./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product23.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R --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 c32d742da56eb7f975371d3819f8188d43c88569b223fcc4a7217dc4d57efe24 --- 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-38b53e6 [2022-11-25 17:28:40,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:28:40,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:28:40,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:28:40,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:28:40,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:28:40,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:28:40,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:28:40,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:28:40,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:28:40,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:28:40,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:28:40,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:28:40,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:28:40,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:28:40,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:28:40,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:28:40,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:28:40,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:28:40,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:28:40,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:28:40,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:28:40,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:28:40,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:28:40,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:28:40,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:28:40,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:28:40,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:28:40,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:28:40,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:28:40,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:28:40,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:28:40,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:28:40,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:28:40,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:28:40,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:28:40,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:28:40,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:28:40,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:28:40,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:28:40,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:28:40,587 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:28:40,621 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:28:40,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:28:40,627 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:28:40,627 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:28:40,628 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:28:40,628 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:28:40,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:28:40,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:28:40,630 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:28:40,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:28:40,631 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:28:40,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:28:40,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:28:40,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:28:40,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:28:40,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:28:40,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:28:40,633 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:28:40,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:28:40,634 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:28:40,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:28:40,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:28:40,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:28:40,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:28:40,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:28:40,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:28:40,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:28:40,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:28:40,637 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:28:40,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:28:40,637 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:28:40,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:28:40,638 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:28:40,638 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:28:40,639 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c32d742da56eb7f975371d3819f8188d43c88569b223fcc4a7217dc4d57efe24 [2022-11-25 17:28:40,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:28:40,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:28:40,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:28:40,987 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:28:40,988 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:28:40,989 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/product-lines/email_spec3_product23.cil.c [2022-11-25 17:28:44,135 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:28:44,471 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:28:44,471 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/sv-benchmarks/c/product-lines/email_spec3_product23.cil.c [2022-11-25 17:28:44,494 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/data/0822c2c7b/fbad2fbd558b4d62aaf73d1a82119926/FLAGd676ad68b [2022-11-25 17:28:44,513 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/data/0822c2c7b/fbad2fbd558b4d62aaf73d1a82119926 [2022-11-25 17:28:44,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:28:44,518 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:28:44,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:28:44,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:28:44,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:28:44,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:28:44" (1/1) ... [2022-11-25 17:28:44,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43c33739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:28:44, skipping insertion in model container [2022-11-25 17:28:44,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:28:44" (1/1) ... [2022-11-25 17:28:44,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:28:44,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:28:44,904 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:28:44,910 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:28:44,927 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:28:45,005 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/sv-benchmarks/c/product-lines/email_spec3_product23.cil.c[22258,22271] [2022-11-25 17:28:45,088 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:28:45,091 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:28:45,116 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:28:45,133 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:28:45,133 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:28:45,135 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:28:45,148 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:28:45,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:28:45,284 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:28:45,313 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:28:45,323 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:28:45,326 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:28:45,351 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/sv-benchmarks/c/product-lines/email_spec3_product23.cil.c[22258,22271] [2022-11-25 17:28:45,366 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:28:45,367 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:28:45,369 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:28:45,371 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:28:45,372 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:28:45,373 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:28:45,377 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:28:45,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:28:45,485 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:28:45,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:28:45 WrapperNode [2022-11-25 17:28:45,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:28:45,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:28:45,487 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:28:45,487 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:28:45,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:28:45" (1/1) ... [2022-11-25 17:28:45,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:28:45" (1/1) ... [2022-11-25 17:28:45,614 INFO L138 Inliner]: procedures = 131, calls = 227, calls flagged for inlining = 58, calls inlined = 51, statements flattened = 958 [2022-11-25 17:28:45,615 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:28:45,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:28:45,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:28:45,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:28:45,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:28:45" (1/1) ... [2022-11-25 17:28:45,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:28:45" (1/1) ... [2022-11-25 17:28:45,636 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:28:45" (1/1) ... [2022-11-25 17:28:45,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:28:45" (1/1) ... [2022-11-25 17:28:45,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:28:45" (1/1) ... [2022-11-25 17:28:45,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:28:45" (1/1) ... [2022-11-25 17:28:45,682 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:28:45" (1/1) ... [2022-11-25 17:28:45,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:28:45" (1/1) ... [2022-11-25 17:28:45,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:28:45,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:28:45,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:28:45,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:28:45,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:28:45" (1/1) ... [2022-11-25 17:28:45,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:28:45,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:28:45,755 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:28:45,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:28:45,801 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-25 17:28:45,802 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-25 17:28:45,802 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-25 17:28:45,802 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-25 17:28:45,802 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-25 17:28:45,802 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-25 17:28:45,803 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-25 17:28:45,803 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-25 17:28:45,803 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-25 17:28:45,804 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-25 17:28:45,805 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-25 17:28:45,805 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-25 17:28:45,805 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-25 17:28:45,806 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-25 17:28:45,806 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-25 17:28:45,806 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-25 17:28:45,807 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-25 17:28:45,807 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-25 17:28:45,807 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-25 17:28:45,807 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-25 17:28:45,807 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-25 17:28:45,808 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-25 17:28:45,808 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-25 17:28:45,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:28:45,808 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-25 17:28:45,808 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-25 17:28:45,809 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-25 17:28:45,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-25 17:28:45,809 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-25 17:28:45,809 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-25 17:28:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-25 17:28:45,810 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-25 17:28:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-25 17:28:45,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-25 17:28:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-25 17:28:45,811 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-25 17:28:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-25 17:28:45,812 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-25 17:28:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-25 17:28:45,812 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-25 17:28:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-25 17:28:45,813 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-25 17:28:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-25 17:28:45,813 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-25 17:28:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-25 17:28:45,814 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-25 17:28:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:28:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-25 17:28:45,814 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-25 17:28:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-25 17:28:45,814 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-25 17:28:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:28:45,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:28:46,052 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:28:46,054 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:28:47,075 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:28:47,086 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:28:47,086 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 17:28:47,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:28:47 BoogieIcfgContainer [2022-11-25 17:28:47,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:28:47,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:28:47,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:28:47,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:28:47,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:28:44" (1/3) ... [2022-11-25 17:28:47,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e39a727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:28:47, skipping insertion in model container [2022-11-25 17:28:47,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:28:45" (2/3) ... [2022-11-25 17:28:47,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e39a727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:28:47, skipping insertion in model container [2022-11-25 17:28:47,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:28:47" (3/3) ... [2022-11-25 17:28:47,098 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec3_product23.cil.c [2022-11-25 17:28:47,117 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:28:47,118 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:28:47,207 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:28:47,218 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;@7bac1420, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:28:47,218 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 17:28:47,223 INFO L276 IsEmpty]: Start isEmpty. Operand has 384 states, 300 states have (on average 1.5666666666666667) internal successors, (470), 305 states have internal predecessors, (470), 58 states have call successors, (58), 24 states have call predecessors, (58), 24 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2022-11-25 17:28:47,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-25 17:28:47,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:28:47,244 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:28:47,245 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:28:47,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:28:47,251 INFO L85 PathProgramCache]: Analyzing trace with hash -391445380, now seen corresponding path program 1 times [2022-11-25 17:28:47,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:28:47,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162364505] [2022-11-25 17:28:47,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:28:47,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:28:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:47,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:28:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:47,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:28:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:47,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:28:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:47,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 17:28:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:47,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:28:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:47,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 17:28:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:48,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 17:28:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:48,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 17:28:48,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:48,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 17:28:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:48,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 17:28:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:48,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-25 17:28:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:48,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-25 17:28:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:48,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-25 17:28:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:48,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-25 17:28:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:48,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-25 17:28:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:48,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-25 17:28:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:48,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-25 17:28:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:48,092 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 17:28:48,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:28:48,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162364505] [2022-11-25 17:28:48,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162364505] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:28:48,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069810470] [2022-11-25 17:28:48,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:28:48,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:28:48,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:28:48,103 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:28:48,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:28:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:48,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 1224 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 17:28:48,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:28:48,602 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-25 17:28:48,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:28:48,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069810470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:28:48,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:28:48,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-11-25 17:28:48,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009086335] [2022-11-25 17:28:48,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:28:48,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:28:48,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:28:48,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:28:48,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:28:48,663 INFO L87 Difference]: Start difference. First operand has 384 states, 300 states have (on average 1.5666666666666667) internal successors, (470), 305 states have internal predecessors, (470), 58 states have call successors, (58), 24 states have call predecessors, (58), 24 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 17:28:48,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:28:48,748 INFO L93 Difference]: Finished difference Result 574 states and 862 transitions. [2022-11-25 17:28:48,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:28:48,755 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 131 [2022-11-25 17:28:48,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:28:48,771 INFO L225 Difference]: With dead ends: 574 [2022-11-25 17:28:48,771 INFO L226 Difference]: Without dead ends: 376 [2022-11-25 17:28:48,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:28:48,780 INFO L413 NwaCegarLoop]: 580 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, 580 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 [2022-11-25 17:28:48,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:28:48,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-11-25 17:28:48,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2022-11-25 17:28:48,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 294 states have (on average 1.5612244897959184) internal successors, (459), 297 states have internal predecessors, (459), 58 states have call successors, (58), 24 states have call predecessors, (58), 23 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2022-11-25 17:28:48,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 572 transitions. [2022-11-25 17:28:48,851 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 572 transitions. Word has length 131 [2022-11-25 17:28:48,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:28:48,852 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 572 transitions. [2022-11-25 17:28:48,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 17:28:48,853 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 572 transitions. [2022-11-25 17:28:48,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-25 17:28:48,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:28:48,859 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:28:48,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:28:49,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-25 17:28:49,067 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:28:49,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:28:49,068 INFO L85 PathProgramCache]: Analyzing trace with hash 935095137, now seen corresponding path program 1 times [2022-11-25 17:28:49,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:28:49,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190061334] [2022-11-25 17:28:49,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:28:49,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:28:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:49,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:28:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:49,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:28:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:49,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:28:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:49,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 17:28:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:49,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:28:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:49,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 17:28:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:49,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 17:28:49,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:49,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 17:28:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:49,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-25 17:28:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:49,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-25 17:28:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:49,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-25 17:28:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:49,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-25 17:28:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:49,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 17:28:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:49,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-25 17:28:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:49,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-25 17:28:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:49,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-25 17:28:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:49,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-25 17:28:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:49,610 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 17:28:49,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:28:49,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190061334] [2022-11-25 17:28:49,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190061334] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:28:49,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711580572] [2022-11-25 17:28:49,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:28:49,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:28:49,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:28:49,619 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:28:49,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:28:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:49,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 1225 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 17:28:49,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:28:50,013 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-25 17:28:50,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:28:50,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711580572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:28:50,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:28:50,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-25 17:28:50,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739502407] [2022-11-25 17:28:50,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:28:50,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:28:50,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:28:50,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:28:50,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:28:50,017 INFO L87 Difference]: Start difference. First operand 376 states and 572 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 17:28:50,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:28:50,062 INFO L93 Difference]: Finished difference Result 563 states and 836 transitions. [2022-11-25 17:28:50,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:28:50,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 132 [2022-11-25 17:28:50,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:28:50,066 INFO L225 Difference]: With dead ends: 563 [2022-11-25 17:28:50,067 INFO L226 Difference]: Without dead ends: 379 [2022-11-25 17:28:50,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:28:50,070 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 1 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1138 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 [2022-11-25 17:28:50,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1138 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:28:50,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-11-25 17:28:50,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 378. [2022-11-25 17:28:50,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 296 states have (on average 1.5574324324324325) internal successors, (461), 299 states have internal predecessors, (461), 58 states have call successors, (58), 24 states have call predecessors, (58), 23 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2022-11-25 17:28:50,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 574 transitions. [2022-11-25 17:28:50,098 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 574 transitions. Word has length 132 [2022-11-25 17:28:50,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:28:50,099 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 574 transitions. [2022-11-25 17:28:50,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 17:28:50,100 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 574 transitions. [2022-11-25 17:28:50,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-25 17:28:50,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:28:50,105 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:28:50,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:28:50,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:28:50,312 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:28:50,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:28:50,313 INFO L85 PathProgramCache]: Analyzing trace with hash 719647433, now seen corresponding path program 1 times [2022-11-25 17:28:50,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:28:50,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340683092] [2022-11-25 17:28:50,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:28:50,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:28:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:50,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:28:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:50,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:28:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:50,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:28:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:50,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 17:28:50,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:50,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:28:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:50,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 17:28:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:50,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-25 17:28:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:50,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 17:28:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:50,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 17:28:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:50,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-25 17:28:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:50,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-25 17:28:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:50,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 17:28:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:50,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-25 17:28:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:50,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-25 17:28:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:50,615 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-25 17:28:50,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:28:50,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340683092] [2022-11-25 17:28:50,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340683092] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:28:50,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020467907] [2022-11-25 17:28:50,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:28:50,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:28:50,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:28:50,618 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:28:50,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:28:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:50,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:28:50,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:28:50,981 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-25 17:28:50,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:28:50,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020467907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:28:50,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:28:50,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-25 17:28:50,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711612973] [2022-11-25 17:28:50,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:28:50,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:28:50,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:28:50,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:28:50,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:28:50,987 INFO L87 Difference]: Start difference. First operand 378 states and 574 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 17:28:51,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:28:51,029 INFO L93 Difference]: Finished difference Result 804 states and 1240 transitions. [2022-11-25 17:28:51,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:28:51,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 122 [2022-11-25 17:28:51,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:28:51,034 INFO L225 Difference]: With dead ends: 804 [2022-11-25 17:28:51,034 INFO L226 Difference]: Without dead ends: 453 [2022-11-25 17:28:51,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:28:51,059 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 134 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1123 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 [2022-11-25 17:28:51,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1123 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:28:51,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-11-25 17:28:51,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 445. [2022-11-25 17:28:51,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 349 states have (on average 1.5759312320916905) internal successors, (550), 352 states have internal predecessors, (550), 72 states have call successors, (72), 24 states have call predecessors, (72), 23 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2022-11-25 17:28:51,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 691 transitions. [2022-11-25 17:28:51,099 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 691 transitions. Word has length 122 [2022-11-25 17:28:51,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:28:51,100 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 691 transitions. [2022-11-25 17:28:51,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 17:28:51,100 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 691 transitions. [2022-11-25 17:28:51,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-25 17:28:51,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:28:51,104 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:28:51,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:28:51,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:28:51,312 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:28:51,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:28:51,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1734292050, now seen corresponding path program 1 times [2022-11-25 17:28:51,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:28:51,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037174953] [2022-11-25 17:28:51,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:28:51,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:28:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:51,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:28:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:51,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:28:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:51,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:28:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:51,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 17:28:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:51,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:28:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:51,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 17:28:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:51,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 17:28:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:51,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 17:28:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:51,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 17:28:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:51,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 17:28:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:51,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:28:51,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:51,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-25 17:28:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:51,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-25 17:28:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:51,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-25 17:28:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:51,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-25 17:28:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:51,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-25 17:28:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:51,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 17:28:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:51,629 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-25 17:28:51,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:28:51,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037174953] [2022-11-25 17:28:51,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037174953] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:28:51,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046630383] [2022-11-25 17:28:51,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:28:51,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:28:51,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:28:51,633 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:28:51,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:28:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:51,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 1259 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 17:28:51,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:28:52,069 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-25 17:28:52,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:28:52,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046630383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:28:52,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:28:52,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-11-25 17:28:52,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373152408] [2022-11-25 17:28:52,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:28:52,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:28:52,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:28:52,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:28:52,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:28:52,073 INFO L87 Difference]: Start difference. First operand 445 states and 691 transitions. Second operand has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-25 17:28:52,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:28:52,161 INFO L93 Difference]: Finished difference Result 881 states and 1372 transitions. [2022-11-25 17:28:52,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:28:52,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 142 [2022-11-25 17:28:52,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:28:52,166 INFO L225 Difference]: With dead ends: 881 [2022-11-25 17:28:52,167 INFO L226 Difference]: Without dead ends: 447 [2022-11-25 17:28:52,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:28:52,170 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 152 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 2077 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 [2022-11-25 17:28:52,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 2077 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:28:52,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-11-25 17:28:52,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2022-11-25 17:28:52,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 350 states have (on average 1.5742857142857143) internal successors, (551), 354 states have internal predecessors, (551), 72 states have call successors, (72), 24 states have call predecessors, (72), 24 states have return successors, (71), 68 states have call predecessors, (71), 69 states have call successors, (71) [2022-11-25 17:28:52,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 694 transitions. [2022-11-25 17:28:52,210 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 694 transitions. Word has length 142 [2022-11-25 17:28:52,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:28:52,210 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 694 transitions. [2022-11-25 17:28:52,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-25 17:28:52,211 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 694 transitions. [2022-11-25 17:28:52,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-25 17:28:52,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:28:52,216 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:28:52,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:28:52,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:28:52,424 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:28:52,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:28:52,425 INFO L85 PathProgramCache]: Analyzing trace with hash 994369784, now seen corresponding path program 1 times [2022-11-25 17:28:52,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:28:52,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296877039] [2022-11-25 17:28:52,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:28:52,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:28:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:52,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:28:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:52,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:28:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:52,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:28:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:52,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:28:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:52,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-25 17:28:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:52,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 17:28:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:52,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-25 17:28:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:52,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 17:28:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:52,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-25 17:28:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:52,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-25 17:28:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:52,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 17:28:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:52,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-25 17:28:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:52,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-25 17:28:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:52,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-25 17:28:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:52,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-25 17:28:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:52,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-25 17:28:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:52,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-25 17:28:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:52,805 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-25 17:28:52,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:28:52,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296877039] [2022-11-25 17:28:52,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296877039] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:28:52,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918698969] [2022-11-25 17:28:52,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:28:52,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:28:52,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:28:52,808 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:28:52,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:28:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:53,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 1260 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:28:53,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:28:53,235 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-25 17:28:53,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:28:53,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918698969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:28:53,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:28:53,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-11-25 17:28:53,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029156358] [2022-11-25 17:28:53,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:28:53,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:28:53,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:28:53,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:28:53,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-11-25 17:28:53,239 INFO L87 Difference]: Start difference. First operand 447 states and 694 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-25 17:28:53,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:28:53,329 INFO L93 Difference]: Finished difference Result 883 states and 1377 transitions. [2022-11-25 17:28:53,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:28:53,330 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 143 [2022-11-25 17:28:53,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:28:53,333 INFO L225 Difference]: With dead ends: 883 [2022-11-25 17:28:53,333 INFO L226 Difference]: Without dead ends: 449 [2022-11-25 17:28:53,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:28:53,336 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 151 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 2066 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 [2022-11-25 17:28:53,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 2066 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:28:53,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-11-25 17:28:53,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2022-11-25 17:28:53,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 351 states have (on average 1.5726495726495726) internal successors, (552), 356 states have internal predecessors, (552), 72 states have call successors, (72), 24 states have call predecessors, (72), 25 states have return successors, (76), 68 states have call predecessors, (76), 69 states have call successors, (76) [2022-11-25 17:28:53,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 700 transitions. [2022-11-25 17:28:53,364 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 700 transitions. Word has length 143 [2022-11-25 17:28:53,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:28:53,364 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 700 transitions. [2022-11-25 17:28:53,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-25 17:28:53,365 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 700 transitions. [2022-11-25 17:28:53,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-25 17:28:53,367 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:28:53,368 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:28:53,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:28:53,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:28:53,575 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:28:53,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:28:53,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1552124652, now seen corresponding path program 1 times [2022-11-25 17:28:53,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:28:53,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707272321] [2022-11-25 17:28:53,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:28:53,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:28:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:53,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:28:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:53,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:28:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:53,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:28:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:53,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:28:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:53,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 17:28:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:53,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-25 17:28:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:53,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 17:28:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:53,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 17:28:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:53,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-25 17:28:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:53,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-25 17:28:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:53,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-25 17:28:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:53,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-25 17:28:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:53,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-25 17:28:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:53,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-25 17:28:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:53,829 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-25 17:28:53,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:28:53,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707272321] [2022-11-25 17:28:53,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707272321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:28:53,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:28:53,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 17:28:53,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735038690] [2022-11-25 17:28:53,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:28:53,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:28:53,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:28:53,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:28:53,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:28:53,832 INFO L87 Difference]: Start difference. First operand 449 states and 700 transitions. Second operand has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-25 17:28:56,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:28:56,412 INFO L93 Difference]: Finished difference Result 997 states and 1577 transitions. [2022-11-25 17:28:56,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:28:56,413 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 125 [2022-11-25 17:28:56,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:28:56,417 INFO L225 Difference]: With dead ends: 997 [2022-11-25 17:28:56,417 INFO L226 Difference]: Without dead ends: 571 [2022-11-25 17:28:56,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-25 17:28:56,420 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 1395 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:28:56,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1415 Valid, 1192 Invalid, 2971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-25 17:28:56,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-11-25 17:28:56,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 449. [2022-11-25 17:28:56,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 351 states have (on average 1.5726495726495726) internal successors, (552), 356 states have internal predecessors, (552), 72 states have call successors, (72), 24 states have call predecessors, (72), 25 states have return successors, (75), 68 states have call predecessors, (75), 69 states have call successors, (75) [2022-11-25 17:28:56,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 699 transitions. [2022-11-25 17:28:56,474 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 699 transitions. Word has length 125 [2022-11-25 17:28:56,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:28:56,475 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 699 transitions. [2022-11-25 17:28:56,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-25 17:28:56,475 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 699 transitions. [2022-11-25 17:28:56,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-25 17:28:56,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:28:56,479 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:28:56,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:28:56,479 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:28:56,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:28:56,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1927742638, now seen corresponding path program 1 times [2022-11-25 17:28:56,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:28:56,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146640740] [2022-11-25 17:28:56,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:28:56,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:28:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:56,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:28:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:56,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:28:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:56,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:28:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:56,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:28:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:56,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 17:28:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:56,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 17:28:56,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:56,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 17:28:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:56,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-25 17:28:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:56,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-25 17:28:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:56,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-25 17:28:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:56,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-25 17:28:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:56,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-25 17:28:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:56,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-25 17:28:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:56,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-25 17:28:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:56,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-25 17:28:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:56,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-25 17:28:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:56,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-25 17:28:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:56,769 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-25 17:28:56,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:28:56,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146640740] [2022-11-25 17:28:56,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146640740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:28:56,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:28:56,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 17:28:56,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406810122] [2022-11-25 17:28:56,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:28:56,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:28:56,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:28:56,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:28:56,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:28:56,773 INFO L87 Difference]: Start difference. First operand 449 states and 699 transitions. Second operand has 9 states, 8 states have (on average 11.25) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-25 17:28:59,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:28:59,209 INFO L93 Difference]: Finished difference Result 999 states and 1580 transitions. [2022-11-25 17:28:59,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:28:59,210 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.25) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 145 [2022-11-25 17:28:59,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:28:59,214 INFO L225 Difference]: With dead ends: 999 [2022-11-25 17:28:59,214 INFO L226 Difference]: Without dead ends: 573 [2022-11-25 17:28:59,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-25 17:28:59,216 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 1393 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 2466 mSolverCounterSat, 499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 2965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 2466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:28:59,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 1192 Invalid, 2965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [499 Valid, 2466 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-25 17:28:59,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-11-25 17:28:59,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 451. [2022-11-25 17:28:59,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 352 states have (on average 1.5710227272727273) internal successors, (553), 358 states have internal predecessors, (553), 72 states have call successors, (72), 24 states have call predecessors, (72), 26 states have return successors, (77), 68 states have call predecessors, (77), 69 states have call successors, (77) [2022-11-25 17:28:59,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 702 transitions. [2022-11-25 17:28:59,290 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 702 transitions. Word has length 145 [2022-11-25 17:28:59,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:28:59,291 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 702 transitions. [2022-11-25 17:28:59,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.25) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-25 17:28:59,291 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 702 transitions. [2022-11-25 17:28:59,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-25 17:28:59,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:28:59,295 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:28:59,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:28:59,295 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:28:59,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:28:59,296 INFO L85 PathProgramCache]: Analyzing trace with hash 638647129, now seen corresponding path program 1 times [2022-11-25 17:28:59,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:28:59,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456971482] [2022-11-25 17:28:59,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:28:59,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:28:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:59,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:28:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:59,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:28:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:59,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:28:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:59,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:28:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:59,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 17:28:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:59,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 17:28:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:59,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 17:28:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:59,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 17:28:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:59,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-25 17:28:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:59,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 17:28:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:59,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-25 17:28:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:59,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-25 17:28:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:59,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-25 17:28:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:59,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-25 17:28:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:28:59,623 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:28:59,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:28:59,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456971482] [2022-11-25 17:28:59,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456971482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:28:59,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:28:59,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-25 17:28:59,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332487019] [2022-11-25 17:28:59,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:28:59,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:28:59,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:28:59,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:28:59,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:28:59,626 INFO L87 Difference]: Start difference. First operand 451 states and 702 transitions. Second operand has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-25 17:29:02,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:02,890 INFO L93 Difference]: Finished difference Result 997 states and 1575 transitions. [2022-11-25 17:29:02,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:29:02,891 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 127 [2022-11-25 17:29:02,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:02,896 INFO L225 Difference]: With dead ends: 997 [2022-11-25 17:29:02,896 INFO L226 Difference]: Without dead ends: 573 [2022-11-25 17:29:02,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-25 17:29:02,901 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 1550 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 4084 mSolverCounterSat, 541 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 4625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 541 IncrementalHoareTripleChecker+Valid, 4084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:02,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 1555 Invalid, 4625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [541 Valid, 4084 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-25 17:29:02,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-11-25 17:29:02,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 451. [2022-11-25 17:29:02,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 352 states have (on average 1.5710227272727273) internal successors, (553), 358 states have internal predecessors, (553), 72 states have call successors, (72), 24 states have call predecessors, (72), 26 states have return successors, (76), 68 states have call predecessors, (76), 69 states have call successors, (76) [2022-11-25 17:29:02,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 701 transitions. [2022-11-25 17:29:02,950 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 701 transitions. Word has length 127 [2022-11-25 17:29:02,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:02,950 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 701 transitions. [2022-11-25 17:29:02,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-25 17:29:02,951 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 701 transitions. [2022-11-25 17:29:02,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-25 17:29:02,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:02,954 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:02,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:29:02,954 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:02,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:02,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1660844141, now seen corresponding path program 1 times [2022-11-25 17:29:02,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:02,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35350305] [2022-11-25 17:29:02,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:02,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:03,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:03,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:29:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:03,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:29:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:03,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:03,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 17:29:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:03,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 17:29:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:03,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 17:29:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:03,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 17:29:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:03,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-25 17:29:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:03,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-25 17:29:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:03,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-25 17:29:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:03,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-25 17:29:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:03,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-25 17:29:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:03,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-25 17:29:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:03,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-25 17:29:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:03,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-25 17:29:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:03,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-25 17:29:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:03,261 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-25 17:29:03,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:03,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35350305] [2022-11-25 17:29:03,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35350305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:03,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:03,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-25 17:29:03,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635407703] [2022-11-25 17:29:03,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:03,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:29:03,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:03,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:29:03,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:29:03,264 INFO L87 Difference]: Start difference. First operand 451 states and 701 transitions. Second operand has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-25 17:29:06,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:06,500 INFO L93 Difference]: Finished difference Result 999 states and 1581 transitions. [2022-11-25 17:29:06,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:29:06,507 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 147 [2022-11-25 17:29:06,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:06,512 INFO L225 Difference]: With dead ends: 999 [2022-11-25 17:29:06,513 INFO L226 Difference]: Without dead ends: 575 [2022-11-25 17:29:06,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-25 17:29:06,519 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 1536 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 4191 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 4722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 4191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:06,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 1557 Invalid, 4722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 4191 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-25 17:29:06,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-11-25 17:29:06,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 453. [2022-11-25 17:29:06,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 353 states have (on average 1.5694050991501416) internal successors, (554), 360 states have internal predecessors, (554), 72 states have call successors, (72), 24 states have call predecessors, (72), 27 states have return successors, (81), 68 states have call predecessors, (81), 69 states have call successors, (81) [2022-11-25 17:29:06,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 707 transitions. [2022-11-25 17:29:06,566 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 707 transitions. Word has length 147 [2022-11-25 17:29:06,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:06,568 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 707 transitions. [2022-11-25 17:29:06,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-25 17:29:06,568 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 707 transitions. [2022-11-25 17:29:06,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-25 17:29:06,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:06,572 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:06,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:29:06,572 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:06,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:06,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1639873244, now seen corresponding path program 1 times [2022-11-25 17:29:06,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:06,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090900693] [2022-11-25 17:29:06,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:06,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:29:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:29:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 17:29:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 17:29:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 17:29:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 17:29:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-25 17:29:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 17:29:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-25 17:29:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-25 17:29:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-25 17:29:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-25 17:29:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 17:29:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-25 17:29:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,931 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-25 17:29:06,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:06,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090900693] [2022-11-25 17:29:06,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090900693] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:29:06,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285928534] [2022-11-25 17:29:06,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:06,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:29:06,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:29:06,935 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:29:06,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 17:29:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:29:07,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:29:07,333 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-25 17:29:07,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:29:07,447 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-25 17:29:07,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285928534] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:29:07,448 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:29:07,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2022-11-25 17:29:07,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923555459] [2022-11-25 17:29:07,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:29:07,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 17:29:07,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:07,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 17:29:07,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-25 17:29:07,453 INFO L87 Difference]: Start difference. First operand 453 states and 707 transitions. Second operand has 15 states, 14 states have (on average 11.142857142857142) internal successors, (156), 11 states have internal predecessors, (156), 4 states have call successors, (42), 6 states have call predecessors, (42), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2022-11-25 17:29:12,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:12,177 INFO L93 Difference]: Finished difference Result 1858 states and 3139 transitions. [2022-11-25 17:29:12,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-25 17:29:12,177 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 11.142857142857142) internal successors, (156), 11 states have internal predecessors, (156), 4 states have call successors, (42), 6 states have call predecessors, (42), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) Word has length 148 [2022-11-25 17:29:12,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:12,186 INFO L225 Difference]: With dead ends: 1858 [2022-11-25 17:29:12,186 INFO L226 Difference]: Without dead ends: 1436 [2022-11-25 17:29:12,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-11-25 17:29:12,189 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 3656 mSDsluCounter, 3242 mSDsCounter, 0 mSdLazyCounter, 5498 mSolverCounterSat, 1356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3658 SdHoareTripleChecker+Valid, 3643 SdHoareTripleChecker+Invalid, 6854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1356 IncrementalHoareTripleChecker+Valid, 5498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:12,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3658 Valid, 3643 Invalid, 6854 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1356 Valid, 5498 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-25 17:29:12,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2022-11-25 17:29:12,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 871. [2022-11-25 17:29:12,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 692 states have (on average 1.6184971098265897) internal successors, (1120), 699 states have internal predecessors, (1120), 151 states have call successors, (151), 24 states have call predecessors, (151), 27 states have return successors, (170), 147 states have call predecessors, (170), 148 states have call successors, (170) [2022-11-25 17:29:12,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1441 transitions. [2022-11-25 17:29:12,294 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1441 transitions. Word has length 148 [2022-11-25 17:29:12,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:12,294 INFO L495 AbstractCegarLoop]: Abstraction has 871 states and 1441 transitions. [2022-11-25 17:29:12,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 11.142857142857142) internal successors, (156), 11 states have internal predecessors, (156), 4 states have call successors, (42), 6 states have call predecessors, (42), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2022-11-25 17:29:12,295 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1441 transitions. [2022-11-25 17:29:12,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-25 17:29:12,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:12,301 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:12,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:29:12,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66251b7-84ed-4fd0-afe1-58bcff61dd97/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 17:29:12,507 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:12,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:12,508 INFO L85 PathProgramCache]: Analyzing trace with hash 232108188, now seen corresponding path program 1 times [2022-11-25 17:29:12,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:12,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315478161] [2022-11-25 17:29:12,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:12,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:12,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:12,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:29:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:12,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:29:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:12,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:12,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 17:29:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:12,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 17:29:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:12,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 17:29:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:12,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 17:29:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:12,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-25 17:29:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:12,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-25 17:29:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:12,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 17:29:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:12,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-25 17:29:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:12,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-25 17:29:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:12,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-25 17:29:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:12,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-25 17:29:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:12,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-25 17:29:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:12,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-25 17:29:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:12,661 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-25 17:29:12,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:12,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315478161] [2022-11-25 17:29:12,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315478161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:12,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:12,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:29:12,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017130670] [2022-11-25 17:29:12,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:12,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:29:12,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:12,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:29:12,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:29:12,664 INFO L87 Difference]: Start difference. First operand 871 states and 1441 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 17:29:14,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:14,795 INFO L93 Difference]: Finished difference Result 2184 states and 3707 transitions. [2022-11-25 17:29:14,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:29:14,796 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 151 [2022-11-25 17:29:14,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:14,809 INFO L225 Difference]: With dead ends: 2184 [2022-11-25 17:29:14,809 INFO L226 Difference]: Without dead ends: 1391 [2022-11-25 17:29:14,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:29:14,813 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 1373 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 562 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 2062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 562 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:14,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1391 Valid, 1039 Invalid, 2062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [562 Valid, 1500 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-25 17:29:14,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2022-11-25 17:29:14,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1261. [2022-11-25 17:29:14,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 1003 states have (on average 1.6350947158524427) internal successors, (1640), 1010 states have internal predecessors, (1640), 230 states have call successors, (230), 24 states have call predecessors, (230), 27 states have return successors, (259), 226 states have call predecessors, (259), 227 states have call successors, (259) [2022-11-25 17:29:14,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 2129 transitions. [2022-11-25 17:29:14,993 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 2129 transitions. Word has length 151 [2022-11-25 17:29:14,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:14,994 INFO L495 AbstractCegarLoop]: Abstraction has 1261 states and 2129 transitions. [2022-11-25 17:29:14,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 17:29:14,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 2129 transitions. [2022-11-25 17:29:15,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-25 17:29:15,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:15,004 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:15,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:29:15,004 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:15,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:15,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1615411230, now seen corresponding path program 1 times [2022-11-25 17:29:15,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:15,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944559067] [2022-11-25 17:29:15,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:15,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:29:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:29:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 17:29:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 17:29:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 17:29:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 17:29:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-25 17:29:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-25 17:29:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-25 17:29:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-25 17:29:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-25 17:29:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 17:29:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,156 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 17:29:15,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:15,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944559067] [2022-11-25 17:29:15,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944559067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:15,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:15,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:29:15,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615868170] [2022-11-25 17:29:15,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:15,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:29:15,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:15,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:29:15,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:29:15,159 INFO L87 Difference]: Start difference. First operand 1261 states and 2129 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 17:29:17,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:17,259 INFO L93 Difference]: Finished difference Result 3158 states and 5416 transitions. [2022-11-25 17:29:17,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:29:17,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 133 [2022-11-25 17:29:17,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:17,271 INFO L225 Difference]: With dead ends: 3158 [2022-11-25 17:29:17,272 INFO L226 Difference]: Without dead ends: 2028 [2022-11-25 17:29:17,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:29:17,277 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 1374 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 579 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1392 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 2034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 579 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:17,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1392 Valid, 996 Invalid, 2034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [579 Valid, 1455 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-25 17:29:17,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2022-11-25 17:29:17,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 1898. [2022-11-25 17:29:17,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1898 states, 1521 states have (on average 1.6423405654174885) internal successors, (2498), 1528 states have internal predecessors, (2498), 349 states have call successors, (349), 24 states have call predecessors, (349), 27 states have return successors, (378), 345 states have call predecessors, (378), 346 states have call successors, (378) [2022-11-25 17:29:17,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 3225 transitions. [2022-11-25 17:29:17,540 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 3225 transitions. Word has length 133 [2022-11-25 17:29:17,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:17,541 INFO L495 AbstractCegarLoop]: Abstraction has 1898 states and 3225 transitions. [2022-11-25 17:29:17,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 17:29:17,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 3225 transitions. [2022-11-25 17:29:17,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-25 17:29:17,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:17,552 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:17,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:29:17,553 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:17,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:17,553 INFO L85 PathProgramCache]: Analyzing trace with hash 471932496, now seen corresponding path program 1 times [2022-11-25 17:29:17,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:17,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744724125] [2022-11-25 17:29:17,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:17,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:29:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:29:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 17:29:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 17:29:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 17:29:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-25 17:29:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-25 17:29:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-25 17:29:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-25 17:29:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-25 17:29:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-25 17:29:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-25 17:29:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,683 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 17:29:17,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:17,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744724125] [2022-11-25 17:29:17,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744724125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:17,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:17,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:29:17,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716777130] [2022-11-25 17:29:17,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:17,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:29:17,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:17,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:29:17,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:29:17,686 INFO L87 Difference]: Start difference. First operand 1898 states and 3225 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 17:29:19,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:19,770 INFO L93 Difference]: Finished difference Result 4638 states and 8027 transitions. [2022-11-25 17:29:19,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:29:19,770 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2022-11-25 17:29:19,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:19,788 INFO L225 Difference]: With dead ends: 4638 [2022-11-25 17:29:19,789 INFO L226 Difference]: Without dead ends: 3006 [2022-11-25 17:29:19,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:29:19,795 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 1375 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 558 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 2026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 558 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:19,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1393 Valid, 996 Invalid, 2026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [558 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-25 17:29:19,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2022-11-25 17:29:20,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 2876. [2022-11-25 17:29:20,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2876 states, 2337 states have (on average 1.6482670089858793) internal successors, (3852), 2344 states have internal predecessors, (3852), 511 states have call successors, (511), 24 states have call predecessors, (511), 27 states have return successors, (556), 507 states have call predecessors, (556), 508 states have call successors, (556) [2022-11-25 17:29:20,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2876 states to 2876 states and 4919 transitions. [2022-11-25 17:29:20,244 INFO L78 Accepts]: Start accepts. Automaton has 2876 states and 4919 transitions. Word has length 134 [2022-11-25 17:29:20,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:20,244 INFO L495 AbstractCegarLoop]: Abstraction has 2876 states and 4919 transitions. [2022-11-25 17:29:20,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 17:29:20,245 INFO L276 IsEmpty]: Start isEmpty. Operand 2876 states and 4919 transitions. [2022-11-25 17:29:20,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-25 17:29:20,260 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:20,260 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:20,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 17:29:20,261 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:20,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:20,261 INFO L85 PathProgramCache]: Analyzing trace with hash 287501753, now seen corresponding path program 1 times [2022-11-25 17:29:20,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:20,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140343465] [2022-11-25 17:29:20,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:20,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:20,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:20,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:29:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:20,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:29:20,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:20,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:20,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 17:29:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:20,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 17:29:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:20,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-25 17:29:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:20,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 17:29:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:20,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-25 17:29:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:20,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 17:29:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:20,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-25 17:29:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:20,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-25 17:29:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:20,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-25 17:29:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:20,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-25 17:29:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:20,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-25 17:29:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:20,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-25 17:29:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:20,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-25 17:29:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:20,402 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-25 17:29:20,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:20,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140343465] [2022-11-25 17:29:20,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140343465] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:20,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:20,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:29:20,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727164895] [2022-11-25 17:29:20,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:20,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:29:20,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:20,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:29:20,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:29:20,406 INFO L87 Difference]: Start difference. First operand 2876 states and 4919 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 17:29:22,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:22,651 INFO L93 Difference]: Finished difference Result 6977 states and 12162 transitions. [2022-11-25 17:29:22,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:29:22,651 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 154 [2022-11-25 17:29:22,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:22,675 INFO L225 Difference]: With dead ends: 6977 [2022-11-25 17:29:22,675 INFO L226 Difference]: Without dead ends: 4586 [2022-11-25 17:29:22,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:29:22,684 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 1370 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 1457 mSolverCounterSat, 558 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 558 IncrementalHoareTripleChecker+Valid, 1457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:22,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1389 Valid, 992 Invalid, 2015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [558 Valid, 1457 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-25 17:29:22,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4586 states. [2022-11-25 17:29:23,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4586 to 4456. [2022-11-25 17:29:23,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4456 states, 3672 states have (on average 1.6525054466230937) internal successors, (6068), 3679 states have internal predecessors, (6068), 756 states have call successors, (756), 24 states have call predecessors, (756), 27 states have return successors, (827), 752 states have call predecessors, (827), 753 states have call successors, (827) [2022-11-25 17:29:23,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4456 states to 4456 states and 7651 transitions. [2022-11-25 17:29:23,234 INFO L78 Accepts]: Start accepts. Automaton has 4456 states and 7651 transitions. Word has length 154 [2022-11-25 17:29:23,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:23,234 INFO L495 AbstractCegarLoop]: Abstraction has 4456 states and 7651 transitions. [2022-11-25 17:29:23,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 17:29:23,235 INFO L276 IsEmpty]: Start isEmpty. Operand 4456 states and 7651 transitions. [2022-11-25 17:29:23,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-25 17:29:23,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:23,253 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:23,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 17:29:23,253 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:23,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:23,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1114240742, now seen corresponding path program 1 times [2022-11-25 17:29:23,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:23,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175190676] [2022-11-25 17:29:23,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:23,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:23,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:23,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:29:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:23,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:29:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:23,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:23,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 17:29:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:23,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 17:29:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:23,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-25 17:29:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:23,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 17:29:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:23,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-25 17:29:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:23,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-25 17:29:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:23,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-25 17:29:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:23,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-25 17:29:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:23,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-25 17:29:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:23,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-25 17:29:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:23,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 17:29:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:23,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-25 17:29:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:23,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-25 17:29:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:23,407 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-25 17:29:23,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:23,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175190676] [2022-11-25 17:29:23,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175190676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:23,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:23,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:29:23,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896970250] [2022-11-25 17:29:23,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:23,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:29:23,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:23,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:29:23,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:29:23,410 INFO L87 Difference]: Start difference. First operand 4456 states and 7651 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 17:29:25,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:25,897 INFO L93 Difference]: Finished difference Result 11148 states and 19491 transitions. [2022-11-25 17:29:25,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:29:25,898 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 155 [2022-11-25 17:29:25,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:25,942 INFO L225 Difference]: With dead ends: 11148 [2022-11-25 17:29:25,942 INFO L226 Difference]: Without dead ends: 7429 [2022-11-25 17:29:25,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:29:25,955 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 1362 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 2055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 549 IncrementalHoareTripleChecker+Valid, 1506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:25,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1380 Valid, 1058 Invalid, 2055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [549 Valid, 1506 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-25 17:29:25,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7429 states. [2022-11-25 17:29:26,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7429 to 7299. [2022-11-25 17:29:26,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7299 states, 6022 states have (on average 1.6484556625705746) internal successors, (9927), 6029 states have internal predecessors, (9927), 1249 states have call successors, (1249), 24 states have call predecessors, (1249), 27 states have return successors, (1364), 1245 states have call predecessors, (1364), 1246 states have call successors, (1364) [2022-11-25 17:29:26,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7299 states to 7299 states and 12540 transitions. [2022-11-25 17:29:26,849 INFO L78 Accepts]: Start accepts. Automaton has 7299 states and 12540 transitions. Word has length 155 [2022-11-25 17:29:26,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:26,850 INFO L495 AbstractCegarLoop]: Abstraction has 7299 states and 12540 transitions. [2022-11-25 17:29:26,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 17:29:26,850 INFO L276 IsEmpty]: Start isEmpty. Operand 7299 states and 12540 transitions. [2022-11-25 17:29:26,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-25 17:29:26,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:26,877 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:26,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 17:29:26,877 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:26,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:26,878 INFO L85 PathProgramCache]: Analyzing trace with hash -449364387, now seen corresponding path program 1 times [2022-11-25 17:29:26,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:26,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171002785] [2022-11-25 17:29:26,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:26,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:29:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:29:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 17:29:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 17:29:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 17:29:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-25 17:29:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-25 17:29:27,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-25 17:29:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 17:29:27,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-25 17:29:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-25 17:29:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,013 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 17:29:27,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:27,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171002785] [2022-11-25 17:29:27,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171002785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:27,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:27,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:29:27,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153843912] [2022-11-25 17:29:27,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:27,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:29:27,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:27,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:29:27,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:29:27,018 INFO L87 Difference]: Start difference. First operand 7299 states and 12540 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 17:29:29,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:29,924 INFO L93 Difference]: Finished difference Result 18568 states and 32455 transitions. [2022-11-25 17:29:29,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:29:29,926 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 137 [2022-11-25 17:29:29,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:30,000 INFO L225 Difference]: With dead ends: 18568 [2022-11-25 17:29:30,000 INFO L226 Difference]: Without dead ends: 12408 [2022-11-25 17:29:30,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:29:30,019 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 1367 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 570 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1385 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 2032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 570 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:30,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1385 Valid, 996 Invalid, 2032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [570 Valid, 1462 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-25 17:29:30,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12408 states. [2022-11-25 17:29:31,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12408 to 12278. [2022-11-25 17:29:31,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12278 states, 10179 states have (on average 1.6482955103644759) internal successors, (16778), 10186 states have internal predecessors, (16778), 2071 states have call successors, (2071), 24 states have call predecessors, (2071), 27 states have return successors, (2264), 2067 states have call predecessors, (2264), 2068 states have call successors, (2264) [2022-11-25 17:29:31,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12278 states to 12278 states and 21113 transitions. [2022-11-25 17:29:31,324 INFO L78 Accepts]: Start accepts. Automaton has 12278 states and 21113 transitions. Word has length 137 [2022-11-25 17:29:31,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:31,325 INFO L495 AbstractCegarLoop]: Abstraction has 12278 states and 21113 transitions. [2022-11-25 17:29:31,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 17:29:31,325 INFO L276 IsEmpty]: Start isEmpty. Operand 12278 states and 21113 transitions. [2022-11-25 17:29:31,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-25 17:29:31,367 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:31,368 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:31,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 17:29:31,368 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:31,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:31,369 INFO L85 PathProgramCache]: Analyzing trace with hash -786842926, now seen corresponding path program 1 times [2022-11-25 17:29:31,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:31,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069600137] [2022-11-25 17:29:31,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:31,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:31,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:31,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:29:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:31,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:29:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:31,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:31,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 17:29:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:31,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 17:29:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:31,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 17:29:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:31,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-25 17:29:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:31,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 17:29:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:31,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-25 17:29:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:31,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-25 17:29:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:31,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-25 17:29:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:31,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-25 17:29:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:31,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-25 17:29:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:31,519 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 17:29:31,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:31,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069600137] [2022-11-25 17:29:31,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069600137] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:31,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:31,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:29:31,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327967763] [2022-11-25 17:29:31,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:31,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:29:31,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:31,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:29:31,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:29:31,524 INFO L87 Difference]: Start difference. First operand 12278 states and 21113 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 17:29:35,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:35,223 INFO L93 Difference]: Finished difference Result 29526 states and 51315 transitions. [2022-11-25 17:29:35,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:29:35,223 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 138 [2022-11-25 17:29:35,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:35,301 INFO L225 Difference]: With dead ends: 29526 [2022-11-25 17:29:35,301 INFO L226 Difference]: Without dead ends: 19361 [2022-11-25 17:29:35,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:29:35,326 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 1367 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 566 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1385 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 2027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 566 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:35,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1385 Valid, 976 Invalid, 2027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [566 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-25 17:29:35,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19361 states. [2022-11-25 17:29:37,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19361 to 19231. [2022-11-25 17:29:37,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19231 states, 15929 states have (on average 1.6227007345093853) internal successors, (25848), 15936 states have internal predecessors, (25848), 3274 states have call successors, (3274), 24 states have call predecessors, (3274), 27 states have return successors, (3611), 3270 states have call predecessors, (3611), 3271 states have call successors, (3611) [2022-11-25 17:29:37,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19231 states to 19231 states and 32733 transitions. [2022-11-25 17:29:37,772 INFO L78 Accepts]: Start accepts. Automaton has 19231 states and 32733 transitions. Word has length 138 [2022-11-25 17:29:37,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:37,772 INFO L495 AbstractCegarLoop]: Abstraction has 19231 states and 32733 transitions. [2022-11-25 17:29:37,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 17:29:37,773 INFO L276 IsEmpty]: Start isEmpty. Operand 19231 states and 32733 transitions. [2022-11-25 17:29:37,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-25 17:29:37,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:37,803 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:37,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 17:29:37,804 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:37,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:37,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1859433404, now seen corresponding path program 1 times [2022-11-25 17:29:37,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:37,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880053279] [2022-11-25 17:29:37,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:37,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:37,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:37,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:29:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:37,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:29:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:37,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:37,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 17:29:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:37,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 17:29:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:37,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-25 17:29:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:37,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-25 17:29:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:37,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-25 17:29:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:37,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-25 17:29:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:37,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-25 17:29:37,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:37,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-25 17:29:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:37,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 17:29:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:37,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-25 17:29:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:37,925 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 17:29:37,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:37,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880053279] [2022-11-25 17:29:37,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880053279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:37,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:37,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:29:37,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911738642] [2022-11-25 17:29:37,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:37,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:29:37,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:37,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:29:37,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:29:37,930 INFO L87 Difference]: Start difference. First operand 19231 states and 32733 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 17:29:43,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:43,351 INFO L93 Difference]: Finished difference Result 50958 states and 88233 transitions. [2022-11-25 17:29:43,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:29:43,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 139 [2022-11-25 17:29:43,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:43,483 INFO L225 Difference]: With dead ends: 50958 [2022-11-25 17:29:43,484 INFO L226 Difference]: Without dead ends: 34482 [2022-11-25 17:29:43,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:29:43,527 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 1362 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 571 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:43,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1381 Valid, 998 Invalid, 2048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [571 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-25 17:29:43,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34482 states. [2022-11-25 17:29:46,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34482 to 34352. [2022-11-25 17:29:46,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34352 states, 28600 states have (on average 1.6193706293706294) internal successors, (46314), 28607 states have internal predecessors, (46314), 5724 states have call successors, (5724), 24 states have call predecessors, (5724), 27 states have return successors, (6335), 5720 states have call predecessors, (6335), 5721 states have call successors, (6335) [2022-11-25 17:29:47,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34352 states to 34352 states and 58373 transitions. [2022-11-25 17:29:47,071 INFO L78 Accepts]: Start accepts. Automaton has 34352 states and 58373 transitions. Word has length 139 [2022-11-25 17:29:47,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:47,072 INFO L495 AbstractCegarLoop]: Abstraction has 34352 states and 58373 transitions. [2022-11-25 17:29:47,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 17:29:47,072 INFO L276 IsEmpty]: Start isEmpty. Operand 34352 states and 58373 transitions. [2022-11-25 17:29:47,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-25 17:29:47,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:47,125 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:47,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 17:29:47,126 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:47,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:47,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1411988610, now seen corresponding path program 1 times [2022-11-25 17:29:47,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:47,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838569860] [2022-11-25 17:29:47,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:47,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:47,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:47,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:29:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:47,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:29:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:47,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:47,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 17:29:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:47,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 17:29:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:47,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 17:29:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:47,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-25 17:29:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:47,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-25 17:29:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:47,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-25 17:29:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:47,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-25 17:29:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:47,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 17:29:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:47,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 17:29:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:47,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-25 17:29:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:47,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-25 17:29:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:47,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:29:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:47,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-25 17:29:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:47,291 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-25 17:29:47,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:47,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838569860] [2022-11-25 17:29:47,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838569860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:47,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:47,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:29:47,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203135589] [2022-11-25 17:29:47,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:47,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:29:47,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:47,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:29:47,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:29:47,295 INFO L87 Difference]: Start difference. First operand 34352 states and 58373 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 17:29:54,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:54,874 INFO L93 Difference]: Finished difference Result 93830 states and 161632 transitions. [2022-11-25 17:29:54,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:29:54,875 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 159 [2022-11-25 17:29:54,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:55,096 INFO L225 Difference]: With dead ends: 93830 [2022-11-25 17:29:55,097 INFO L226 Difference]: Without dead ends: 63149 [2022-11-25 17:29:55,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:29:55,170 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 1363 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 2018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:55,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1382 Valid, 999 Invalid, 2018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-25 17:29:55,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63149 states. [2022-11-25 17:30:01,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63149 to 63019. [2022-11-25 17:30:01,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63019 states, 52754 states have (on average 1.6150244531220381) internal successors, (85199), 52761 states have internal predecessors, (85199), 10237 states have call successors, (10237), 24 states have call predecessors, (10237), 27 states have return successors, (11380), 10233 states have call predecessors, (11380), 10234 states have call successors, (11380) [2022-11-25 17:30:01,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63019 states to 63019 states and 106816 transitions. [2022-11-25 17:30:01,586 INFO L78 Accepts]: Start accepts. Automaton has 63019 states and 106816 transitions. Word has length 159 [2022-11-25 17:30:01,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:30:01,586 INFO L495 AbstractCegarLoop]: Abstraction has 63019 states and 106816 transitions. [2022-11-25 17:30:01,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 17:30:01,587 INFO L276 IsEmpty]: Start isEmpty. Operand 63019 states and 106816 transitions. [2022-11-25 17:30:01,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-25 17:30:01,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:30:01,631 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:30:01,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 17:30:01,631 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:30:01,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:30:01,632 INFO L85 PathProgramCache]: Analyzing trace with hash -386328098, now seen corresponding path program 1 times [2022-11-25 17:30:01,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:30:01,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698483539] [2022-11-25 17:30:01,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:30:01,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:30:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:01,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:30:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:01,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:30:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:01,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:30:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:01,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:30:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:01,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 17:30:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:01,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 17:30:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:01,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 17:30:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:01,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-25 17:30:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:01,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-25 17:30:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:01,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-25 17:30:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:01,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-25 17:30:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:01,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-25 17:30:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:01,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-25 17:30:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:01,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-25 17:30:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:01,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-25 17:30:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:01,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-25 17:30:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:01,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-25 17:30:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:01,766 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-25 17:30:01,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:30:01,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698483539] [2022-11-25 17:30:01,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698483539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:30:01,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:30:01,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:30:01,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257308927] [2022-11-25 17:30:01,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:30:01,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:30:01,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:30:01,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:30:01,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:30:01,770 INFO L87 Difference]: Start difference. First operand 63019 states and 106816 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17)