./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 619b5b07f7bee6d460265c38ff6f46d0f3c88b87f6fc28a24021d9529c74e42f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:38:33,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:38:33,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:38:33,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:38:33,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:38:33,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:38:33,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:38:33,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:38:33,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:38:33,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:38:33,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:38:33,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:38:33,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:38:33,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:38:33,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:38:33,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:38:33,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:38:33,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:38:33,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:38:33,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:38:33,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:38:33,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:38:33,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:38:33,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:38:33,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:38:33,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:38:33,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:38:33,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:38:33,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:38:33,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:38:33,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:38:33,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:38:33,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:38:33,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:38:33,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:38:33,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:38:33,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:38:33,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:38:33,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:38:33,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:38:33,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:38:33,535 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:38:33,580 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:38:33,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:38:33,581 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:38:33,581 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:38:33,582 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:38:33,582 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:38:33,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:38:33,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:38:33,590 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:38:33,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:38:33,592 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:38:33,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:38:33,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:38:33,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:38:33,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:38:33,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:38:33,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:38:33,594 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:38:33,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:38:33,594 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:38:33,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:38:33,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:38:33,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:38:33,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:38:33,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:38:33,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:38:33,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:38:33,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:38:33,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:38:33,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:38:33,599 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:38:33,599 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:38:33,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:38:33,600 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_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 619b5b07f7bee6d460265c38ff6f46d0f3c88b87f6fc28a24021d9529c74e42f [2022-11-18 20:38:33,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:38:33,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:38:33,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:38:33,977 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:38:33,978 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:38:33,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/product-lines/email_spec4_product28.cil.c [2022-11-18 20:38:34,075 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/data/cc2da69fb/cb663f2cd84c4a3aa22e508d5267c1ac/FLAGd63d39740 [2022-11-18 20:38:34,816 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:38:34,817 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/sv-benchmarks/c/product-lines/email_spec4_product28.cil.c [2022-11-18 20:38:34,846 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/data/cc2da69fb/cb663f2cd84c4a3aa22e508d5267c1ac/FLAGd63d39740 [2022-11-18 20:38:35,020 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/data/cc2da69fb/cb663f2cd84c4a3aa22e508d5267c1ac [2022-11-18 20:38:35,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:38:35,026 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:38:35,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:38:35,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:38:35,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:38:35,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:38:35" (1/1) ... [2022-11-18 20:38:35,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e60e109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:35, skipping insertion in model container [2022-11-18 20:38:35,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:38:35" (1/1) ... [2022-11-18 20:38:35,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:38:35,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:38:35,619 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/sv-benchmarks/c/product-lines/email_spec4_product28.cil.c[8467,8480] [2022-11-18 20:38:36,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:38:36,034 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:38:36,081 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/sv-benchmarks/c/product-lines/email_spec4_product28.cil.c[8467,8480] [2022-11-18 20:38:36,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:38:36,217 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:38:36,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:36 WrapperNode [2022-11-18 20:38:36,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:38:36,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:38:36,220 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:38:36,220 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:38:36,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:36" (1/1) ... [2022-11-18 20:38:36,300 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:36" (1/1) ... [2022-11-18 20:38:36,387 INFO L138 Inliner]: procedures = 128, calls = 208, calls flagged for inlining = 55, calls inlined = 45, statements flattened = 854 [2022-11-18 20:38:36,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:38:36,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:38:36,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:38:36,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:38:36,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:36" (1/1) ... [2022-11-18 20:38:36,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:36" (1/1) ... [2022-11-18 20:38:36,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:36" (1/1) ... [2022-11-18 20:38:36,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:36" (1/1) ... [2022-11-18 20:38:36,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:36" (1/1) ... [2022-11-18 20:38:36,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:36" (1/1) ... [2022-11-18 20:38:36,440 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:36" (1/1) ... [2022-11-18 20:38:36,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:36" (1/1) ... [2022-11-18 20:38:36,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:38:36,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:38:36,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:38:36,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:38:36,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:36" (1/1) ... [2022-11-18 20:38:36,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:38:36,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:38:36,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:38:36,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:38:36,554 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-18 20:38:36,554 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-18 20:38:36,555 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-18 20:38:36,555 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-18 20:38:36,555 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-18 20:38:36,555 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-18 20:38:36,555 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-18 20:38:36,556 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-18 20:38:36,556 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-18 20:38:36,556 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-18 20:38:36,556 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-18 20:38:36,556 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-18 20:38:36,557 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-18 20:38:36,557 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-18 20:38:36,557 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-18 20:38:36,557 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-18 20:38:36,557 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-18 20:38:36,558 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-18 20:38:36,558 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-18 20:38:36,558 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-18 20:38:36,558 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-18 20:38:36,559 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-18 20:38:36,559 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-18 20:38:36,559 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-18 20:38:36,559 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-18 20:38:36,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:38:36,560 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-18 20:38:36,560 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-18 20:38:36,560 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-18 20:38:36,560 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-18 20:38:36,560 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-18 20:38:36,561 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-18 20:38:36,561 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-18 20:38:36,561 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-18 20:38:36,561 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-18 20:38:36,561 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-18 20:38:36,562 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-18 20:38:36,562 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-18 20:38:36,562 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-18 20:38:36,562 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-18 20:38:36,562 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-18 20:38:36,563 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-18 20:38:36,563 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-18 20:38:36,563 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-18 20:38:36,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:38:36,564 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-18 20:38:36,564 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-18 20:38:36,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:38:36,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:38:36,822 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:38:36,825 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:38:38,087 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:38:38,112 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:38:38,113 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 20:38:38,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:38:38 BoogieIcfgContainer [2022-11-18 20:38:38,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:38:38,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:38:38,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:38:38,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:38:38,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:38:35" (1/3) ... [2022-11-18 20:38:38,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3157004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:38:38, skipping insertion in model container [2022-11-18 20:38:38,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:36" (2/3) ... [2022-11-18 20:38:38,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3157004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:38:38, skipping insertion in model container [2022-11-18 20:38:38,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:38:38" (3/3) ... [2022-11-18 20:38:38,133 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product28.cil.c [2022-11-18 20:38:38,156 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:38:38,157 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:38:38,276 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:38:38,294 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=PETRI_NET, 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;@2d5f5afd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:38:38,295 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:38:38,303 INFO L276 IsEmpty]: Start isEmpty. Operand has 327 states, 253 states have (on average 1.5217391304347827) internal successors, (385), 257 states have internal predecessors, (385), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-18 20:38:38,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-18 20:38:38,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:38,344 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1] [2022-11-18 20:38:38,345 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:38:38,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:38,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1302958000, now seen corresponding path program 1 times [2022-11-18 20:38:38,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:38,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557639916] [2022-11-18 20:38:38,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:38,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:39,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:38:39,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:39,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:38:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:39,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:38:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:39,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 20:38:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:39,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 20:38:39,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:39,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 20:38:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:39,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:38:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:39,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 20:38:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:39,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:38:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:39,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:38:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:39,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 20:38:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:39,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 20:38:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:39,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 20:38:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:39,489 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-18 20:38:39,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:39,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557639916] [2022-11-18 20:38:39,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557639916] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:38:39,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050337656] [2022-11-18 20:38:39,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:39,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:39,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:38:39,514 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:38:39,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:38:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:39,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-18 20:38:39,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:38:40,012 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-18 20:38:40,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:38:40,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050337656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:40,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:38:40,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2022-11-18 20:38:40,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223604519] [2022-11-18 20:38:40,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:40,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:38:40,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:40,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:38:40,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:38:40,076 INFO L87 Difference]: Start difference. First operand has 327 states, 253 states have (on average 1.5217391304347827) internal successors, (385), 257 states have internal predecessors, (385), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:38:40,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:38:40,198 INFO L93 Difference]: Finished difference Result 505 states and 732 transitions. [2022-11-18 20:38:40,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:38:40,201 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 104 [2022-11-18 20:38:40,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:38:40,228 INFO L225 Difference]: With dead ends: 505 [2022-11-18 20:38:40,230 INFO L226 Difference]: Without dead ends: 320 [2022-11-18 20:38:40,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:38:40,245 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:38:40,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:38:40,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-11-18 20:38:40,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2022-11-18 20:38:40,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 247 states have (on average 1.51417004048583) internal successors, (374), 250 states have internal predecessors, (374), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-18 20:38:40,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 473 transitions. [2022-11-18 20:38:40,387 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 473 transitions. Word has length 104 [2022-11-18 20:38:40,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:38:40,390 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 473 transitions. [2022-11-18 20:38:40,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:38:40,392 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 473 transitions. [2022-11-18 20:38:40,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-18 20:38:40,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:40,406 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1] [2022-11-18 20:38:40,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:38:40,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:40,616 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:38:40,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:40,617 INFO L85 PathProgramCache]: Analyzing trace with hash 598678511, now seen corresponding path program 1 times [2022-11-18 20:38:40,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:40,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819168694] [2022-11-18 20:38:40,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:40,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:40,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:38:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:41,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:38:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:41,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:38:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:41,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 20:38:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:41,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 20:38:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:41,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 20:38:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:41,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 20:38:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:41,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:38:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:41,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:38:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:41,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:38:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:41,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 20:38:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:41,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-18 20:38:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:41,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 20:38:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:41,154 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-18 20:38:41,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:41,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819168694] [2022-11-18 20:38:41,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819168694] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:38:41,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918454764] [2022-11-18 20:38:41,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:41,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:41,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:38:41,163 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:38:41,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:38:41,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:41,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:38:41,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:38:41,627 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-18 20:38:41,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:38:41,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918454764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:41,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:38:41,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-18 20:38:41,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88968301] [2022-11-18 20:38:41,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:41,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:38:41,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:41,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:38:41,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:38:41,635 INFO L87 Difference]: Start difference. First operand 320 states and 473 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:38:41,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:38:41,716 INFO L93 Difference]: Finished difference Result 495 states and 713 transitions. [2022-11-18 20:38:41,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:38:41,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 105 [2022-11-18 20:38:41,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:38:41,721 INFO L225 Difference]: With dead ends: 495 [2022-11-18 20:38:41,721 INFO L226 Difference]: Without dead ends: 323 [2022-11-18 20:38:41,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:38:41,726 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 1 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:38:41,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 940 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:38:41,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-11-18 20:38:41,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 322. [2022-11-18 20:38:41,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 249 states have (on average 1.5100401606425702) internal successors, (376), 252 states have internal predecessors, (376), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-18 20:38:41,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 475 transitions. [2022-11-18 20:38:41,804 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 475 transitions. Word has length 105 [2022-11-18 20:38:41,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:38:41,807 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 475 transitions. [2022-11-18 20:38:41,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:38:41,808 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 475 transitions. [2022-11-18 20:38:41,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-18 20:38:41,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:41,813 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:41,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:38:42,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-18 20:38:42,021 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:38:42,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:42,024 INFO L85 PathProgramCache]: Analyzing trace with hash 120398534, now seen corresponding path program 1 times [2022-11-18 20:38:42,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:42,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400326242] [2022-11-18 20:38:42,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:42,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:42,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:42,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:38:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:42,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:38:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:42,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:38:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:42,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 20:38:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:42,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 20:38:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:42,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 20:38:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:42,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:38:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:42,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:38:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:42,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:38:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:42,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:38:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:42,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-18 20:38:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:42,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 20:38:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:42,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 20:38:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:42,426 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 20:38:42,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:42,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400326242] [2022-11-18 20:38:42,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400326242] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:38:42,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730968955] [2022-11-18 20:38:42,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:42,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:42,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:38:42,429 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:38:42,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:38:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:42,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 1031 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:38:42,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:38:42,824 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-18 20:38:42,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:38:42,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730968955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:42,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:38:42,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-18 20:38:42,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221986262] [2022-11-18 20:38:42,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:42,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:38:42,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:42,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:38:42,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:38:42,827 INFO L87 Difference]: Start difference. First operand 322 states and 475 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:38:42,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:38:42,864 INFO L93 Difference]: Finished difference Result 669 states and 1001 transitions. [2022-11-18 20:38:42,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:38:42,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2022-11-18 20:38:42,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:38:42,869 INFO L225 Difference]: With dead ends: 669 [2022-11-18 20:38:42,869 INFO L226 Difference]: Without dead ends: 374 [2022-11-18 20:38:42,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:38:42,872 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 99 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:38:42,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 919 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:38:42,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-11-18 20:38:42,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 366. [2022-11-18 20:38:42,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 282 states have (on average 1.524822695035461) internal successors, (430), 285 states have internal predecessors, (430), 61 states have call successors, (61), 22 states have call predecessors, (61), 22 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-18 20:38:42,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 551 transitions. [2022-11-18 20:38:42,898 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 551 transitions. Word has length 111 [2022-11-18 20:38:42,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:38:42,899 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 551 transitions. [2022-11-18 20:38:42,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:38:42,900 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 551 transitions. [2022-11-18 20:38:42,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-18 20:38:42,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:42,903 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:42,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:38:43,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:43,118 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:38:43,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:43,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1427798971, now seen corresponding path program 1 times [2022-11-18 20:38:43,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:43,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080407059] [2022-11-18 20:38:43,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:43,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:43,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:38:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:43,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:38:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:43,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:38:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:43,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 20:38:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:43,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 20:38:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:43,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 20:38:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:43,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-18 20:38:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:43,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:38:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:43,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:38:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:43,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 20:38:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:43,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 20:38:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:43,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 20:38:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:43,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-18 20:38:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:43,464 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 20:38:43,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:43,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080407059] [2022-11-18 20:38:43,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080407059] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:38:43,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467233299] [2022-11-18 20:38:43,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:43,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:43,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:38:43,467 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:38:43,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:38:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:43,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:38:43,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:38:43,955 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 20:38:43,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:38:43,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467233299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:43,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:38:43,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-18 20:38:43,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101928125] [2022-11-18 20:38:43,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:43,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:38:43,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:43,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:38:43,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:38:43,959 INFO L87 Difference]: Start difference. First operand 366 states and 551 transitions. Second operand has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-18 20:38:44,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:38:44,061 INFO L93 Difference]: Finished difference Result 723 states and 1092 transitions. [2022-11-18 20:38:44,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:38:44,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2022-11-18 20:38:44,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:38:44,066 INFO L225 Difference]: With dead ends: 723 [2022-11-18 20:38:44,066 INFO L226 Difference]: Without dead ends: 368 [2022-11-18 20:38:44,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:38:44,069 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 117 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:38:44,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1719 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:38:44,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-11-18 20:38:44,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2022-11-18 20:38:44,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 283 states have (on average 1.5229681978798586) internal successors, (431), 287 states have internal predecessors, (431), 61 states have call successors, (61), 22 states have call predecessors, (61), 23 states have return successors, (62), 60 states have call predecessors, (62), 60 states have call successors, (62) [2022-11-18 20:38:44,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 554 transitions. [2022-11-18 20:38:44,094 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 554 transitions. Word has length 112 [2022-11-18 20:38:44,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:38:44,095 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 554 transitions. [2022-11-18 20:38:44,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-18 20:38:44,095 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 554 transitions. [2022-11-18 20:38:44,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-18 20:38:44,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:44,099 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:44,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-18 20:38:44,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:44,307 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:38:44,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:44,308 INFO L85 PathProgramCache]: Analyzing trace with hash -221648282, now seen corresponding path program 1 times [2022-11-18 20:38:44,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:44,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647911461] [2022-11-18 20:38:44,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:44,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:44,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:38:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:44,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:38:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:44,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:38:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:44,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:38:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:44,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-18 20:38:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:44,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:38:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:44,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:38:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:44,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:38:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:44,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 20:38:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:44,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-18 20:38:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:44,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:38:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:44,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 20:38:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:44,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:38:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:44,661 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 20:38:44,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:44,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647911461] [2022-11-18 20:38:44,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647911461] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:38:44,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409076404] [2022-11-18 20:38:44,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:44,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:44,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:38:44,664 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:38:44,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:38:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:45,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:38:45,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:38:45,102 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 20:38:45,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:38:45,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409076404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:45,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:38:45,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-11-18 20:38:45,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837795392] [2022-11-18 20:38:45,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:45,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:38:45,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:45,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:38:45,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:38:45,106 INFO L87 Difference]: Start difference. First operand 368 states and 554 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-18 20:38:45,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:38:45,209 INFO L93 Difference]: Finished difference Result 725 states and 1097 transitions. [2022-11-18 20:38:45,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:38:45,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2022-11-18 20:38:45,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:38:45,214 INFO L225 Difference]: With dead ends: 725 [2022-11-18 20:38:45,215 INFO L226 Difference]: Without dead ends: 370 [2022-11-18 20:38:45,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:38:45,218 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 116 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:38:45,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1708 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:38:45,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-11-18 20:38:45,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2022-11-18 20:38:45,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 284 states have (on average 1.5211267605633803) internal successors, (432), 289 states have internal predecessors, (432), 61 states have call successors, (61), 22 states have call predecessors, (61), 24 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2022-11-18 20:38:45,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 560 transitions. [2022-11-18 20:38:45,251 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 560 transitions. Word has length 113 [2022-11-18 20:38:45,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:38:45,254 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 560 transitions. [2022-11-18 20:38:45,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-18 20:38:45,254 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 560 transitions. [2022-11-18 20:38:45,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-18 20:38:45,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:45,258 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:45,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:38:45,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:45,467 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:38:45,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:45,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1645047527, now seen corresponding path program 1 times [2022-11-18 20:38:45,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:45,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510031204] [2022-11-18 20:38:45,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:45,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:45,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:38:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:45,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:38:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:45,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:38:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:45,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:38:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:45,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:38:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:45,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:38:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:45,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:38:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:45,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-18 20:38:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:45,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 20:38:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:45,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-18 20:38:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:45,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-18 20:38:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:45,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-18 20:38:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:45,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-18 20:38:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:45,774 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 20:38:45,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:45,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510031204] [2022-11-18 20:38:45,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510031204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:45,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:45,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:38:45,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723522301] [2022-11-18 20:38:45,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:45,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:38:45,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:45,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:38:45,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:38:45,778 INFO L87 Difference]: Start difference. First operand 370 states and 560 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-18 20:38:48,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:38:48,152 INFO L93 Difference]: Finished difference Result 788 states and 1199 transitions. [2022-11-18 20:38:48,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:38:48,153 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2022-11-18 20:38:48,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:38:48,157 INFO L225 Difference]: With dead ends: 788 [2022-11-18 20:38:48,157 INFO L226 Difference]: Without dead ends: 441 [2022-11-18 20:38:48,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:38:48,160 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 880 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1899 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 2162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 1899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:38:48,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 814 Invalid, 2162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 1899 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-18 20:38:48,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-11-18 20:38:48,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 370. [2022-11-18 20:38:48,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 284 states have (on average 1.5211267605633803) internal successors, (432), 289 states have internal predecessors, (432), 61 states have call successors, (61), 22 states have call predecessors, (61), 24 states have return successors, (66), 60 states have call predecessors, (66), 60 states have call successors, (66) [2022-11-18 20:38:48,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 559 transitions. [2022-11-18 20:38:48,217 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 559 transitions. Word has length 114 [2022-11-18 20:38:48,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:38:48,217 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 559 transitions. [2022-11-18 20:38:48,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-18 20:38:48,218 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 559 transitions. [2022-11-18 20:38:48,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-18 20:38:48,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:48,221 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:48,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:38:48,222 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:38:48,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:48,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1269941286, now seen corresponding path program 2 times [2022-11-18 20:38:48,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:48,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136808654] [2022-11-18 20:38:48,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:48,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:48,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:38:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:48,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:38:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:48,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:38:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:48,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:38:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:48,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:38:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:48,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:38:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:48,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 20:38:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:48,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-18 20:38:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:48,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:38:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:48,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 20:38:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:48,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 20:38:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:48,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-18 20:38:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:48,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-18 20:38:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:48,539 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 20:38:48,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:48,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136808654] [2022-11-18 20:38:48,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136808654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:48,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:48,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:38:48,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115761196] [2022-11-18 20:38:48,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:48,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:38:48,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:48,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:38:48,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:38:48,543 INFO L87 Difference]: Start difference. First operand 370 states and 559 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-18 20:38:50,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:38:50,751 INFO L93 Difference]: Finished difference Result 790 states and 1202 transitions. [2022-11-18 20:38:50,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:38:50,752 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2022-11-18 20:38:50,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:38:50,756 INFO L225 Difference]: With dead ends: 790 [2022-11-18 20:38:50,756 INFO L226 Difference]: Without dead ends: 443 [2022-11-18 20:38:50,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:38:50,759 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 876 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1913 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 2174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 1913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:38:50,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 814 Invalid, 2174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 1913 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-18 20:38:50,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-11-18 20:38:50,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 372. [2022-11-18 20:38:50,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 285 states have (on average 1.5192982456140351) internal successors, (433), 291 states have internal predecessors, (433), 61 states have call successors, (61), 22 states have call predecessors, (61), 25 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2022-11-18 20:38:50,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 562 transitions. [2022-11-18 20:38:50,812 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 562 transitions. Word has length 115 [2022-11-18 20:38:50,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:38:50,812 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 562 transitions. [2022-11-18 20:38:50,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-18 20:38:50,813 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 562 transitions. [2022-11-18 20:38:50,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-18 20:38:50,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:50,816 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:50,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:38:50,817 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:38:50,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:50,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1415974892, now seen corresponding path program 1 times [2022-11-18 20:38:50,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:50,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068466577] [2022-11-18 20:38:50,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:50,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:51,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:38:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:51,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:38:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:51,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:38:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:51,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:38:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:51,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:38:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:51,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:38:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:51,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:38:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:51,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 20:38:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:51,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:38:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:51,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 20:38:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:51,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-18 20:38:51,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:51,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-18 20:38:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:51,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-18 20:38:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:51,245 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 20:38:51,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:51,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068466577] [2022-11-18 20:38:51,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068466577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:51,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:51,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:38:51,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028443956] [2022-11-18 20:38:51,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:51,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:38:51,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:51,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:38:51,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:38:51,248 INFO L87 Difference]: Start difference. First operand 372 states and 562 transitions. Second operand has 11 states, 10 states have (on average 7.7) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-18 20:38:54,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:38:54,345 INFO L93 Difference]: Finished difference Result 788 states and 1197 transitions. [2022-11-18 20:38:54,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:38:54,346 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2022-11-18 20:38:54,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:38:54,349 INFO L225 Difference]: With dead ends: 788 [2022-11-18 20:38:54,349 INFO L226 Difference]: Without dead ends: 443 [2022-11-18 20:38:54,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:38:54,352 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 991 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 3238 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 3540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 3238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:38:54,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 1100 Invalid, 3540 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [302 Valid, 3238 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-18 20:38:54,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-11-18 20:38:54,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 372. [2022-11-18 20:38:54,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 285 states have (on average 1.5192982456140351) internal successors, (433), 291 states have internal predecessors, (433), 61 states have call successors, (61), 22 states have call predecessors, (61), 25 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2022-11-18 20:38:54,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 561 transitions. [2022-11-18 20:38:54,407 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 561 transitions. Word has length 116 [2022-11-18 20:38:54,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:38:54,408 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 561 transitions. [2022-11-18 20:38:54,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-18 20:38:54,408 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 561 transitions. [2022-11-18 20:38:54,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-18 20:38:54,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:54,411 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:54,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:38:54,412 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:38:54,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:54,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1004440397, now seen corresponding path program 2 times [2022-11-18 20:38:54,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:54,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630363450] [2022-11-18 20:38:54,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:54,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:54,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:38:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:54,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:38:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:54,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:38:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:54,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:38:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:54,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:38:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:54,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:38:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:54,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 20:38:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:54,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 20:38:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:54,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:38:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:54,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:38:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:54,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 20:38:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:54,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:38:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:54,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 20:38:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:54,758 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 20:38:54,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:54,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630363450] [2022-11-18 20:38:54,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630363450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:54,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:54,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:38:54,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273704988] [2022-11-18 20:38:54,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:54,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:38:54,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:54,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:38:54,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:38:54,761 INFO L87 Difference]: Start difference. First operand 372 states and 561 transitions. Second operand has 11 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-18 20:38:57,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:38:57,846 INFO L93 Difference]: Finished difference Result 790 states and 1203 transitions. [2022-11-18 20:38:57,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:38:57,847 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 117 [2022-11-18 20:38:57,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:38:57,851 INFO L225 Difference]: With dead ends: 790 [2022-11-18 20:38:57,851 INFO L226 Difference]: Without dead ends: 445 [2022-11-18 20:38:57,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:38:57,854 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 987 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 3277 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 3573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 3277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:38:57,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 1100 Invalid, 3573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 3277 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-18 20:38:57,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2022-11-18 20:38:57,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 374. [2022-11-18 20:38:57,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 286 states have (on average 1.5174825174825175) internal successors, (434), 293 states have internal predecessors, (434), 61 states have call successors, (61), 22 states have call predecessors, (61), 26 states have return successors, (72), 60 states have call predecessors, (72), 60 states have call successors, (72) [2022-11-18 20:38:57,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 567 transitions. [2022-11-18 20:38:57,919 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 567 transitions. Word has length 117 [2022-11-18 20:38:57,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:38:57,921 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 567 transitions. [2022-11-18 20:38:57,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-18 20:38:57,921 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 567 transitions. [2022-11-18 20:38:57,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-18 20:38:57,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:57,926 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:57,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:38:57,926 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:38:57,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:57,927 INFO L85 PathProgramCache]: Analyzing trace with hash 945960143, now seen corresponding path program 1 times [2022-11-18 20:38:57,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:57,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910328817] [2022-11-18 20:38:57,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:57,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:58,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:38:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:58,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:38:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:58,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:38:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:58,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:38:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:58,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:38:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:58,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:38:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:58,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:38:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:58,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:38:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:58,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 20:38:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:58,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-18 20:38:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:58,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 20:38:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:58,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 20:38:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:58,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:38:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:58,167 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 20:38:58,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:58,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910328817] [2022-11-18 20:38:58,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910328817] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:38:58,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121695635] [2022-11-18 20:38:58,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:58,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:58,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:38:58,170 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:38:58,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:38:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:58,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:38:58,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:38:58,590 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 20:38:58,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:38:58,703 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 20:38:58,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121695635] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:38:58,704 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:38:58,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2022-11-18 20:38:58,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736980879] [2022-11-18 20:38:58,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:38:58,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:38:58,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:58,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:38:58,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:38:58,709 INFO L87 Difference]: Start difference. First operand 374 states and 567 transitions. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-18 20:39:01,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:01,424 INFO L93 Difference]: Finished difference Result 944 states and 1501 transitions. [2022-11-18 20:39:01,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:39:01,431 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 118 [2022-11-18 20:39:01,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:01,442 INFO L225 Difference]: With dead ends: 944 [2022-11-18 20:39:01,442 INFO L226 Difference]: Without dead ends: 772 [2022-11-18 20:39:01,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:39:01,445 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 1062 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 2188 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 2557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 2188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:01,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 1179 Invalid, 2557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 2188 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-18 20:39:01,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2022-11-18 20:39:01,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 677. [2022-11-18 20:39:01,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 525 states have (on average 1.5847619047619048) internal successors, (832), 532 states have internal predecessors, (832), 125 states have call successors, (125), 22 states have call predecessors, (125), 26 states have return successors, (146), 124 states have call predecessors, (146), 124 states have call successors, (146) [2022-11-18 20:39:01,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1103 transitions. [2022-11-18 20:39:01,546 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1103 transitions. Word has length 118 [2022-11-18 20:39:01,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:01,547 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 1103 transitions. [2022-11-18 20:39:01,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-18 20:39:01,547 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1103 transitions. [2022-11-18 20:39:01,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 20:39:01,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:01,553 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:01,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:39:01,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b502c102-f673-42f8-8d50-b902d3cd9991/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:39:01,774 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:01,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:01,775 INFO L85 PathProgramCache]: Analyzing trace with hash 2125577554, now seen corresponding path program 1 times [2022-11-18 20:39:01,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:01,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591029347] [2022-11-18 20:39:01,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:01,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:01,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:39:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:01,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:39:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:01,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:39:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:01,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:39:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:01,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:39:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:01,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:39:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:01,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:39:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:01,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:39:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:01,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-18 20:39:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:01,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:39:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:01,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 20:39:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:01,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 20:39:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:01,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-18 20:39:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:01,927 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 20:39:01,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:01,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591029347] [2022-11-18 20:39:01,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591029347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:01,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:01,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:39:01,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670580708] [2022-11-18 20:39:01,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:01,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:39:01,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:01,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:39:01,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:39:01,931 INFO L87 Difference]: Start difference. First operand 677 states and 1103 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:39:03,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:03,686 INFO L93 Difference]: Finished difference Result 1665 states and 2780 transitions. [2022-11-18 20:39:03,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:39:03,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2022-11-18 20:39:03,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:03,698 INFO L225 Difference]: With dead ends: 1665 [2022-11-18 20:39:03,698 INFO L226 Difference]: Without dead ends: 1056 [2022-11-18 20:39:03,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:39:03,704 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 860 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:03,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 687 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 20:39:03,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2022-11-18 20:39:03,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 977. [2022-11-18 20:39:03,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 761 states have (on average 1.5992115637319317) internal successors, (1217), 768 states have internal predecessors, (1217), 189 states have call successors, (189), 22 states have call predecessors, (189), 26 states have return successors, (220), 188 states have call predecessors, (220), 188 states have call successors, (220) [2022-11-18 20:39:03,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1626 transitions. [2022-11-18 20:39:03,857 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1626 transitions. Word has length 124 [2022-11-18 20:39:03,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:03,858 INFO L495 AbstractCegarLoop]: Abstraction has 977 states and 1626 transitions. [2022-11-18 20:39:03,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:39:03,858 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1626 transitions. [2022-11-18 20:39:03,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-18 20:39:03,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:03,866 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:03,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:39:03,866 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:03,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:03,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1685662962, now seen corresponding path program 1 times [2022-11-18 20:39:03,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:03,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062056074] [2022-11-18 20:39:03,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:03,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:03,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:39:03,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:03,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:39:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:03,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:39:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:04,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:39:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:04,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:39:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:04,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:39:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:04,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-18 20:39:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:04,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:39:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:04,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 20:39:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:04,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-18 20:39:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:04,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-18 20:39:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:04,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:39:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:04,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 20:39:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:04,040 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 20:39:04,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:04,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062056074] [2022-11-18 20:39:04,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062056074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:04,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:04,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:39:04,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892050635] [2022-11-18 20:39:04,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:04,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:39:04,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:04,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:39:04,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:39:04,043 INFO L87 Difference]: Start difference. First operand 977 states and 1626 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:39:05,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:05,847 INFO L93 Difference]: Finished difference Result 2380 states and 4025 transitions. [2022-11-18 20:39:05,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:39:05,848 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2022-11-18 20:39:05,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:05,868 INFO L225 Difference]: With dead ends: 2380 [2022-11-18 20:39:05,868 INFO L226 Difference]: Without dead ends: 1524 [2022-11-18 20:39:05,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:39:05,874 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 858 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:05,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 666 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 20:39:05,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2022-11-18 20:39:06,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1445. [2022-11-18 20:39:06,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1134 states have (on average 1.6084656084656084) internal successors, (1824), 1141 states have internal predecessors, (1824), 284 states have call successors, (284), 22 states have call predecessors, (284), 26 states have return successors, (315), 283 states have call predecessors, (315), 283 states have call successors, (315) [2022-11-18 20:39:06,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 2423 transitions. [2022-11-18 20:39:06,054 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 2423 transitions. Word has length 125 [2022-11-18 20:39:06,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:06,054 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 2423 transitions. [2022-11-18 20:39:06,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:39:06,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 2423 transitions. [2022-11-18 20:39:06,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-18 20:39:06,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:06,066 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:06,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:39:06,066 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:06,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:06,067 INFO L85 PathProgramCache]: Analyzing trace with hash 187384112, now seen corresponding path program 1 times [2022-11-18 20:39:06,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:06,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196188201] [2022-11-18 20:39:06,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:06,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:06,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:39:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:06,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:39:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:06,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:39:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:06,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:39:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:06,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:39:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:06,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:39:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:06,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-18 20:39:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:06,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 20:39:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:06,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:39:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:06,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 20:39:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:06,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:39:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:06,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 20:39:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:06,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-18 20:39:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:06,224 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 20:39:06,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:06,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196188201] [2022-11-18 20:39:06,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196188201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:06,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:06,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:39:06,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054047831] [2022-11-18 20:39:06,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:06,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:39:06,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:06,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:39:06,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:39:06,227 INFO L87 Difference]: Start difference. First operand 1445 states and 2423 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:39:08,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:08,055 INFO L93 Difference]: Finished difference Result 3427 states and 5866 transitions. [2022-11-18 20:39:08,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:39:08,055 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2022-11-18 20:39:08,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:08,071 INFO L225 Difference]: With dead ends: 3427 [2022-11-18 20:39:08,071 INFO L226 Difference]: Without dead ends: 2228 [2022-11-18 20:39:08,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:39:08,079 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 856 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:08,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 662 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 20:39:08,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2022-11-18 20:39:08,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 2149. [2022-11-18 20:39:08,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 1715 states have (on average 1.6157434402332362) internal successors, (2771), 1722 states have internal predecessors, (2771), 407 states have call successors, (407), 22 states have call predecessors, (407), 26 states have return successors, (454), 406 states have call predecessors, (454), 406 states have call successors, (454) [2022-11-18 20:39:08,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3632 transitions. [2022-11-18 20:39:08,350 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3632 transitions. Word has length 126 [2022-11-18 20:39:08,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:08,351 INFO L495 AbstractCegarLoop]: Abstraction has 2149 states and 3632 transitions. [2022-11-18 20:39:08,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:39:08,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3632 transitions. [2022-11-18 20:39:08,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-18 20:39:08,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:08,365 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:08,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:39:08,366 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:08,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:08,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1884345073, now seen corresponding path program 1 times [2022-11-18 20:39:08,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:08,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176532671] [2022-11-18 20:39:08,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:08,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:08,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:39:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:08,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:39:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:08,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:39:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:08,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:39:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:08,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:39:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:08,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:39:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:08,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 20:39:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:08,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-18 20:39:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:08,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 20:39:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:08,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-18 20:39:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:08,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-18 20:39:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:08,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-18 20:39:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:08,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-18 20:39:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:08,550 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 20:39:08,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:08,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176532671] [2022-11-18 20:39:08,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176532671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:08,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:08,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:39:08,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930646713] [2022-11-18 20:39:08,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:08,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:39:08,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:08,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:39:08,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:39:08,554 INFO L87 Difference]: Start difference. First operand 2149 states and 3632 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:39:10,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:10,533 INFO L93 Difference]: Finished difference Result 5046 states and 8720 transitions. [2022-11-18 20:39:10,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:39:10,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2022-11-18 20:39:10,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:10,559 INFO L225 Difference]: With dead ends: 5046 [2022-11-18 20:39:10,559 INFO L226 Difference]: Without dead ends: 3347 [2022-11-18 20:39:10,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:39:10,569 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 854 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:10,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 662 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 20:39:10,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2022-11-18 20:39:10,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 3268. [2022-11-18 20:39:10,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3268 states, 2655 states have (on average 1.6203389830508474) internal successors, (4302), 2662 states have internal predecessors, (4302), 586 states have call successors, (586), 22 states have call predecessors, (586), 26 states have return successors, (659), 585 states have call predecessors, (659), 585 states have call successors, (659) [2022-11-18 20:39:11,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3268 states to 3268 states and 5547 transitions. [2022-11-18 20:39:11,015 INFO L78 Accepts]: Start accepts. Automaton has 3268 states and 5547 transitions. Word has length 127 [2022-11-18 20:39:11,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:11,016 INFO L495 AbstractCegarLoop]: Abstraction has 3268 states and 5547 transitions. [2022-11-18 20:39:11,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:39:11,016 INFO L276 IsEmpty]: Start isEmpty. Operand 3268 states and 5547 transitions. [2022-11-18 20:39:11,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-18 20:39:11,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:11,034 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:11,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:39:11,035 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:11,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:11,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1777285708, now seen corresponding path program 1 times [2022-11-18 20:39:11,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:11,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185935143] [2022-11-18 20:39:11,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:11,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:11,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:39:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:11,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:39:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:11,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:39:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:11,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:39:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:11,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:39:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:11,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:39:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:11,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 20:39:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:11,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-18 20:39:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:11,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-18 20:39:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:11,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 20:39:11,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:11,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-18 20:39:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:11,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-18 20:39:11,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:11,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-18 20:39:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:11,190 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 20:39:11,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:11,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185935143] [2022-11-18 20:39:11,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185935143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:11,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:11,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:39:11,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029953534] [2022-11-18 20:39:11,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:11,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:39:11,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:11,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:39:11,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:39:11,193 INFO L87 Difference]: Start difference. First operand 3268 states and 5547 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:39:13,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:13,402 INFO L93 Difference]: Finished difference Result 7964 states and 13819 transitions. [2022-11-18 20:39:13,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:39:13,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2022-11-18 20:39:13,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:13,439 INFO L225 Difference]: With dead ends: 7964 [2022-11-18 20:39:13,439 INFO L226 Difference]: Without dead ends: 5378 [2022-11-18 20:39:13,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:39:13,456 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 852 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:13,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 685 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 20:39:13,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5378 states. [2022-11-18 20:39:14,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5378 to 5299. [2022-11-18 20:39:14,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5299 states, 4310 states have (on average 1.6134570765661254) internal successors, (6954), 4317 states have internal predecessors, (6954), 962 states have call successors, (962), 22 states have call predecessors, (962), 26 states have return successors, (1079), 961 states have call predecessors, (1079), 961 states have call successors, (1079) [2022-11-18 20:39:14,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5299 states to 5299 states and 8995 transitions. [2022-11-18 20:39:14,276 INFO L78 Accepts]: Start accepts. Automaton has 5299 states and 8995 transitions. Word has length 128 [2022-11-18 20:39:14,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:14,277 INFO L495 AbstractCegarLoop]: Abstraction has 5299 states and 8995 transitions. [2022-11-18 20:39:14,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:39:14,278 INFO L276 IsEmpty]: Start isEmpty. Operand 5299 states and 8995 transitions. [2022-11-18 20:39:14,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-18 20:39:14,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:14,345 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:14,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:39:14,346 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:14,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:14,347 INFO L85 PathProgramCache]: Analyzing trace with hash 2047787629, now seen corresponding path program 1 times [2022-11-18 20:39:14,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:14,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756704192] [2022-11-18 20:39:14,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:14,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:14,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:39:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:14,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:39:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:14,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:39:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:14,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:39:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:14,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:39:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:14,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:39:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:14,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:39:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:14,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 20:39:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:14,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 20:39:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:14,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 20:39:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:14,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-18 20:39:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:14,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-18 20:39:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:14,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-18 20:39:14,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:14,508 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 20:39:14,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:14,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756704192] [2022-11-18 20:39:14,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756704192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:14,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:14,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:39:14,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30192004] [2022-11-18 20:39:14,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:14,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:39:14,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:14,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:39:14,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:39:14,511 INFO L87 Difference]: Start difference. First operand 5299 states and 8995 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:39:16,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:16,980 INFO L93 Difference]: Finished difference Result 13106 states and 22728 transitions. [2022-11-18 20:39:16,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:39:16,981 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2022-11-18 20:39:16,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:17,062 INFO L225 Difference]: With dead ends: 13106 [2022-11-18 20:39:17,063 INFO L226 Difference]: Without dead ends: 8866 [2022-11-18 20:39:17,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:39:17,081 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 850 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:17,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 671 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 20:39:17,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8866 states. [2022-11-18 20:39:18,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8866 to 8787. [2022-11-18 20:39:18,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8787 states, 7192 states have (on average 1.6112347052280311) internal successors, (11588), 7199 states have internal predecessors, (11588), 1568 states have call successors, (1568), 22 states have call predecessors, (1568), 26 states have return successors, (1763), 1567 states have call predecessors, (1763), 1567 states have call successors, (1763) [2022-11-18 20:39:18,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8787 states to 8787 states and 14919 transitions. [2022-11-18 20:39:18,387 INFO L78 Accepts]: Start accepts. Automaton has 8787 states and 14919 transitions. Word has length 129 [2022-11-18 20:39:18,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:18,387 INFO L495 AbstractCegarLoop]: Abstraction has 8787 states and 14919 transitions. [2022-11-18 20:39:18,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:39:18,388 INFO L276 IsEmpty]: Start isEmpty. Operand 8787 states and 14919 transitions. [2022-11-18 20:39:18,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-18 20:39:18,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:18,425 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:18,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:39:18,425 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:18,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:18,426 INFO L85 PathProgramCache]: Analyzing trace with hash -236287054, now seen corresponding path program 1 times [2022-11-18 20:39:18,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:18,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232483572] [2022-11-18 20:39:18,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:18,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:18,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:39:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:18,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:39:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:18,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:39:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:18,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:39:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:18,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:39:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:18,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:39:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:18,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:39:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:18,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 20:39:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:18,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:39:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:18,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 20:39:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:18,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 20:39:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:18,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 20:39:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:18,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-18 20:39:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:18,563 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 20:39:18,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:18,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232483572] [2022-11-18 20:39:18,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232483572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:18,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:18,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:39:18,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392154142] [2022-11-18 20:39:18,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:18,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:39:18,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:18,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:39:18,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:39:18,568 INFO L87 Difference]: Start difference. First operand 8787 states and 14919 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:39:21,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:21,573 INFO L93 Difference]: Finished difference Result 22765 states and 39434 transitions. [2022-11-18 20:39:21,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:39:21,574 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2022-11-18 20:39:21,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:21,668 INFO L225 Difference]: With dead ends: 22765 [2022-11-18 20:39:21,669 INFO L226 Difference]: Without dead ends: 15459 [2022-11-18 20:39:21,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:39:21,707 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 848 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:21,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 709 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 20:39:21,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15459 states. [2022-11-18 20:39:23,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15459 to 15380. [2022-11-18 20:39:23,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15380 states, 12582 states have (on average 1.6018121125417262) internal successors, (20154), 12589 states have internal predecessors, (20154), 2771 states have call successors, (2771), 22 states have call predecessors, (2771), 26 states have return successors, (3110), 2770 states have call predecessors, (3110), 2770 states have call successors, (3110) [2022-11-18 20:39:23,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15380 states to 15380 states and 26035 transitions. [2022-11-18 20:39:23,641 INFO L78 Accepts]: Start accepts. Automaton has 15380 states and 26035 transitions. Word has length 130 [2022-11-18 20:39:23,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:23,642 INFO L495 AbstractCegarLoop]: Abstraction has 15380 states and 26035 transitions. [2022-11-18 20:39:23,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:39:23,642 INFO L276 IsEmpty]: Start isEmpty. Operand 15380 states and 26035 transitions. [2022-11-18 20:39:23,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-18 20:39:23,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:23,687 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:23,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:39:23,687 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:23,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:23,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1431568180, now seen corresponding path program 1 times [2022-11-18 20:39:23,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:23,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083501671] [2022-11-18 20:39:23,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:23,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:23,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:39:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:23,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:39:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:23,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:39:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:23,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:39:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:23,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:39:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:23,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:39:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:23,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:39:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:23,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:39:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:23,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-18 20:39:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:23,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-18 20:39:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:23,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:39:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:23,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-18 20:39:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:23,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:39:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:23,816 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 20:39:23,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:23,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083501671] [2022-11-18 20:39:23,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083501671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:23,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:23,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:39:23,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186915275] [2022-11-18 20:39:23,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:23,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:39:23,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:23,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:39:23,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:39:23,820 INFO L87 Difference]: Start difference. First operand 15380 states and 26035 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:39:28,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:28,152 INFO L93 Difference]: Finished difference Result 40721 states and 70417 transitions. [2022-11-18 20:39:28,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:39:28,155 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 131 [2022-11-18 20:39:28,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:28,305 INFO L225 Difference]: With dead ends: 40721 [2022-11-18 20:39:28,305 INFO L226 Difference]: Without dead ends: 27429 [2022-11-18 20:39:28,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:39:28,354 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 846 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:28,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 665 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 20:39:28,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27429 states. [2022-11-18 20:39:31,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27429 to 27350. [2022-11-18 20:39:31,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27350 states, 22513 states have (on average 1.5973881757206947) internal successors, (35962), 22520 states have internal predecessors, (35962), 4810 states have call successors, (4810), 22 states have call predecessors, (4810), 26 states have return successors, (5423), 4809 states have call predecessors, (5423), 4809 states have call successors, (5423) [2022-11-18 20:39:31,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27350 states to 27350 states and 46195 transitions. [2022-11-18 20:39:31,587 INFO L78 Accepts]: Start accepts. Automaton has 27350 states and 46195 transitions. Word has length 131 [2022-11-18 20:39:31,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:31,592 INFO L495 AbstractCegarLoop]: Abstraction has 27350 states and 46195 transitions. [2022-11-18 20:39:31,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:39:31,593 INFO L276 IsEmpty]: Start isEmpty. Operand 27350 states and 46195 transitions. [2022-11-18 20:39:31,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-18 20:39:31,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:31,663 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:31,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:39:31,664 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:31,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:31,665 INFO L85 PathProgramCache]: Analyzing trace with hash 302873936, now seen corresponding path program 1 times [2022-11-18 20:39:31,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:31,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387454730] [2022-11-18 20:39:31,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:31,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:31,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:39:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:31,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:39:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:31,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:39:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:31,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:39:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:31,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:39:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:31,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:39:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:31,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 20:39:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:31,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-18 20:39:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:31,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 20:39:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:31,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-18 20:39:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:31,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 20:39:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:31,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 20:39:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:31,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-18 20:39:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:31,854 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 20:39:31,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:31,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387454730] [2022-11-18 20:39:31,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387454730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:31,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:31,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:39:31,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886320361] [2022-11-18 20:39:31,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:31,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:39:31,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:31,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:39:31,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:39:31,859 INFO L87 Difference]: Start difference. First operand 27350 states and 46195 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:39:38,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:38,147 INFO L93 Difference]: Finished difference Result 74508 states and 128016 transitions. [2022-11-18 20:39:38,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:39:38,147 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 132 [2022-11-18 20:39:38,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:38,430 INFO L225 Difference]: With dead ends: 74508 [2022-11-18 20:39:38,431 INFO L226 Difference]: Without dead ends: 49978 [2022-11-18 20:39:38,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:39:38,510 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 844 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:38,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 667 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-18 20:39:38,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49978 states. [2022-11-18 20:39:44,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49978 to 49899. [2022-11-18 20:39:44,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49899 states, 41347 states have (on average 1.5914818487435607) internal successors, (65803), 41354 states have internal predecessors, (65803), 8525 states have call successors, (8525), 22 states have call predecessors, (8525), 26 states have return successors, (9670), 8524 states have call predecessors, (9670), 8524 states have call successors, (9670) [2022-11-18 20:39:44,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49899 states to 49899 states and 83998 transitions. [2022-11-18 20:39:44,481 INFO L78 Accepts]: Start accepts. Automaton has 49899 states and 83998 transitions. Word has length 132 [2022-11-18 20:39:44,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:44,482 INFO L495 AbstractCegarLoop]: Abstraction has 49899 states and 83998 transitions. [2022-11-18 20:39:44,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:39:44,482 INFO L276 IsEmpty]: Start isEmpty. Operand 49899 states and 83998 transitions. [2022-11-18 20:39:44,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-18 20:39:44,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:44,537 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:44,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 20:39:44,538 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:44,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:44,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1926694636, now seen corresponding path program 1 times [2022-11-18 20:39:44,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:44,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020755147] [2022-11-18 20:39:44,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:44,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:44,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:44,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:39:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:44,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:39:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:44,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:39:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:44,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:39:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:44,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:39:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:44,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:39:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:44,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 20:39:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:44,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 20:39:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:44,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-18 20:39:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:44,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-18 20:39:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:44,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-18 20:39:44,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:44,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-18 20:39:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:44,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-18 20:39:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:44,674 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 20:39:44,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:44,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020755147] [2022-11-18 20:39:44,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020755147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:44,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:44,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:39:44,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90462177] [2022-11-18 20:39:44,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:44,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:39:44,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:44,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:39:44,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:39:44,679 INFO L87 Difference]: Start difference. First operand 49899 states and 83998 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:39:54,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:54,857 INFO L93 Difference]: Finished difference Result 92994 states and 160147 transitions. [2022-11-18 20:39:54,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:39:54,858 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 133 [2022-11-18 20:39:54,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:55,350 INFO L225 Difference]: With dead ends: 92994 [2022-11-18 20:39:55,351 INFO L226 Difference]: Without dead ends: 92822 [2022-11-18 20:39:55,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:39:55,410 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 842 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:55,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 665 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-18 20:39:55,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92822 states.