./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec9_product26.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce100d5e-46b0-4097-9d6b-fa41803d3080/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce100d5e-46b0-4097-9d6b-fa41803d3080/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce100d5e-46b0-4097-9d6b-fa41803d3080/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce100d5e-46b0-4097-9d6b-fa41803d3080/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec9_product26.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce100d5e-46b0-4097-9d6b-fa41803d3080/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce100d5e-46b0-4097-9d6b-fa41803d3080/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 82ac70e4cab6ba17956a8bc3031bcd401426df4beecacca096cae721fbfd8afd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 13:51:19,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:51:19,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:51:19,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:51:19,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:51:19,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:51:19,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:51:19,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:51:19,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:51:19,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:51:19,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:51:19,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:51:19,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:51:19,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:51:19,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:51:19,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:51:19,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:51:19,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:51:19,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:51:19,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:51:19,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:51:19,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:51:19,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:51:19,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:51:19,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:51:19,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:51:19,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:51:19,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:51:19,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:51:19,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:51:19,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:51:19,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:51:19,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:51:19,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:51:19,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:51:19,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:51:19,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:51:19,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:51:19,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:51:19,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:51:19,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:51:19,592 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce100d5e-46b0-4097-9d6b-fa41803d3080/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 13:51:19,628 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:51:19,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:51:19,629 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:51:19,629 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:51:19,630 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:51:19,631 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:51:19,631 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:51:19,631 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:51:19,631 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:51:19,632 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:51:19,633 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:51:19,633 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:51:19,633 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:51:19,634 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:51:19,634 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:51:19,634 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:51:19,634 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:51:19,635 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:51:19,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:51:19,636 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 13:51:19,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:51:19,636 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 13:51:19,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:51:19,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:51:19,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:51:19,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:51:19,637 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 13:51:19,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:51:19,638 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:51:19,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:51:19,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:51:19,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:51:19,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:51:19,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:51:19,640 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:51:19,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:51:19,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:51:19,640 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:51:19,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:51:19,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:51:19,642 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:51:19,642 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_ce100d5e-46b0-4097-9d6b-fa41803d3080/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce100d5e-46b0-4097-9d6b-fa41803d3080/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82ac70e4cab6ba17956a8bc3031bcd401426df4beecacca096cae721fbfd8afd [2022-11-23 13:51:19,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:51:20,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:51:20,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:51:20,005 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:51:20,006 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:51:20,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce100d5e-46b0-4097-9d6b-fa41803d3080/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/email_spec9_product26.cil.c [2022-11-23 13:51:23,271 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:51:23,617 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:51:23,631 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce100d5e-46b0-4097-9d6b-fa41803d3080/sv-benchmarks/c/product-lines/email_spec9_product26.cil.c [2022-11-23 13:51:23,663 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce100d5e-46b0-4097-9d6b-fa41803d3080/bin/utaipan-Q6hlc19bkW/data/6b5d03300/bda58c16c302490b9c19adadbda8b620/FLAGc4b30773b [2022-11-23 13:51:23,713 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce100d5e-46b0-4097-9d6b-fa41803d3080/bin/utaipan-Q6hlc19bkW/data/6b5d03300/bda58c16c302490b9c19adadbda8b620 [2022-11-23 13:51:23,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:51:23,721 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:51:23,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:51:23,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:51:23,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:51:23,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:51:23" (1/1) ... [2022-11-23 13:51:23,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d610ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:23, skipping insertion in model container [2022-11-23 13:51:23,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:51:23" (1/1) ... [2022-11-23 13:51:23,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:51:23,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:51:24,212 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_ce100d5e-46b0-4097-9d6b-fa41803d3080/sv-benchmarks/c/product-lines/email_spec9_product26.cil.c[24949,24962] [2022-11-23 13:51:24,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:51:24,499 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:51:24,587 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_ce100d5e-46b0-4097-9d6b-fa41803d3080/sv-benchmarks/c/product-lines/email_spec9_product26.cil.c[24949,24962] [2022-11-23 13:51:24,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:51:24,676 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:51:24,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:24 WrapperNode [2022-11-23 13:51:24,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:51:24,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:51:24,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:51:24,679 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:51:24,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:24" (1/1) ... [2022-11-23 13:51:24,754 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:24" (1/1) ... [2022-11-23 13:51:24,863 INFO L138 Inliner]: procedures = 132, calls = 230, calls flagged for inlining = 61, calls inlined = 58, statements flattened = 1109 [2022-11-23 13:51:24,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:51:24,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:51:24,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:51:24,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:51:24,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:24" (1/1) ... [2022-11-23 13:51:24,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:24" (1/1) ... [2022-11-23 13:51:24,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:24" (1/1) ... [2022-11-23 13:51:24,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:24" (1/1) ... [2022-11-23 13:51:24,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:24" (1/1) ... [2022-11-23 13:51:24,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:24" (1/1) ... [2022-11-23 13:51:24,974 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:24" (1/1) ... [2022-11-23 13:51:24,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:24" (1/1) ... [2022-11-23 13:51:25,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:51:25,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:51:25,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:51:25,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:51:25,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:24" (1/1) ... [2022-11-23 13:51:25,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:51:25,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce100d5e-46b0-4097-9d6b-fa41803d3080/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:51:25,075 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce100d5e-46b0-4097-9d6b-fa41803d3080/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:51:25,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce100d5e-46b0-4097-9d6b-fa41803d3080/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:51:25,137 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-23 13:51:25,138 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-23 13:51:25,138 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-23 13:51:25,138 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-23 13:51:25,138 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-23 13:51:25,138 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-23 13:51:25,139 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-23 13:51:25,139 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-23 13:51:25,139 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-23 13:51:25,139 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-23 13:51:25,139 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-23 13:51:25,139 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-23 13:51:25,140 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-23 13:51:25,140 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-23 13:51:25,140 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-23 13:51:25,140 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-23 13:51:25,140 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-23 13:51:25,141 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-23 13:51:25,141 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-23 13:51:25,141 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-23 13:51:25,142 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-23 13:51:25,142 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-23 13:51:25,142 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-23 13:51:25,143 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-23 13:51:25,143 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-23 13:51:25,144 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-23 13:51:25,144 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-23 13:51:25,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:51:25,145 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-23 13:51:25,145 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-23 13:51:25,147 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-23 13:51:25,147 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-23 13:51:25,147 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-23 13:51:25,147 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-23 13:51:25,148 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-23 13:51:25,148 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-23 13:51:25,148 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-23 13:51:25,148 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-23 13:51:25,148 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-23 13:51:25,148 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-23 13:51:25,149 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-23 13:51:25,149 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-23 13:51:25,149 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-23 13:51:25,150 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-23 13:51:25,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:51:25,150 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-23 13:51:25,151 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-23 13:51:25,151 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-23 13:51:25,151 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-23 13:51:25,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:51:25,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:51:25,608 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:51:25,623 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:51:26,724 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:51:27,464 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:51:27,464 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 13:51:27,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:51:27 BoogieIcfgContainer [2022-11-23 13:51:27,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:51:27,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:51:27,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:51:27,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:51:27,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:51:23" (1/3) ... [2022-11-23 13:51:27,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51afa27f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:51:27, skipping insertion in model container [2022-11-23 13:51:27,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:24" (2/3) ... [2022-11-23 13:51:27,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51afa27f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:51:27, skipping insertion in model container [2022-11-23 13:51:27,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:51:27" (3/3) ... [2022-11-23 13:51:27,486 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec9_product26.cil.c [2022-11-23 13:51:27,512 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:51:27,512 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 13:51:27,603 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:51:27,612 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;@2ec39ef4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:51:27,613 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 13:51:27,622 INFO L276 IsEmpty]: Start isEmpty. Operand has 200 states, 113 states have (on average 1.3185840707964602) internal successors, (149), 118 states have internal predecessors, (149), 62 states have call successors, (62), 23 states have call predecessors, (62), 23 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-23 13:51:27,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-23 13:51:27,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:51:27,644 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:51:27,645 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:51:27,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:51:27,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1313338490, now seen corresponding path program 1 times [2022-11-23 13:51:27,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:51:27,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399940729] [2022-11-23 13:51:27,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:27,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:51:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:28,142 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 13:51:28,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:51:28,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399940729] [2022-11-23 13:51:28,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399940729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:51:28,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:51:28,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:51:28,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199842218] [2022-11-23 13:51:28,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:51:28,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 13:51:28,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:51:28,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 13:51:28,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 13:51:28,199 INFO L87 Difference]: Start difference. First operand has 200 states, 113 states have (on average 1.3185840707964602) internal successors, (149), 118 states have internal predecessors, (149), 62 states have call successors, (62), 23 states have call predecessors, (62), 23 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 13:51:28,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:51:28,362 INFO L93 Difference]: Finished difference Result 308 states and 417 transitions. [2022-11-23 13:51:28,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 13:51:28,365 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 63 [2022-11-23 13:51:28,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:51:28,376 INFO L225 Difference]: With dead ends: 308 [2022-11-23 13:51:28,376 INFO L226 Difference]: Without dead ends: 197 [2022-11-23 13:51:28,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 13:51:28,385 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:51:28,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 230 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:51:28,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-23 13:51:28,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2022-11-23 13:51:28,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 111 states have (on average 1.2882882882882882) internal successors, (143), 115 states have internal predecessors, (143), 62 states have call successors, (62), 23 states have call predecessors, (62), 23 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-23 13:51:28,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 266 transitions. [2022-11-23 13:51:28,453 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 266 transitions. Word has length 63 [2022-11-23 13:51:28,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:51:28,455 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 266 transitions. [2022-11-23 13:51:28,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 13:51:28,456 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 266 transitions. [2022-11-23 13:51:28,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-23 13:51:28,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:51:28,460 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:51:28,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:51:28,461 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:51:28,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:51:28,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1425382826, now seen corresponding path program 1 times [2022-11-23 13:51:28,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:51:28,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664090356] [2022-11-23 13:51:28,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:28,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:51:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:28,725 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 13:51:28,726 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:51:28,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664090356] [2022-11-23 13:51:28,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664090356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:51:28,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:51:28,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:51:28,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625968681] [2022-11-23 13:51:28,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:51:28,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:51:28,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:51:28,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:51:28,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:51:28,732 INFO L87 Difference]: Start difference. First operand 197 states and 266 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 13:51:28,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:51:28,976 INFO L93 Difference]: Finished difference Result 304 states and 402 transitions. [2022-11-23 13:51:28,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:51:28,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 64 [2022-11-23 13:51:28,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:51:28,979 INFO L225 Difference]: With dead ends: 304 [2022-11-23 13:51:28,980 INFO L226 Difference]: Without dead ends: 199 [2022-11-23 13:51:28,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:51:28,982 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 0 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:51:28,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 453 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:51:28,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-23 13:51:29,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2022-11-23 13:51:29,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 113 states have (on average 1.2831858407079646) internal successors, (145), 117 states have internal predecessors, (145), 62 states have call successors, (62), 23 states have call predecessors, (62), 23 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-23 13:51:29,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 268 transitions. [2022-11-23 13:51:29,006 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 268 transitions. Word has length 64 [2022-11-23 13:51:29,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:51:29,006 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 268 transitions. [2022-11-23 13:51:29,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 13:51:29,007 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 268 transitions. [2022-11-23 13:51:29,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-23 13:51:29,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:51:29,010 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:51:29,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 13:51:29,011 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:51:29,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:51:29,011 INFO L85 PathProgramCache]: Analyzing trace with hash 171544941, now seen corresponding path program 1 times [2022-11-23 13:51:29,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:51:29,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057877805] [2022-11-23 13:51:29,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:29,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:51:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:29,183 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 13:51:29,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:51:29,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057877805] [2022-11-23 13:51:29,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057877805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:51:29,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:51:29,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:51:29,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182917094] [2022-11-23 13:51:29,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:51:29,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:51:29,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:51:29,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:51:29,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:51:29,191 INFO L87 Difference]: Start difference. First operand 199 states and 268 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 13:51:29,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:51:29,375 INFO L93 Difference]: Finished difference Result 433 states and 603 transitions. [2022-11-23 13:51:29,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:51:29,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 69 [2022-11-23 13:51:29,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:51:29,379 INFO L225 Difference]: With dead ends: 433 [2022-11-23 13:51:29,379 INFO L226 Difference]: Without dead ends: 252 [2022-11-23 13:51:29,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:51:29,381 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 59 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:51:29,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 472 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:51:29,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-11-23 13:51:29,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 247. [2022-11-23 13:51:29,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 147 states have (on average 1.3605442176870748) internal successors, (200), 151 states have internal predecessors, (200), 76 states have call successors, (76), 23 states have call predecessors, (76), 23 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2022-11-23 13:51:29,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 351 transitions. [2022-11-23 13:51:29,411 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 351 transitions. Word has length 69 [2022-11-23 13:51:29,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:51:29,411 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 351 transitions. [2022-11-23 13:51:29,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 13:51:29,412 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 351 transitions. [2022-11-23 13:51:29,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-23 13:51:29,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:51:29,422 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:51:29,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 13:51:29,423 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:51:29,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:51:29,423 INFO L85 PathProgramCache]: Analyzing trace with hash -2067936290, now seen corresponding path program 1 times [2022-11-23 13:51:29,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:51:29,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21656574] [2022-11-23 13:51:29,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:29,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:51:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:29,710 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 13:51:29,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:51:29,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21656574] [2022-11-23 13:51:29,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21656574] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:51:29,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352421645] [2022-11-23 13:51:29,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:29,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:51:29,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce100d5e-46b0-4097-9d6b-fa41803d3080/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:51:29,717 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce100d5e-46b0-4097-9d6b-fa41803d3080/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:51:29,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce100d5e-46b0-4097-9d6b-fa41803d3080/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 13:51:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:30,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 1012 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 13:51:30,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:51:30,315 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 13:51:30,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:51:30,435 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 13:51:30,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352421645] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:51:30,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [351318286] [2022-11-23 13:51:30,463 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-11-23 13:51:30,463 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:51:30,468 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:51:30,475 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:51:30,476 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:52:11,716 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-23 13:52:12,030 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-11-23 13:52:12,344 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 471 for LOIs [2022-11-23 13:52:44,591 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 451 for LOIs [2022-11-23 13:52:44,875 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 469 for LOIs [2022-11-23 13:52:48,818 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 268 for LOIs [2022-11-23 13:52:52,996 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 239 for LOIs [2022-11-23 13:52:53,034 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 452 for LOIs [2022-11-23 13:52:53,691 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 439 for LOIs [2022-11-23 13:52:53,963 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:53:08,346 WARN L233 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 443 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:53:14,800 WARN L233 SmtUtils]: Spent 6.34s on a formula simplification. DAG size of input: 466 DAG size of output: 347 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:53:21,993 WARN L233 SmtUtils]: Spent 6.33s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:53:28,670 WARN L233 SmtUtils]: Spent 6.54s on a formula simplification. DAG size of input: 471 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:53:43,906 WARN L233 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 490 DAG size of output: 314 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:53:49,817 WARN L233 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 502 DAG size of output: 322 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:53:59,788 WARN L233 SmtUtils]: Spent 8.65s on a formula simplification. DAG size of input: 512 DAG size of output: 381 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:54:05,645 WARN L233 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 560 DAG size of output: 324 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:54:11,369 WARN L233 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 562 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:54:27,434 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 568 DAG size of output: 329 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:54:32,965 WARN L233 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 561 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:54:54,838 WARN L233 SmtUtils]: Spent 6.57s on a formula simplification. DAG size of input: 523 DAG size of output: 334 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:55:10,670 WARN L233 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 519 DAG size of output: 297 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:55:54,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [351318286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:55:54,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:55:54,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [4, 4, 4] total 51 [2022-11-23 13:55:54,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394326680] [2022-11-23 13:55:54,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:55:54,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-23 13:55:54,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:55:54,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-23 13:55:54,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=2418, Unknown=0, NotChecked=0, Total=2550 [2022-11-23 13:55:54,420 INFO L87 Difference]: Start difference. First operand 247 states and 351 transitions. Second operand has 46 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 28 states have internal predecessors, (37), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-23 13:56:02,890 WARN L233 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 500 DAG size of output: 352 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:56:08,827 WARN L233 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 502 DAG size of output: 354 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:56:14,930 WARN L233 SmtUtils]: Spent 5.70s on a formula simplification. DAG size of input: 511 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:56:21,039 WARN L233 SmtUtils]: Spent 5.71s on a formula simplification. DAG size of input: 507 DAG size of output: 353 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:56:27,392 WARN L233 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 513 DAG size of output: 359 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:57:05,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:05,473 INFO L93 Difference]: Finished difference Result 635 states and 970 transitions. [2022-11-23 13:57:05,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-23 13:57:05,474 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 28 states have internal predecessors, (37), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 70 [2022-11-23 13:57:05,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:05,477 INFO L225 Difference]: With dead ends: 635 [2022-11-23 13:57:05,477 INFO L226 Difference]: Without dead ends: 406 [2022-11-23 13:57:05,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 161 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 224.7s TimeCoverageRelationStatistics Valid=207, Invalid=3575, Unknown=0, NotChecked=0, Total=3782 [2022-11-23 13:57:05,498 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 310 mSDsluCounter, 5531 mSDsCounter, 0 mSdLazyCounter, 6626 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 5799 SdHoareTripleChecker+Invalid, 6662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 6626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:05,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 5799 Invalid, 6662 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [36 Valid, 6626 Invalid, 0 Unknown, 0 Unchecked, 26.1s Time] [2022-11-23 13:57:05,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-11-23 13:57:05,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 301. [2022-11-23 13:57:05,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 188 states have (on average 1.351063829787234) internal successors, (254), 192 states have internal predecessors, (254), 84 states have call successors, (84), 31 states have call predecessors, (84), 28 states have return successors, (83), 79 states have call predecessors, (83), 83 states have call successors, (83) [2022-11-23 13:57:05,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 421 transitions. [2022-11-23 13:57:05,646 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 421 transitions. Word has length 70 [2022-11-23 13:57:05,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:05,646 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 421 transitions. [2022-11-23 13:57:05,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 28 states have internal predecessors, (37), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-23 13:57:05,647 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 421 transitions. [2022-11-23 13:57:05,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-23 13:57:05,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:05,650 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:57:05,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce100d5e-46b0-4097-9d6b-fa41803d3080/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 13:57:05,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce100d5e-46b0-4097-9d6b-fa41803d3080/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:57:05,864 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:57:05,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:05,864 INFO L85 PathProgramCache]: Analyzing trace with hash 703972379, now seen corresponding path program 1 times [2022-11-23 13:57:05,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:05,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328554340] [2022-11-23 13:57:05,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:05,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:06,005 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 13:57:06,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:06,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328554340] [2022-11-23 13:57:06,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328554340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:57:06,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:57:06,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:57:06,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786919435] [2022-11-23 13:57:06,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:57:06,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:57:06,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:06,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:57:06,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:57:06,009 INFO L87 Difference]: Start difference. First operand 301 states and 421 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 13:57:06,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:06,384 INFO L93 Difference]: Finished difference Result 704 states and 1022 transitions. [2022-11-23 13:57:06,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:57:06,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 75 [2022-11-23 13:57:06,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:06,392 INFO L225 Difference]: With dead ends: 704 [2022-11-23 13:57:06,393 INFO L226 Difference]: Without dead ends: 429 [2022-11-23 13:57:06,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:57:06,395 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 57 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:06,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 478 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:57:06,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-11-23 13:57:06,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 422. [2022-11-23 13:57:06,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 278 states have (on average 1.4172661870503598) internal successors, (394), 282 states have internal predecessors, (394), 115 states have call successors, (115), 31 states have call predecessors, (115), 28 states have return successors, (114), 110 states have call predecessors, (114), 114 states have call successors, (114) [2022-11-23 13:57:06,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 623 transitions. [2022-11-23 13:57:06,592 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 623 transitions. Word has length 75 [2022-11-23 13:57:06,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:06,592 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 623 transitions. [2022-11-23 13:57:06,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 13:57:06,593 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 623 transitions. [2022-11-23 13:57:06,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-23 13:57:06,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:06,596 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:57:06,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 13:57:06,596 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:57:06,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:06,597 INFO L85 PathProgramCache]: Analyzing trace with hash 2079033167, now seen corresponding path program 1 times [2022-11-23 13:57:06,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:06,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884480165] [2022-11-23 13:57:06,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:06,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:06,726 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 13:57:06,726 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:06,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884480165] [2022-11-23 13:57:06,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884480165] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:57:06,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229294233] [2022-11-23 13:57:06,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:06,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:57:06,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce100d5e-46b0-4097-9d6b-fa41803d3080/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:57:06,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce100d5e-46b0-4097-9d6b-fa41803d3080/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:57:06,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce100d5e-46b0-4097-9d6b-fa41803d3080/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 13:57:07,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:07,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 13:57:07,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:57:07,098 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 13:57:07,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:57:07,168 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 13:57:07,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229294233] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:57:07,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1153587163] [2022-11-23 13:57:07,172 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2022-11-23 13:57:07,172 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:57:07,173 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:57:07,173 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:57:07,173 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:57:52,247 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-23 13:57:52,533 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-23 13:57:52,819 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:58:06,851 WARN L233 SmtUtils]: Spent 5.87s on a formula simplification. DAG size of input: 443 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:58:13,208 WARN L233 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 466 DAG size of output: 347 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:58:37,982 WARN L233 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 490 DAG size of output: 314 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:58:43,630 WARN L233 SmtUtils]: Spent 5.45s on a formula simplification. DAG size of input: 502 DAG size of output: 322 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:58:53,034 WARN L233 SmtUtils]: Spent 8.14s on a formula simplification. DAG size of input: 512 DAG size of output: 381 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:59:12,635 WARN L233 SmtUtils]: Spent 19.29s on a formula simplification. DAG size of input: 583 DAG size of output: 457 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:59:33,731 WARN L233 SmtUtils]: Spent 8.75s on a formula simplification. DAG size of input: 551 DAG size of output: 429 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:59:43,002 WARN L233 SmtUtils]: Spent 8.87s on a formula simplification. DAG size of input: 553 DAG size of output: 431 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:59:52,966 WARN L233 SmtUtils]: Spent 9.56s on a formula simplification. DAG size of input: 584 DAG size of output: 408 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:59:53,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1153587163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:59:53,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:59:53,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-23 13:59:53,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680562639] [2022-11-23 13:59:53,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:59:53,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-23 13:59:53,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:59:53,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-23 13:59:53,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-11-23 13:59:53,170 INFO L87 Difference]: Start difference. First operand 422 states and 623 transitions. Second operand has 25 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-23 14:00:10,258 WARN L233 SmtUtils]: Spent 15.46s on a formula simplification. DAG size of input: 475 DAG size of output: 443 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:00:16,586 WARN L233 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 531 DAG size of output: 369 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:00:22,420 WARN L233 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 532 DAG size of output: 370 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:00:28,276 WARN L233 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 530 DAG size of output: 368 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:00:34,897 WARN L233 SmtUtils]: Spent 6.31s on a formula simplification. DAG size of input: 531 DAG size of output: 369 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:00:41,575 WARN L233 SmtUtils]: Spent 6.33s on a formula simplification. DAG size of input: 529 DAG size of output: 367 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:00:49,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:00:49,498 INFO L93 Difference]: Finished difference Result 836 states and 1273 transitions. [2022-11-23 14:00:49,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-23 14:00:49,499 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 76 [2022-11-23 14:00:49,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:00:49,502 INFO L225 Difference]: With dead ends: 836 [2022-11-23 14:00:49,503 INFO L226 Difference]: Without dead ends: 507 [2022-11-23 14:00:49,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 200 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 166.8s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2022-11-23 14:00:49,505 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 194 mSDsluCounter, 3292 mSDsCounter, 0 mSdLazyCounter, 2000 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 3515 SdHoareTripleChecker+Invalid, 2027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:00:49,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 3515 Invalid, 2027 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 2000 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2022-11-23 14:00:49,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-11-23 14:00:49,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 452. [2022-11-23 14:00:49,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 306 states have (on average 1.4215686274509804) internal successors, (435), 310 states have internal predecessors, (435), 116 states have call successors, (116), 32 states have call predecessors, (116), 29 states have return successors, (115), 111 states have call predecessors, (115), 115 states have call successors, (115) [2022-11-23 14:00:49,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 666 transitions. [2022-11-23 14:00:49,771 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 666 transitions. Word has length 76 [2022-11-23 14:00:49,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:00:49,772 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 666 transitions. [2022-11-23 14:00:49,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-23 14:00:49,772 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 666 transitions. [2022-11-23 14:00:49,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-23 14:00:49,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:00:49,776 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:00:49,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce100d5e-46b0-4097-9d6b-fa41803d3080/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:00:49,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce100d5e-46b0-4097-9d6b-fa41803d3080/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:00:49,983 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:00:49,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:00:49,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1044069344, now seen corresponding path program 1 times [2022-11-23 14:00:49,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:00:49,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975892906] [2022-11-23 14:00:49,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:00:49,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:00:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:00:50,164 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:00:50,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:00:50,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975892906] [2022-11-23 14:00:50,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975892906] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:00:50,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376644770] [2022-11-23 14:00:50,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:00:50,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:00:50,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce100d5e-46b0-4097-9d6b-fa41803d3080/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:00:50,167 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce100d5e-46b0-4097-9d6b-fa41803d3080/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:00:50,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce100d5e-46b0-4097-9d6b-fa41803d3080/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:00:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:00:50,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:00:50,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:00:50,544 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:00:50,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:00:50,623 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:00:50,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376644770] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:00:50,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1001037203] [2022-11-23 14:00:50,630 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2022-11-23 14:00:50,630 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:00:50,631 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:00:50,631 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:00:50,631 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:02:23,696 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-23 14:02:23,988 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 231 for LOIs [2022-11-23 14:02:24,047 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 230 for LOIs [2022-11-23 14:02:24,107 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 230 for LOIs [2022-11-23 14:02:25,353 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 213 for LOIs [2022-11-23 14:02:25,410 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 210 for LOIs [2022-11-23 14:02:25,440 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-11-23 14:02:25,735 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 230 for LOIs [2022-11-23 14:02:26,312 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 240 for LOIs [2022-11-23 14:02:29,681 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 211 for LOIs [2022-11-23 14:02:29,717 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 220 for LOIs [2022-11-23 14:02:29,824 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 202 for LOIs [2022-11-23 14:02:29,854 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:02:44,043 WARN L233 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:02:50,548 WARN L233 SmtUtils]: Spent 6.41s on a formula simplification. DAG size of input: 467 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:02:57,530 WARN L233 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:03:04,175 WARN L233 SmtUtils]: Spent 6.49s on a formula simplification. DAG size of input: 471 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:03:19,239 WARN L233 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 490 DAG size of output: 314 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:03:24,831 WARN L233 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 502 DAG size of output: 322 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:03:34,213 WARN L233 SmtUtils]: Spent 8.09s on a formula simplification. DAG size of input: 512 DAG size of output: 381 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:04:31,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1001037203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:31,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:04:31,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [4, 4, 4] total 61 [2022-11-23 14:04:31,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755888054] [2022-11-23 14:04:31,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:31,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-23 14:04:31,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:31,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-23 14:04:31,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=3502, Unknown=0, NotChecked=0, Total=3660 [2022-11-23 14:04:31,225 INFO L87 Difference]: Start difference. First operand 452 states and 666 transitions. Second operand has 56 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 32 states have internal predecessors, (40), 18 states have call successors, (18), 13 states have call predecessors, (18), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-23 14:04:40,220 WARN L233 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 495 DAG size of output: 353 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:04:46,325 WARN L233 SmtUtils]: Spent 5.64s on a formula simplification. DAG size of input: 497 DAG size of output: 355 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:04:52,380 WARN L233 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 507 DAG size of output: 361 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)