 transitions. Word has length 76 [2022-11-20 19:00:21,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:00:21,384 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 285 transitions. [2022-11-20 19:00:21,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 19:00:21,384 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 285 transitions. [2022-11-20 19:00:21,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 19:00:21,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:00:21,392 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] [2022-11-20 19:00:21,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 19:00:21,393 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:00:21,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:00:21,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1010220095, now seen corresponding path program 1 times [2022-11-20 19:00:21,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:00:21,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153171759] [2022-11-20 19:00:21,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:00:21,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:00:21,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:00:21,611 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 19:00:21,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:00:21,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153171759] [2022-11-20 19:00:21,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153171759] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:00:21,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630855740] [2022-11-20 19:00:21,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:00:21,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:00:21,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:00:21,617 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:00:21,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 19:00:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:00:22,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 1004 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 19:00:22,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:00:22,099 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 19:00:22,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:00:22,224 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 19:00:22,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630855740] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:00:22,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1837183054] [2022-11-20 19:00:22,254 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2022-11-20 19:00:22,254 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:00:22,259 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:00:22,265 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:00:22,265 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:00:53,998 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-20 19:00:54,327 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-20 19:00:54,675 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:01:29,717 WARN L233 SmtUtils]: Spent 7.40s on a formula simplification. DAG size of input: 464 DAG size of output: 315 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:01:47,145 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification. DAG size of input: 498 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:01:57,736 WARN L233 SmtUtils]: Spent 9.24s on a formula simplification. DAG size of input: 508 DAG size of output: 383 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:02:06,415 WARN L233 SmtUtils]: Spent 8.35s on a formula simplification. DAG size of input: 564 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:02:15,992 WARN L233 SmtUtils]: Spent 9.27s on a formula simplification. DAG size of input: 566 DAG size of output: 366 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:02:25,387 WARN L233 SmtUtils]: Spent 9.05s on a formula simplification. DAG size of input: 568 DAG size of output: 361 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:02:34,928 WARN L233 SmtUtils]: Spent 9.18s on a formula simplification. DAG size of input: 564 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:02:36,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1837183054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:02:36,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 19:02:36,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-20 19:02:36,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834308723] [2022-11-20 19:02:36,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:02:36,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 19:02:36,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:02:36,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 19:02:36,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-11-20 19:02:36,289 INFO L87 Difference]: Start difference. First operand 198 states and 285 transitions. Second operand has 21 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-11-20 19:02:46,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:02:46,050 INFO L93 Difference]: Finished difference Result 475 states and 731 transitions. [2022-11-20 19:02:46,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 19:02:46,051 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 77 [2022-11-20 19:02:46,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:02:46,054 INFO L225 Difference]: With dead ends: 475 [2022-11-20 19:02:46,054 INFO L226 Difference]: Without dead ends: 295 [2022-11-20 19:02:46,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 101.6s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-11-20 19:02:46,056 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 140 mSDsluCounter, 2598 mSDsCounter, 0 mSdLazyCounter, 1982 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 2819 SdHoareTripleChecker+Invalid, 1992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-20 19:02:46,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 2819 Invalid, 1992 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 1982 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2022-11-20 19:02:46,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-20 19:02:46,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 221. [2022-11-20 19:02:46,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 146 states have (on average 1.417808219178082) internal successors, (207), 149 states have internal predecessors, (207), 56 states have call successors, (56), 18 states have call predecessors, (56), 18 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-11-20 19:02:46,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 318 transitions. [2022-11-20 19:02:46,206 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 318 transitions. Word has length 77 [2022-11-20 19:02:46,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:02:46,207 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 318 transitions. [2022-11-20 19:02:46,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-11-20 19:02:46,208 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 318 transitions. [2022-11-20 19:02:46,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-20 19:02:46,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:02:46,210 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] [2022-11-20 19:02:46,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 19:02:46,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:02:46,427 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:02:46,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:02:46,427 INFO L85 PathProgramCache]: Analyzing trace with hash 2119366253, now seen corresponding path program 1 times [2022-11-20 19:02:46,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:02:46,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586385786] [2022-11-20 19:02:46,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:02:46,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:02:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:02:46,570 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 19:02:46,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:02:46,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586385786] [2022-11-20 19:02:46,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586385786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:02:46,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:02:46,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:02:46,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987085479] [2022-11-20 19:02:46,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:02:46,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:02:46,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:02:46,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:02:46,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:02:46,575 INFO L87 Difference]: Start difference. First operand 221 states and 318 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 19:02:46,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:02:46,921 INFO L93 Difference]: Finished difference Result 535 states and 800 transitions. [2022-11-20 19:02:46,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:02:46,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 82 [2022-11-20 19:02:46,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:02:46,925 INFO L225 Difference]: With dead ends: 535 [2022-11-20 19:02:46,925 INFO L226 Difference]: Without dead ends: 338 [2022-11-20 19:02:46,926 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 [2022-11-20 19:02:46,927 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 55 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:02:46,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 372 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:02:46,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-11-20 19:02:47,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 333. [2022-11-20 19:02:47,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 233 states have (on average 1.4721030042918455) internal successors, (343), 236 states have internal predecessors, (343), 81 states have call successors, (81), 18 states have call predecessors, (81), 18 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2022-11-20 19:02:47,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 504 transitions. [2022-11-20 19:02:47,149 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 504 transitions. Word has length 82 [2022-11-20 19:02:47,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:02:47,150 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 504 transitions. [2022-11-20 19:02:47,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 19:02:47,150 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 504 transitions. [2022-11-20 19:02:47,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-20 19:02:47,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:02:47,153 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] [2022-11-20 19:02:47,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 19:02:47,154 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:02:47,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:02:47,154 INFO L85 PathProgramCache]: Analyzing trace with hash -101972100, now seen corresponding path program 1 times [2022-11-20 19:02:47,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:02:47,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063318850] [2022-11-20 19:02:47,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:02:47,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:02:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:02:47,322 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 19:02:47,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:02:47,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063318850] [2022-11-20 19:02:47,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063318850] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:02:47,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360983398] [2022-11-20 19:02:47,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:02:47,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:02:47,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:02:47,325 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:02:47,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 19:02:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:02:47,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 19:02:47,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:02:47,732 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 19:02:47,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:02:47,832 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 19:02:47,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360983398] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:02:47,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1386172153] [2022-11-20 19:02:47,837 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2022-11-20 19:02:47,838 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:02:47,838 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:02:47,839 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:02:47,839 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:03:34,496 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-20 19:03:34,800 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-11-20 19:03:35,118 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:03:57,814 WARN L233 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 450 DAG size of output: 245 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:04:03,267 WARN L233 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 473 DAG size of output: 265 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:04:10,513 WARN L233 SmtUtils]: Spent 7.08s on a formula simplification. DAG size of input: 464 DAG size of output: 315 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:04:21,457 WARN L233 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 486 DAG size of output: 272 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:04:27,920 WARN L233 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 498 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:04:38,869 WARN L233 SmtUtils]: Spent 9.55s on a formula simplification. DAG size of input: 508 DAG size of output: 383 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:04:59,562 WARN L233 SmtUtils]: Spent 20.38s on a formula simplification. DAG size of input: 579 DAG size of output: 438 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:05:25,005 WARN L233 SmtUtils]: Spent 8.21s on a formula simplification. DAG size of input: 549 DAG size of output: 401 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:05:32,929 WARN L233 SmtUtils]: Spent 7.45s on a formula simplification. DAG size of input: 580 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:05:33,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1386172153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:05:33,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 19:05:33,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-20 19:05:33,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438364842] [2022-11-20 19:05:33,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:05:33,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 19:05:33,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:05:33,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 19:05:33,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-11-20 19:05:33,171 INFO L87 Difference]: Start difference. First operand 333 states and 504 transitions. Second operand has 25 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-20 19:05:53,340 WARN L233 SmtUtils]: Spent 18.17s on a formula simplification. DAG size of input: 476 DAG size of output: 438 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:06:00,034 WARN L233 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 537 DAG size of output: 367 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:06:07,543 WARN L233 SmtUtils]: Spent 7.21s on a formula simplification. DAG size of input: 538 DAG size of output: 368 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:06:14,512 WARN L233 SmtUtils]: Spent 6.66s on a formula simplification. DAG size of input: 536 DAG size of output: 366 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:06:22,829 WARN L233 SmtUtils]: Spent 7.99s on a formula simplification. DAG size of input: 537 DAG size of output: 367 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:06:30,003 WARN L233 SmtUtils]: Spent 6.74s on a formula simplification. DAG size of input: 535 DAG size of output: 365 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:06:40,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:06:40,797 INFO L93 Difference]: Finished difference Result 748 states and 1187 transitions. [2022-11-20 19:06:40,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 19:06:40,798 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 83 [2022-11-20 19:06:40,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:06:40,804 INFO L225 Difference]: With dead ends: 748 [2022-11-20 19:06:40,804 INFO L226 Difference]: Without dead ends: 478 [2022-11-20 19:06:40,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 221 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 172.3s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 19:06:40,807 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 188 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 2362 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 2854 SdHoareTripleChecker+Invalid, 2380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:06:40,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 2854 Invalid, 2380 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 2362 Invalid, 0 Unknown, 0 Unchecked, 12.6s Time] [2022-11-20 19:06:40,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2022-11-20 19:06:41,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 394. [2022-11-20 19:06:41,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 290 states have (on average 1.5172413793103448) internal successors, (440), 295 states have internal predecessors, (440), 84 states have call successors, (84), 19 states have call predecessors, (84), 19 states have return successors, (83), 81 states have call predecessors, (83), 83 states have call successors, (83) [2022-11-20 19:06:41,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 607 transitions. [2022-11-20 19:06:41,210 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 607 transitions. Word has length 83 [2022-11-20 19:06:41,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:06:41,211 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 607 transitions. [2022-11-20 19:06:41,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-20 19:06:41,212 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 607 transitions. [2022-11-20 19:06:41,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-20 19:06:41,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:06:41,215 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] [2022-11-20 19:06:41,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 19:06:41,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:06:41,424 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:06:41,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:06:41,425 INFO L85 PathProgramCache]: Analyzing trace with hash -228070807, now seen corresponding path program 1 times [2022-11-20 19:06:41,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:06:41,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381830827] [2022-11-20 19:06:41,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:06:41,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:06:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:06:41,746 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 19:06:41,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:06:41,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381830827] [2022-11-20 19:06:41,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381830827] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:06:41,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385329045] [2022-11-20 19:06:41,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:06:41,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:06:41,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:06:41,749 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:06:41,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 19:06:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:06:42,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 1140 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 19:06:42,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:06:42,207 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 19:06:42,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:06:42,303 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 19:06:42,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385329045] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:06:42,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1967979872] [2022-11-20 19:06:42,308 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-11-20 19:06:42,309 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:06:42,309 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:06:42,309 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:06:42,310 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:07:29,858 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-20 19:07:30,237 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2022-11-20 19:07:30,316 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 243 for LOIs [2022-11-20 19:07:30,389 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 233 for LOIs [2022-11-20 19:07:30,502 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-20 19:07:30,971 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:08:01,691 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 464 DAG size of output: 315 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:08:13,407 WARN L233 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 486 DAG size of output: 272 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:08:20,100 WARN L233 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 498 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:08:30,055 WARN L233 SmtUtils]: Spent 8.64s on a formula simplification. DAG size of input: 508 DAG size of output: 383 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:08:49,560 WARN L233 SmtUtils]: Spent 19.11s on a formula simplification. DAG size of input: 619 DAG size of output: 470 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:09:05,250 WARN L233 SmtUtils]: Spent 8.93s on a formula simplification. DAG size of input: 545 DAG size of output: 397 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:09:18,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1967979872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:09:18,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 19:09:18,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-11-20 19:09:18,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607145556] [2022-11-20 19:09:18,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:09:18,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-20 19:09:18,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:09:18,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-20 19:09:18,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 19:09:18,686 INFO L87 Difference]: Start difference. First operand 394 states and 607 transitions. Second operand has 30 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-20 19:09:30,392 WARN L233 SmtUtils]: Spent 9.29s on a formula simplification. DAG size of input: 549 DAG size of output: 393 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:09:37,163 WARN L233 SmtUtils]: Spent 6.42s on a formula simplification. DAG size of input: 580 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:09:52,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:09:52,037 INFO L93 Difference]: Finished difference Result 871 states and 1395 transitions. [2022-11-20 19:09:52,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 19:09:52,038 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) Word has length 86 [2022-11-20 19:09:52,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:09:52,042 INFO L225 Difference]: With dead ends: 871 [2022-11-20 19:09:52,043 INFO L226 Difference]: Without dead ends: 601 [2022-11-20 19:09:52,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 225 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 123.9s TimeCoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 19:09:52,045 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 174 mSDsluCounter, 3077 mSDsCounter, 0 mSdLazyCounter, 3064 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 3271 SdHoareTripleChecker+Invalid, 3079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:09:52,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 3271 Invalid, 3079 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 3064 Invalid, 0 Unknown, 0 Unchecked, 16.0s Time] [2022-11-20 19:09:52,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-11-20 19:09:52,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 525. [2022-11-20 19:09:52,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 413 states have (on average 1.5665859564164648) internal successors, (647), 420 states have internal predecessors, (647), 89 states have call successors, (89), 22 states have call predecessors, (89), 22 states have return successors, (88), 84 states have call predecessors, (88), 88 states have call successors, (88) [2022-11-20 19:09:52,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 824 transitions. [2022-11-20 19:09:52,718 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 824 transitions. Word has length 86 [2022-11-20 19:09:52,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:09:52,719 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 824 transitions. [2022-11-20 19:09:52,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-20 19:09:52,720 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 824 transitions. [2022-11-20 19:09:52,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-20 19:09:52,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:09:52,723 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] [2022-11-20 19:09:52,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 19:09:52,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:09:52,934 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:09:52,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:09:52,934 INFO L85 PathProgramCache]: Analyzing trace with hash -499121030, now seen corresponding path program 1 times [2022-11-20 19:09:52,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:09:52,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230507640] [2022-11-20 19:09:52,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:09:52,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:09:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:09:53,111 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 19:09:53,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:09:53,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230507640] [2022-11-20 19:09:53,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230507640] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:09:53,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129473047] [2022-11-20 19:09:53,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:09:53,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:09:53,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:09:53,114 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:09:53,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10d11cbd-df79-4758-ba82-481ba0e0c9c6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 19:09:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:09:53,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 19:09:53,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:09:53,552 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 19:09:53,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:09:53,659 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 19:09:53,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129473047] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:09:53,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [425943172] [2022-11-20 19:09:53,663 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2022-11-20 19:09:53,663 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:09:53,664 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:09:53,664 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:09:53,664 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:10:52,135 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-20 19:10:52,489 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-20 19:10:52,853 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 465 for LOIs [2022-11-20 19:11:25,151 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 463 for LOIs [2022-11-20 19:11:52,521 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 247 for LOIs [2022-11-20 19:11:53,328 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 247 for LOIs [2022-11-20 19:11:53,376 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 437 for LOIs [2022-11-20 19:11:53,658 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 447 for LOIs [2022-11-20 19:11:54,402 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 448 for LOIs [2022-11-20 19:11:55,078 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:12:00,818 WARN L233 SmtUtils]: Spent 5.70s on a formula simplification. DAG size of input: 461 DAG size of output: 450 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:12:14,748 WARN L233 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:12:21,454 WARN L233 SmtUtils]: Spent 6.56s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:12:36,717 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 464 DAG size of output: 315 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:12:48,108 WARN L233 SmtUtils]: Spent 5.62s on a formula simplification. DAG size of input: 486 DAG size of output: 272 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:12:55,457 WARN L233 SmtUtils]: Spent 7.05s on a formula simplification. DAG size of input: 498 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:13:05,774 WARN L233 SmtUtils]: Spent 8.68s on a formula simplification. DAG size of input: 508 DAG size of output: 383 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:13:18,590 WARN L233 SmtUtils]: Spent 12.42s on a formula simplification. DAG size of input: 599 DAG size of output: 356 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:13:31,170 WARN L233 SmtUtils]: Spent 12.12s on a formula simplification. DAG size of input: 601 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)