./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product28.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_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/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_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/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_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/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 21774f07edc6bb728cb664e1a2361d7b986cd58290bb234c442a42ac18f35f10 --- 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 13:49:11,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:49:11,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:49:11,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:49:11,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:49:11,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:49:11,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:49:11,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:49:11,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:49:11,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:49:11,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:49:11,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:49:11,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:49:11,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:49:11,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:49:11,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:49:11,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:49:11,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:49:11,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:49:11,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:49:11,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:49:11,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:49:11,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:49:11,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:49:11,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:49:11,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:49:11,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:49:11,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:49:11,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:49:11,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:49:11,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:49:11,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:49:11,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:49:11,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:49:11,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:49:11,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:49:11,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:49:11,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:49:11,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:49:11,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:49:11,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:49:11,699 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 13:49:11,737 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:49:11,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:49:11,738 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:49:11,738 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:49:11,739 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:49:11,739 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:49:11,740 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:49:11,740 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:49:11,740 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:49:11,740 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:49:11,741 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:49:11,741 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:49:11,741 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:49:11,741 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:49:11,741 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:49:11,742 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:49:11,742 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:49:11,742 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:49:11,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:49:11,743 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 13:49:11,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:49:11,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 13:49:11,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:49:11,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:49:11,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:49:11,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:49:11,745 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 13:49:11,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:49:11,745 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:49:11,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:49:11,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:49:11,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:49:11,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:49:11,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:49:11,746 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:49:11,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:49:11,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:49:11,747 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:49:11,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:49:11,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:49:11,748 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:49:11,748 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_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21774f07edc6bb728cb664e1a2361d7b986cd58290bb234c442a42ac18f35f10 [2022-11-23 13:49:11,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:49:12,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:49:12,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:49:12,028 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:49:12,029 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:49:12,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/email_spec6_product28.cil.c [2022-11-23 13:49:15,079 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:49:15,422 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:49:15,423 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/sv-benchmarks/c/product-lines/email_spec6_product28.cil.c [2022-11-23 13:49:15,459 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/data/f78c3a38d/ef4b49d5805e4c86af3b1e171d2f9553/FLAG9aa2a482a [2022-11-23 13:49:15,476 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/data/f78c3a38d/ef4b49d5805e4c86af3b1e171d2f9553 [2022-11-23 13:49:15,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:49:15,480 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:49:15,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:49:15,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:49:15,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:49:15,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:49:15" (1/1) ... [2022-11-23 13:49:15,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69b4fad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:15, skipping insertion in model container [2022-11-23 13:49:15,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:49:15" (1/1) ... [2022-11-23 13:49:15,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:49:15,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:49:16,205 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_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/sv-benchmarks/c/product-lines/email_spec6_product28.cil.c[64121,64134] [2022-11-23 13:49:16,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:49:16,222 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:49:16,332 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_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/sv-benchmarks/c/product-lines/email_spec6_product28.cil.c[64121,64134] [2022-11-23 13:49:16,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:49:16,364 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:49:16,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:16 WrapperNode [2022-11-23 13:49:16,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:49:16,365 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:49:16,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:49:16,366 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:49:16,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:16" (1/1) ... [2022-11-23 13:49:16,400 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:16" (1/1) ... [2022-11-23 13:49:16,470 INFO L138 Inliner]: procedures = 129, calls = 215, calls flagged for inlining = 56, calls inlined = 46, statements flattened = 879 [2022-11-23 13:49:16,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:49:16,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:49:16,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:49:16,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:49:16,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:16" (1/1) ... [2022-11-23 13:49:16,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:16" (1/1) ... [2022-11-23 13:49:16,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:16" (1/1) ... [2022-11-23 13:49:16,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:16" (1/1) ... [2022-11-23 13:49:16,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:16" (1/1) ... [2022-11-23 13:49:16,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:16" (1/1) ... [2022-11-23 13:49:16,547 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:16" (1/1) ... [2022-11-23 13:49:16,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:16" (1/1) ... [2022-11-23 13:49:16,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:49:16,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:49:16,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:49:16,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:49:16,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:16" (1/1) ... [2022-11-23 13:49:16,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:49:16,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:49:16,591 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:49:16,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:49:16,655 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-23 13:49:16,656 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-23 13:49:16,656 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-23 13:49:16,656 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-23 13:49:16,656 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-23 13:49:16,656 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-23 13:49:16,657 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-23 13:49:16,657 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-23 13:49:16,657 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-23 13:49:16,657 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-23 13:49:16,657 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-23 13:49:16,658 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-23 13:49:16,658 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-23 13:49:16,658 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-23 13:49:16,658 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-23 13:49:16,658 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-23 13:49:16,659 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-23 13:49:16,659 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-23 13:49:16,659 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-23 13:49:16,659 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-23 13:49:16,659 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-23 13:49:16,660 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-23 13:49:16,660 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-23 13:49:16,660 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-23 13:49:16,660 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-23 13:49:16,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:49:16,661 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-23 13:49:16,661 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-23 13:49:16,661 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-23 13:49:16,661 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-23 13:49:16,661 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-23 13:49:16,662 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-23 13:49:16,662 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-23 13:49:16,662 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-23 13:49:16,662 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-23 13:49:16,662 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-23 13:49:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-23 13:49:16,663 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-23 13:49:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-23 13:49:16,663 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-23 13:49:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-23 13:49:16,664 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-23 13:49:16,664 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-23 13:49:16,664 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-23 13:49:16,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:49:16,664 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-23 13:49:16,665 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-23 13:49:16,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:49:16,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:49:16,902 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:49:16,905 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:49:17,887 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:49:18,441 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:49:18,442 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 13:49:18,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:49:18 BoogieIcfgContainer [2022-11-23 13:49:18,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:49:18,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:49:18,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:49:18,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:49:18,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:49:15" (1/3) ... [2022-11-23 13:49:18,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43927f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:49:18, skipping insertion in model container [2022-11-23 13:49:18,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:16" (2/3) ... [2022-11-23 13:49:18,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43927f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:49:18, skipping insertion in model container [2022-11-23 13:49:18,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:49:18" (3/3) ... [2022-11-23 13:49:18,459 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product28.cil.c [2022-11-23 13:49:18,479 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:49:18,480 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 13:49:18,555 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:49:18,562 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;@627baf33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:49:18,562 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 13:49:18,570 INFO L276 IsEmpty]: Start isEmpty. Operand has 184 states, 108 states have (on average 1.3333333333333333) internal successors, (144), 112 states have internal predecessors, (144), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-23 13:49:18,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 13:49:18,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:49:18,588 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:49:18,589 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:49:18,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:49:18,598 INFO L85 PathProgramCache]: Analyzing trace with hash 2052915556, now seen corresponding path program 1 times [2022-11-23 13:49:18,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:49:18,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577548521] [2022-11-23 13:49:18,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:18,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:49:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:49:19,116 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 13:49:19,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:49:19,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577548521] [2022-11-23 13:49:19,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577548521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:49:19,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:49:19,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:49:19,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415780298] [2022-11-23 13:49:19,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:49:19,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 13:49:19,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:49:19,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 13:49:19,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 13:49:19,185 INFO L87 Difference]: Start difference. First operand has 184 states, 108 states have (on average 1.3333333333333333) internal successors, (144), 112 states have internal predecessors, (144), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 13:49:19,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:49:19,382 INFO L93 Difference]: Finished difference Result 285 states and 374 transitions. [2022-11-23 13:49:19,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 13:49:19,385 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 77 [2022-11-23 13:49:19,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:49:19,400 INFO L225 Difference]: With dead ends: 285 [2022-11-23 13:49:19,401 INFO L226 Difference]: Without dead ends: 181 [2022-11-23 13:49:19,407 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 13:49:19,410 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:49:19,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 214 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:49:19,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-23 13:49:19,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2022-11-23 13:49:19,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 106 states have (on average 1.3018867924528301) internal successors, (138), 109 states have internal predecessors, (138), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-23 13:49:19,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 241 transitions. [2022-11-23 13:49:19,470 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 241 transitions. Word has length 77 [2022-11-23 13:49:19,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:49:19,472 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 241 transitions. [2022-11-23 13:49:19,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 13:49:19,473 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 241 transitions. [2022-11-23 13:49:19,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-23 13:49:19,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:49:19,477 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:49:19,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:49:19,478 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:49:19,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:49:19,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1532515591, now seen corresponding path program 1 times [2022-11-23 13:49:19,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:49:19,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698892141] [2022-11-23 13:49:19,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:19,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:49:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:49:19,734 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 13:49:19,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:49:19,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698892141] [2022-11-23 13:49:19,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698892141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:49:19,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:49:19,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:49:19,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908348871] [2022-11-23 13:49:19,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:49:19,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:49:19,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:49:19,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:49:19,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:19,740 INFO L87 Difference]: Start difference. First operand 181 states and 241 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 13:49:19,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:49:19,922 INFO L93 Difference]: Finished difference Result 281 states and 362 transitions. [2022-11-23 13:49:19,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:49:19,923 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 78 [2022-11-23 13:49:19,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:49:19,925 INFO L225 Difference]: With dead ends: 281 [2022-11-23 13:49:19,925 INFO L226 Difference]: Without dead ends: 183 [2022-11-23 13:49:19,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:19,927 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 0 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:49:19,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 421 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:49:19,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-23 13:49:19,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2022-11-23 13:49:19,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 108 states have (on average 1.2962962962962963) internal successors, (140), 111 states have internal predecessors, (140), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-23 13:49:19,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 243 transitions. [2022-11-23 13:49:19,950 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 243 transitions. Word has length 78 [2022-11-23 13:49:19,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:49:19,956 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 243 transitions. [2022-11-23 13:49:19,956 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 13:49:19,957 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 243 transitions. [2022-11-23 13:49:19,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-23 13:49:19,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:49:19,965 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:49:19,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 13:49:19,966 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:49:19,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:49:19,966 INFO L85 PathProgramCache]: Analyzing trace with hash 458499150, now seen corresponding path program 1 times [2022-11-23 13:49:19,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:49:19,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574417170] [2022-11-23 13:49:19,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:19,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:49:20,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:49:20,176 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 13:49:20,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:49:20,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574417170] [2022-11-23 13:49:20,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574417170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:49:20,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:49:20,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:49:20,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916505575] [2022-11-23 13:49:20,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:49:20,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:49:20,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:49:20,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:49:20,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:20,179 INFO L87 Difference]: Start difference. First operand 183 states and 243 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 13:49:20,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:49:20,342 INFO L93 Difference]: Finished difference Result 396 states and 545 transitions. [2022-11-23 13:49:20,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:49:20,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 83 [2022-11-23 13:49:20,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:49:20,349 INFO L225 Difference]: With dead ends: 396 [2022-11-23 13:49:20,350 INFO L226 Difference]: Without dead ends: 231 [2022-11-23 13:49:20,352 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 13:49:20,356 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 57 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:49:20,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 439 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:49:20,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-23 13:49:20,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 226. [2022-11-23 13:49:20,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 140 states have (on average 1.3785714285714286) internal successors, (193), 143 states have internal predecessors, (193), 63 states have call successors, (63), 22 states have call predecessors, (63), 22 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-23 13:49:20,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 318 transitions. [2022-11-23 13:49:20,421 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 318 transitions. Word has length 83 [2022-11-23 13:49:20,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:49:20,424 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 318 transitions. [2022-11-23 13:49:20,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 13:49:20,424 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 318 transitions. [2022-11-23 13:49:20,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-23 13:49:20,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:49:20,429 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:49:20,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 13:49:20,429 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:49:20,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:49:20,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1962749151, now seen corresponding path program 1 times [2022-11-23 13:49:20,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:49:20,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781216552] [2022-11-23 13:49:20,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:20,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:49:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:49:20,684 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 13:49:20,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:49:20,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781216552] [2022-11-23 13:49:20,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781216552] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:49:20,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156897232] [2022-11-23 13:49:20,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:20,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:49:20,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:49:20,691 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:49:20,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 13:49:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:49:21,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 13:49:21,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:49:21,188 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 13:49:21,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:49:21,280 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 13:49:21,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156897232] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:49:21,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1747690921] [2022-11-23 13:49:21,304 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-23 13:49:21,304 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:49:21,308 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:49:21,314 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:49:21,315 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:49:53,126 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-23 13:49:53,470 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-23 13:49:53,876 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:50:34,549 WARN L233 SmtUtils]: Spent 7.78s on a formula simplification. DAG size of input: 490 DAG size of output: 371 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:50:45,468 WARN L233 SmtUtils]: Spent 5.92s on a formula simplification. DAG size of input: 512 DAG size of output: 313 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:50:58,522 WARN L233 SmtUtils]: Spent 12.72s on a formula simplification. DAG size of input: 585 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:51:11,584 WARN L233 SmtUtils]: Spent 12.72s on a formula simplification. DAG size of input: 587 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:51:18,103 WARN L233 SmtUtils]: Spent 6.29s on a formula simplification. DAG size of input: 330 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:51:24,607 WARN L233 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 328 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:51:31,307 WARN L233 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 549 DAG size of output: 368 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:51:31,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1747690921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:51:31,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:51:31,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-23 13:51:31,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534501174] [2022-11-23 13:51:31,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:51:31,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-23 13:51:31,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:51:31,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-23 13:51:31,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-11-23 13:51:31,317 INFO L87 Difference]: Start difference. First operand 226 states and 318 transitions. Second operand has 21 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2022-11-23 13:51:39,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:51:39,881 INFO L93 Difference]: Finished difference Result 531 states and 797 transitions. [2022-11-23 13:51:39,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-23 13:51:39,882 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 84 [2022-11-23 13:51:39,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:51:39,884 INFO L225 Difference]: With dead ends: 531 [2022-11-23 13:51:39,885 INFO L226 Difference]: Without dead ends: 323 [2022-11-23 13:51:39,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 97.4s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-11-23 13:51:39,887 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 141 mSDsluCounter, 3181 mSDsCounter, 0 mSdLazyCounter, 2005 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 3436 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:51:39,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 3436 Invalid, 2017 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 2005 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-11-23 13:51:39,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-11-23 13:51:40,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 249. [2022-11-23 13:51:40,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 162 states have (on average 1.3950617283950617) internal successors, (226), 165 states have internal predecessors, (226), 63 states have call successors, (63), 23 states have call predecessors, (63), 23 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-23 13:51:40,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 351 transitions. [2022-11-23 13:51:40,040 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 351 transitions. Word has length 84 [2022-11-23 13:51:40,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:51:40,042 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 351 transitions. [2022-11-23 13:51:40,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2022-11-23 13:51:40,043 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 351 transitions. [2022-11-23 13:51:40,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-23 13:51:40,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:51:40,052 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:51:40,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 13:51:40,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:51:40,268 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:51:40,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:51:40,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1634680546, now seen corresponding path program 1 times [2022-11-23 13:51:40,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:51:40,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157102703] [2022-11-23 13:51:40,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:40,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:51:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:40,375 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 13:51:40,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:51:40,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157102703] [2022-11-23 13:51:40,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157102703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:51:40,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:51:40,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:51:40,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066894831] [2022-11-23 13:51:40,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:51:40,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:51:40,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:51:40,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:51:40,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:51:40,379 INFO L87 Difference]: Start difference. First operand 249 states and 351 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 13:51:40,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:51:40,654 INFO L93 Difference]: Finished difference Result 591 states and 866 transitions. [2022-11-23 13:51:40,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:51:40,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 89 [2022-11-23 13:51:40,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:51:40,658 INFO L225 Difference]: With dead ends: 591 [2022-11-23 13:51:40,658 INFO L226 Difference]: Without dead ends: 366 [2022-11-23 13:51:40,659 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 13:51:40,660 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 55 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:51:40,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 434 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:51:40,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-11-23 13:51:40,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 361. [2022-11-23 13:51:40,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 249 states have (on average 1.4538152610441768) internal successors, (362), 252 states have internal predecessors, (362), 88 states have call successors, (88), 23 states have call predecessors, (88), 23 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2022-11-23 13:51:40,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 537 transitions. [2022-11-23 13:51:40,843 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 537 transitions. Word has length 89 [2022-11-23 13:51:40,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:51:40,843 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 537 transitions. [2022-11-23 13:51:40,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 13:51:40,844 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 537 transitions. [2022-11-23 13:51:40,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-23 13:51:40,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:51:40,847 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:51:40,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 13:51:40,847 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:51:40,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:51:40,848 INFO L85 PathProgramCache]: Analyzing trace with hash -641083086, now seen corresponding path program 1 times [2022-11-23 13:51:40,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:51:40,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284408262] [2022-11-23 13:51:40,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:40,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:51:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:40,987 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 13:51:40,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:51:40,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284408262] [2022-11-23 13:51:40,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284408262] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:51:40,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911938797] [2022-11-23 13:51:40,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:40,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:51:40,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:51:40,990 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:51:40,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 13:51:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:41,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 13:51:41,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:51:41,351 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 13:51:41,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:51:41,425 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 13:51:41,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911938797] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:51:41,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1699492622] [2022-11-23 13:51:41,429 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2022-11-23 13:51:41,429 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:51:41,430 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:51:41,430 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:51:41,431 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:52:24,731 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-23 13:52:25,033 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-23 13:52:25,341 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:53:07,834 WARN L233 SmtUtils]: Spent 7.78s on a formula simplification. DAG size of input: 490 DAG size of output: 371 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:53:18,872 WARN L233 SmtUtils]: Spent 5.99s on a formula simplification. DAG size of input: 512 DAG size of output: 313 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:53:32,064 WARN L233 SmtUtils]: Spent 12.85s on a formula simplification. DAG size of input: 593 DAG size of output: 335 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:53:52,851 WARN L233 SmtUtils]: Spent 20.44s on a formula simplification. DAG size of input: 595 DAG size of output: 459 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:53:59,418 WARN L233 SmtUtils]: Spent 6.33s on a formula simplification. DAG size of input: 334 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:54:05,909 WARN L233 SmtUtils]: Spent 6.25s on a formula simplification. DAG size of input: 332 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:54:15,876 WARN L233 SmtUtils]: Spent 9.62s on a formula simplification. DAG size of input: 574 DAG size of output: 402 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:54:25,770 WARN L233 SmtUtils]: Spent 9.55s on a formula simplification. DAG size of input: 570 DAG size of output: 398 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:54:29,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1699492622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:54:29,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:54:29,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-23 13:54:29,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211146495] [2022-11-23 13:54:29,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:54:29,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-23 13:54:29,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:54:29,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-23 13:54:29,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2022-11-23 13:54:29,901 INFO L87 Difference]: Start difference. First operand 361 states and 537 transitions. Second operand has 25 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2022-11-23 13:54:37,447 WARN L233 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 394 DAG size of output: 340 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:54:52,375 WARN L233 SmtUtils]: Spent 14.70s on a formula simplification. DAG size of input: 543 DAG size of output: 409 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:54:59,727 WARN L233 SmtUtils]: Spent 7.10s on a formula simplification. DAG size of input: 391 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:55:07,012 WARN L233 SmtUtils]: Spent 7.07s on a formula simplification. DAG size of input: 389 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:55:23,104 WARN L233 SmtUtils]: Spent 5.62s on a formula simplification. DAG size of input: 389 DAG size of output: 342 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:55:29,082 WARN L233 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 391 DAG size of output: 344 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:55:37,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:55:37,322 INFO L93 Difference]: Finished difference Result 816 states and 1274 transitions. [2022-11-23 13:55:37,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-23 13:55:37,323 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) Word has length 90 [2022-11-23 13:55:37,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:55:37,337 INFO L225 Difference]: With dead ends: 816 [2022-11-23 13:55:37,337 INFO L226 Difference]: Without dead ends: 518 [2022-11-23 13:55:37,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 181.4s TimeCoverageRelationStatistics Valid=182, Invalid=1224, Unknown=0, NotChecked=0, Total=1406 [2022-11-23 13:55:37,343 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 297 mSDsluCounter, 3038 mSDsCounter, 0 mSdLazyCounter, 2159 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 3258 SdHoareTripleChecker+Invalid, 2183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:55:37,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 3258 Invalid, 2183 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 2159 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-11-23 13:55:37,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-11-23 13:55:37,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 423. [2022-11-23 13:55:37,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 307 states have (on average 1.501628664495114) internal successors, (461), 312 states have internal predecessors, (461), 91 states have call successors, (91), 24 states have call predecessors, (91), 24 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2022-11-23 13:55:37,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 642 transitions. [2022-11-23 13:55:37,625 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 642 transitions. Word has length 90 [2022-11-23 13:55:37,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:55:37,626 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 642 transitions. [2022-11-23 13:55:37,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2022-11-23 13:55:37,626 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 642 transitions. [2022-11-23 13:55:37,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-23 13:55:37,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:55:37,629 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:55:37,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-23 13:55:37,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:55:37,837 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:55:37,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:55:37,837 INFO L85 PathProgramCache]: Analyzing trace with hash 824677499, now seen corresponding path program 1 times [2022-11-23 13:55:37,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:55:37,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475358969] [2022-11-23 13:55:37,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:37,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:55:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:38,035 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 13:55:38,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:55:38,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475358969] [2022-11-23 13:55:38,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475358969] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:55:38,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669190671] [2022-11-23 13:55:38,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:38,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:55:38,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:55:38,039 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:55:38,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 13:55:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:38,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 1194 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 13:55:38,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:55:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 13:55:38,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:55:38,512 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 13:55:38,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669190671] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:55:38,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1283021258] [2022-11-23 13:55:38,517 INFO L159 IcfgInterpreter]: Started Sifa with 78 locations of interest [2022-11-23 13:55:38,517 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:55:38,517 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:55:38,518 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:55:38,518 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:56:20,872 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 447 for LOIs [2022-11-23 13:56:21,181 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 238 for LOIs [2022-11-23 13:56:21,245 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 247 for LOIs [2022-11-23 13:56:21,312 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 453 for LOIs [2022-11-23 13:56:21,670 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-23 13:56:21,965 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:57:03,624 WARN L233 SmtUtils]: Spent 7.79s on a formula simplification. DAG size of input: 490 DAG size of output: 371 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:57:14,558 WARN L233 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 512 DAG size of output: 313 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:57:34,651 WARN L233 SmtUtils]: Spent 19.75s on a formula simplification. DAG size of input: 636 DAG size of output: 514 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:57:45,689 WARN L233 SmtUtils]: Spent 10.65s on a formula simplification. DAG size of input: 638 DAG size of output: 408 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:58:06,517 WARN L233 SmtUtils]: Spent 10.78s on a formula simplification. DAG size of input: 562 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:58:14,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1283021258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:58:14,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:58:14,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-11-23 13:58:14,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645634178] [2022-11-23 13:58:14,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:58:14,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-23 13:58:14,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:58:14,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-23 13:58:14,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2022-11-23 13:58:14,961 INFO L87 Difference]: Start difference. First operand 423 states and 642 transitions. Second operand has 30 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) [2022-11-23 13:58:26,280 WARN L233 SmtUtils]: Spent 9.27s on a formula simplification. DAG size of input: 598 DAG size of output: 422 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:58:43,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:58:43,526 INFO L93 Difference]: Finished difference Result 880 states and 1377 transitions. [2022-11-23 13:58:43,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-23 13:58:43,527 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) Word has length 93 [2022-11-23 13:58:43,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:58:43,531 INFO L225 Difference]: With dead ends: 880 [2022-11-23 13:58:43,531 INFO L226 Difference]: Without dead ends: 582 [2022-11-23 13:58:43,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 126.3s TimeCoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2022-11-23 13:58:43,533 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 146 mSDsluCounter, 3581 mSDsCounter, 0 mSdLazyCounter, 3369 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 3797 SdHoareTripleChecker+Invalid, 3384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2022-11-23 13:58:43,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 3797 Invalid, 3384 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 3369 Invalid, 0 Unknown, 0 Unchecked, 14.5s Time] [2022-11-23 13:58:43,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2022-11-23 13:58:43,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 508. [2022-11-23 13:58:43,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 384 states have (on average 1.5260416666666667) internal successors, (586), 391 states have internal predecessors, (586), 96 states have call successors, (96), 27 states have call predecessors, (96), 27 states have return successors, (95), 91 states have call predecessors, (95), 95 states have call successors, (95) [2022-11-23 13:58:43,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 777 transitions. [2022-11-23 13:58:43,908 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 777 transitions. Word has length 93 [2022-11-23 13:58:43,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:58:43,909 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 777 transitions. [2022-11-23 13:58:43,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) [2022-11-23 13:58:43,909 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 777 transitions. [2022-11-23 13:58:43,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-23 13:58:43,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:58:43,912 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:58:43,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 13:58:44,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:58:44,121 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:58:44,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:58:44,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1995677986, now seen corresponding path program 1 times [2022-11-23 13:58:44,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:58:44,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477676242] [2022-11-23 13:58:44,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:58:44,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:58:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:58:44,255 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 13:58:44,255 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:58:44,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477676242] [2022-11-23 13:58:44,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477676242] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:58:44,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799995423] [2022-11-23 13:58:44,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:58:44,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:58:44,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:58:44,257 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:58:44,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 13:58:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:58:44,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 13:58:44,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:58:44,617 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 13:58:44,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:58:44,690 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 13:58:44,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799995423] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:58:44,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2012386231] [2022-11-23 13:58:44,698 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2022-11-23 13:58:44,699 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:58:44,700 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:58:44,700 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:58:44,700 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:59:21,740 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-23 13:59:22,036 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-23 13:59:22,351 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:00:02,551 WARN L233 SmtUtils]: Spent 7.71s on a formula simplification. DAG size of input: 490 DAG size of output: 371 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:00:13,421 WARN L233 SmtUtils]: Spent 5.94s on a formula simplification. DAG size of input: 512 DAG size of output: 313 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:00:26,623 WARN L233 SmtUtils]: Spent 12.90s on a formula simplification. DAG size of input: 601 DAG size of output: 338 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:00:39,945 WARN L233 SmtUtils]: Spent 12.97s on a formula simplification. DAG size of input: 603 DAG size of output: 338 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:00:46,570 WARN L233 SmtUtils]: Spent 6.41s on a formula simplification. DAG size of input: 338 DAG size of output: 336 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:00:53,207 WARN L233 SmtUtils]: Spent 6.39s on a formula simplification. DAG size of input: 336 DAG size of output: 334 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:01:00,409 WARN L233 SmtUtils]: Spent 6.86s on a formula simplification. DAG size of input: 582 DAG size of output: 335 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:01:07,783 WARN L233 SmtUtils]: Spent 6.97s on a formula simplification. DAG size of input: 578 DAG size of output: 331 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:01:18,265 WARN L233 SmtUtils]: Spent 10.09s on a formula simplification. DAG size of input: 580 DAG size of output: 412 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:01:28,553 WARN L233 SmtUtils]: Spent 9.88s on a formula simplification. DAG size of input: 576 DAG size of output: 408 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:01:38,794 WARN L233 SmtUtils]: Spent 9.89s on a formula simplification. DAG size of input: 578 DAG size of output: 415 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:01:49,014 WARN L233 SmtUtils]: Spent 9.79s on a formula simplification. DAG size of input: 574 DAG size of output: 411 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:01:56,088 WARN L233 SmtUtils]: Spent 6.66s on a formula simplification. DAG size of input: 576 DAG size of output: 335 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:02:03,192 WARN L233 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 572 DAG size of output: 331 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:02:04,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2012386231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:02:04,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:02:04,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [4, 4, 4] total 34 [2022-11-23 14:02:04,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114500164] [2022-11-23 14:02:04,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:02:04,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-23 14:02:04,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:02:04,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-23 14:02:04,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2022-11-23 14:02:04,662 INFO L87 Difference]: Start difference. First operand 508 states and 777 transitions. Second operand has 29 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 states have internal predecessors, (50), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2022-11-23 14:02:13,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:02:13,579 INFO L93 Difference]: Finished difference Result 949 states and 1485 transitions. [2022-11-23 14:02:13,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-23 14:02:13,580 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 states have internal predecessors, (50), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 92 [2022-11-23 14:02:13,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:02:13,585 INFO L225 Difference]: With dead ends: 949 [2022-11-23 14:02:13,586 INFO L226 Difference]: Without dead ends: 608 [2022-11-23 14:02:13,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 162.3s TimeCoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2022-11-23 14:02:13,589 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 255 mSDsluCounter, 2619 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 2836 SdHoareTripleChecker+Invalid, 1895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:02:13,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 2836 Invalid, 1895 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 1875 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-11-23 14:02:13,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-11-23 14:02:14,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 527. [2022-11-23 14:02:14,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 403 states have (on average 1.5235732009925558) internal successors, (614), 410 states have internal predecessors, (614), 96 states have call successors, (96), 27 states have call predecessors, (96), 27 states have return successors, (95), 91 states have call predecessors, (95), 95 states have call successors, (95) [2022-11-23 14:02:14,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 805 transitions. [2022-11-23 14:02:14,029 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 805 transitions. Word has length 92 [2022-11-23 14:02:14,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:02:14,030 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 805 transitions. [2022-11-23 14:02:14,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 states have internal predecessors, (50), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2022-11-23 14:02:14,030 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 805 transitions. [2022-11-23 14:02:14,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-23 14:02:14,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:02:14,033 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:02:14,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 14:02:14,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:02:14,240 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:02:14,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:02:14,240 INFO L85 PathProgramCache]: Analyzing trace with hash -2043473338, now seen corresponding path program 1 times [2022-11-23 14:02:14,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:02:14,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339243276] [2022-11-23 14:02:14,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:02:14,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:02:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:02:14,450 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 14:02:14,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:02:14,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339243276] [2022-11-23 14:02:14,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339243276] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:02:14,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652338260] [2022-11-23 14:02:14,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:02:14,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:02:14,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:02:14,452 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:02:14,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef98fbc-0fdc-4ca8-a4aa-84dbcad9469e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 14:02:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:02:14,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 1102 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:02:14,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:02:14,822 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 14:02:14,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:02:14,916 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 14:02:14,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652338260] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:02:14,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [577469997] [2022-11-23 14:02:14,921 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2022-11-23 14:02:14,921 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:02:14,922 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:02:14,922 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:02:14,922 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs