./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product22.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_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/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_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/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_36414e8e-97f2-4a43-abbd-4b22b7733ae0/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 e61661fc2d58041f16237a6d2ff2f3d5f72c7660b85c9fdf3f096a51b709ec23 --- 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 18:04:52,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:04:52,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:04:52,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:04:52,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:04:52,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:04:52,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:04:52,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:04:52,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:04:52,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:04:52,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:04:52,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:04:52,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:04:52,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:04:52,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:04:52,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:04:52,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:04:52,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:04:52,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:04:52,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:04:52,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:04:52,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:04:52,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:04:52,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:04:52,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:04:52,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:04:52,404 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:04:52,405 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:04:52,406 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:04:52,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:04:52,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:04:52,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:04:52,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:04:52,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:04:52,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:04:52,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:04:52,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:04:52,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:04:52,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:04:52,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:04:52,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:04:52,421 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 18:04:52,459 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:04:52,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:04:52,467 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:04:52,467 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:04:52,468 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:04:52,469 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:04:52,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:04:52,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:04:52,471 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:04:52,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:04:52,472 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:04:52,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:04:52,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:04:52,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:04:52,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:04:52,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:04:52,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:04:52,475 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:04:52,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:04:52,475 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:04:52,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:04:52,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:04:52,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:04:52,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:04:52,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:04:52,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:04:52,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:04:52,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:04:52,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:04:52,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:04:52,479 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:04:52,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:04:52,480 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:04:52,480 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:04:52,480 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_36414e8e-97f2-4a43-abbd-4b22b7733ae0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e61661fc2d58041f16237a6d2ff2f3d5f72c7660b85c9fdf3f096a51b709ec23 [2022-11-25 18:04:52,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:04:52,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:04:52,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:04:52,898 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:04:52,899 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:04:52,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/product-lines/email_spec6_product22.cil.c [2022-11-25 18:04:56,888 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:04:57,344 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:04:57,345 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/sv-benchmarks/c/product-lines/email_spec6_product22.cil.c [2022-11-25 18:04:57,377 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/data/fc9bbe2f8/359297c0a5674eeea52d79b87a530228/FLAG8f652b801 [2022-11-25 18:04:57,400 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/data/fc9bbe2f8/359297c0a5674eeea52d79b87a530228 [2022-11-25 18:04:57,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:04:57,410 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:04:57,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:04:57,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:04:57,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:04:57,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:04:57" (1/1) ... [2022-11-25 18:04:57,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f91d2dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:57, skipping insertion in model container [2022-11-25 18:04:57,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:04:57" (1/1) ... [2022-11-25 18:04:57,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:04:57,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:04:58,015 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:04:58,020 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:04:58,027 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_36414e8e-97f2-4a43-abbd-4b22b7733ae0/sv-benchmarks/c/product-lines/email_spec6_product22.cil.c[21483,21496] [2022-11-25 18:04:58,282 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:04:58,284 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:04:58,287 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:04:58,303 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:04:58,307 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:04:58,317 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:04:58,319 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:04:58,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:04:58,347 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:04:58,422 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:04:58,427 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:04:58,430 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_36414e8e-97f2-4a43-abbd-4b22b7733ae0/sv-benchmarks/c/product-lines/email_spec6_product22.cil.c[21483,21496] [2022-11-25 18:04:58,500 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:04:58,501 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:04:58,503 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:04:58,522 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:04:58,524 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:04:58,531 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:04:58,545 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:04:58,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:04:58,592 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:04:58,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:58 WrapperNode [2022-11-25 18:04:58,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:04:58,594 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:04:58,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:04:58,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:04:58,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:58" (1/1) ... [2022-11-25 18:04:58,631 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:58" (1/1) ... [2022-11-25 18:04:58,695 INFO L138 Inliner]: procedures = 129, calls = 213, calls flagged for inlining = 58, calls inlined = 53, statements flattened = 1006 [2022-11-25 18:04:58,695 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:04:58,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:04:58,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:04:58,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:04:58,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:58" (1/1) ... [2022-11-25 18:04:58,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:58" (1/1) ... [2022-11-25 18:04:58,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:58" (1/1) ... [2022-11-25 18:04:58,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:58" (1/1) ... [2022-11-25 18:04:58,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:58" (1/1) ... [2022-11-25 18:04:58,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:58" (1/1) ... [2022-11-25 18:04:58,785 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:58" (1/1) ... [2022-11-25 18:04:58,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:58" (1/1) ... [2022-11-25 18:04:58,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:04:58,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:04:58,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:04:58,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:04:58,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:58" (1/1) ... [2022-11-25 18:04:58,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:04:58,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:58,856 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:04:58,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:04:58,910 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-25 18:04:58,910 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-25 18:04:58,910 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-25 18:04:58,911 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-25 18:04:58,911 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-25 18:04:58,912 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-25 18:04:58,912 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-25 18:04:58,912 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-25 18:04:58,912 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-25 18:04:58,912 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-25 18:04:58,913 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-25 18:04:58,913 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-25 18:04:58,914 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-25 18:04:58,914 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-25 18:04:58,915 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-25 18:04:58,916 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-25 18:04:58,916 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-25 18:04:58,916 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-25 18:04:58,916 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-25 18:04:58,917 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-25 18:04:58,917 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-25 18:04:58,917 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-25 18:04:58,917 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-25 18:04:58,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:04:58,918 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-25 18:04:58,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-25 18:04:58,918 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-25 18:04:58,918 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-25 18:04:58,919 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-25 18:04:58,920 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-25 18:04:58,920 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-25 18:04:58,920 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-25 18:04:58,921 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-25 18:04:58,921 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-25 18:04:58,921 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-25 18:04:58,922 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-25 18:04:58,922 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-25 18:04:58,923 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-25 18:04:58,924 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-25 18:04:58,924 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-25 18:04:58,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:04:58,924 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-25 18:04:58,925 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-25 18:04:58,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:04:58,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:04:59,250 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:04:59,253 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:05:00,252 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:05:00,266 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:05:00,266 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 18:05:00,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:05:00 BoogieIcfgContainer [2022-11-25 18:05:00,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:05:00,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:05:00,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:05:00,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:05:00,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:04:57" (1/3) ... [2022-11-25 18:05:00,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54eff8ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:05:00, skipping insertion in model container [2022-11-25 18:05:00,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:58" (2/3) ... [2022-11-25 18:05:00,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54eff8ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:05:00, skipping insertion in model container [2022-11-25 18:05:00,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:05:00" (3/3) ... [2022-11-25 18:05:00,282 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product22.cil.c [2022-11-25 18:05:00,308 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:05:00,309 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 18:05:00,386 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:05:00,395 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;@65e5f3dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:05:00,395 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 18:05:00,407 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 258 states have (on average 1.5155038759689923) internal successors, (391), 262 states have internal predecessors, (391), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-25 18:05:00,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-25 18:05:00,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:05:00,447 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:05:00,447 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:05:00,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:00,461 INFO L85 PathProgramCache]: Analyzing trace with hash -837891348, now seen corresponding path program 1 times [2022-11-25 18:05:00,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:00,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754618954] [2022-11-25 18:05:00,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:00,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:05:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:05:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:05:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 18:05:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 18:05:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 18:05:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 18:05:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 18:05:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 18:05:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-25 18:05:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-25 18:05:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-25 18:05:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-25 18:05:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-25 18:05:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-25 18:05:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:01,805 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-25 18:05:01,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:01,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754618954] [2022-11-25 18:05:01,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754618954] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:05:01,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051356283] [2022-11-25 18:05:01,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:01,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:01,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:05:01,817 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:05:01,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:05:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:02,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 1075 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 18:05:02,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:05:02,360 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-25 18:05:02,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:05:02,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051356283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:02,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:05:02,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-11-25 18:05:02,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860447819] [2022-11-25 18:05:02,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:02,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:05:02,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:02,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:05:02,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:05:02,418 INFO L87 Difference]: Start difference. First operand has 334 states, 258 states have (on average 1.5155038759689923) internal successors, (391), 262 states have internal predecessors, (391), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 18:05:02,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:05:02,496 INFO L93 Difference]: Finished difference Result 509 states and 744 transitions. [2022-11-25 18:05:02,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:05:02,499 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 114 [2022-11-25 18:05:02,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:05:02,517 INFO L225 Difference]: With dead ends: 509 [2022-11-25 18:05:02,517 INFO L226 Difference]: Without dead ends: 327 [2022-11-25 18:05:02,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 140 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 18:05:02,529 INFO L413 NwaCegarLoop]: 495 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, 495 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 18:05:02,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:05:02,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-11-25 18:05:02,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2022-11-25 18:05:02,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 252 states have (on average 1.507936507936508) internal successors, (380), 255 states have internal predecessors, (380), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-25 18:05:02,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 487 transitions. [2022-11-25 18:05:02,632 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 487 transitions. Word has length 114 [2022-11-25 18:05:02,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:05:02,634 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 487 transitions. [2022-11-25 18:05:02,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 18:05:02,634 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 487 transitions. [2022-11-25 18:05:02,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-25 18:05:02,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:05:02,641 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:05:02,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:05:02,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-25 18:05:02,851 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:05:02,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:02,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1242856840, now seen corresponding path program 1 times [2022-11-25 18:05:02,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:02,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715368981] [2022-11-25 18:05:02,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:02,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:03,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:05:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:03,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:05:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:03,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:05:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:03,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 18:05:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:03,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 18:05:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:03,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 18:05:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:03,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 18:05:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:03,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 18:05:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:03,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 18:05:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:03,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 18:05:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:03,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-25 18:05:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:03,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-25 18:05:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:03,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-25 18:05:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:03,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-25 18:05:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:03,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-25 18:05:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:03,418 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-25 18:05:03,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:03,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715368981] [2022-11-25 18:05:03,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715368981] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:05:03,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850904377] [2022-11-25 18:05:03,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:03,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:03,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:05:03,428 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:05:03,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 18:05:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:03,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 18:05:03,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:05:03,957 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-25 18:05:03,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:05:03,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850904377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:03,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:05:03,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-25 18:05:03,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17173486] [2022-11-25 18:05:03,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:03,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:05:03,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:03,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:05:03,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:05:03,963 INFO L87 Difference]: Start difference. First operand 327 states and 487 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 18:05:04,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:05:04,073 INFO L93 Difference]: Finished difference Result 499 states and 725 transitions. [2022-11-25 18:05:04,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:05:04,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 115 [2022-11-25 18:05:04,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:05:04,086 INFO L225 Difference]: With dead ends: 499 [2022-11-25 18:05:04,092 INFO L226 Difference]: Without dead ends: 330 [2022-11-25 18:05:04,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 140 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 18:05:04,102 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 1 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 968 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 18:05:04,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 968 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:05:04,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-11-25 18:05:04,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 329. [2022-11-25 18:05:04,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 254 states have (on average 1.5039370078740157) internal successors, (382), 257 states have internal predecessors, (382), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-25 18:05:04,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 489 transitions. [2022-11-25 18:05:04,165 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 489 transitions. Word has length 115 [2022-11-25 18:05:04,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:05:04,168 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 489 transitions. [2022-11-25 18:05:04,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 18:05:04,169 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 489 transitions. [2022-11-25 18:05:04,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-25 18:05:04,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:05:04,178 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:05:04,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:05:04,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:04,387 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:05:04,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:04,389 INFO L85 PathProgramCache]: Analyzing trace with hash 961162571, now seen corresponding path program 1 times [2022-11-25 18:05:04,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:04,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573225467] [2022-11-25 18:05:04,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:04,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:04,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:05:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:04,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:05:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:04,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:05:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:04,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 18:05:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:04,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 18:05:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:04,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 18:05:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:04,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-25 18:05:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:04,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 18:05:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:04,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-25 18:05:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:04,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 18:05:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:04,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 18:05:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:04,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-25 18:05:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:04,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-25 18:05:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:04,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-25 18:05:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:04,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-25 18:05:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:04,894 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-25 18:05:04,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:04,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573225467] [2022-11-25 18:05:04,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573225467] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:05:04,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976254168] [2022-11-25 18:05:04,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:04,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:04,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:05:04,906 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:05:04,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 18:05:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:05,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 1103 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:05:05,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:05:05,344 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-25 18:05:05,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:05:05,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976254168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:05,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:05:05,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-25 18:05:05,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545246755] [2022-11-25 18:05:05,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:05,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:05:05,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:05,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:05:05,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:05:05,353 INFO L87 Difference]: Start difference. First operand 329 states and 489 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 18:05:05,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:05:05,418 INFO L93 Difference]: Finished difference Result 693 states and 1045 transitions. [2022-11-25 18:05:05,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:05:05,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 124 [2022-11-25 18:05:05,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:05:05,429 INFO L225 Difference]: With dead ends: 693 [2022-11-25 18:05:05,430 INFO L226 Difference]: Without dead ends: 391 [2022-11-25 18:05:05,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 149 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 18:05:05,438 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 115 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 947 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 18:05:05,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 947 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:05:05,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-11-25 18:05:05,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 383. [2022-11-25 18:05:05,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 297 states have (on average 1.5218855218855218) internal successors, (452), 300 states have internal predecessors, (452), 65 states have call successors, (65), 20 states have call predecessors, (65), 20 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-25 18:05:05,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 581 transitions. [2022-11-25 18:05:05,472 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 581 transitions. Word has length 124 [2022-11-25 18:05:05,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:05:05,473 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 581 transitions. [2022-11-25 18:05:05,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 18:05:05,473 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 581 transitions. [2022-11-25 18:05:05,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-25 18:05:05,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:05:05,477 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:05:05,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:05:05,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:05,685 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:05:05,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:05,686 INFO L85 PathProgramCache]: Analyzing trace with hash -2046598277, now seen corresponding path program 1 times [2022-11-25 18:05:05,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:05,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514315906] [2022-11-25 18:05:05,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:05,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:05,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:05:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:05,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:05:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:05,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:05:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:05,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 18:05:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:05,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 18:05:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:05,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 18:05:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:05,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 18:05:05,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:05,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 18:05:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:06,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 18:05:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:06,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-25 18:05:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:06,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 18:05:06,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:06,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-25 18:05:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:06,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-25 18:05:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:06,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-25 18:05:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:06,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-25 18:05:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:06,049 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-25 18:05:06,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:06,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514315906] [2022-11-25 18:05:06,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514315906] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:05:06,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388457877] [2022-11-25 18:05:06,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:06,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:06,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:05:06,055 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:05:06,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 18:05:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:06,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 18:05:06,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:05:06,587 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 18:05:06,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:05:06,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388457877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:06,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:05:06,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-11-25 18:05:06,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614650728] [2022-11-25 18:05:06,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:06,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:05:06,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:06,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:05:06,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:05:06,593 INFO L87 Difference]: Start difference. First operand 383 states and 581 transitions. Second operand has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-25 18:05:06,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:05:06,703 INFO L93 Difference]: Finished difference Result 757 states and 1152 transitions. [2022-11-25 18:05:06,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:05:06,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 125 [2022-11-25 18:05:06,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:05:06,709 INFO L225 Difference]: With dead ends: 757 [2022-11-25 18:05:06,709 INFO L226 Difference]: Without dead ends: 385 [2022-11-25 18:05:06,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 148 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 18:05:06,717 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 133 mSDsluCounter, 1281 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1759 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 18:05:06,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1759 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:05:06,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-11-25 18:05:06,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2022-11-25 18:05:06,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 298 states have (on average 1.5201342281879195) internal successors, (453), 302 states have internal predecessors, (453), 65 states have call successors, (65), 20 states have call predecessors, (65), 21 states have return successors, (66), 64 states have call predecessors, (66), 64 states have call successors, (66) [2022-11-25 18:05:06,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 584 transitions. [2022-11-25 18:05:06,771 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 584 transitions. Word has length 125 [2022-11-25 18:05:06,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:05:06,771 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 584 transitions. [2022-11-25 18:05:06,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-25 18:05:06,772 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 584 transitions. [2022-11-25 18:05:06,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-25 18:05:06,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:05:06,784 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:05:06,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 18:05:06,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:06,992 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:05:06,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:06,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1442355528, now seen corresponding path program 1 times [2022-11-25 18:05:06,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:06,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276823548] [2022-11-25 18:05:06,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:06,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:07,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:05:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:07,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:05:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:07,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:05:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:07,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:05:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:07,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-25 18:05:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:07,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:05:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:07,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-25 18:05:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:07,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 18:05:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:07,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 18:05:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:07,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-25 18:05:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:07,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-25 18:05:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:07,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 18:05:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:07,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-25 18:05:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:07,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-25 18:05:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:07,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-25 18:05:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:07,377 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-25 18:05:07,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:07,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276823548] [2022-11-25 18:05:07,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276823548] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:05:07,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946968419] [2022-11-25 18:05:07,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:07,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:07,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:05:07,380 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:05:07,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 18:05:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:07,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 18:05:07,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:05:07,891 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 18:05:07,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:05:07,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946968419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:07,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:05:07,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-11-25 18:05:07,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135644982] [2022-11-25 18:05:07,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:07,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:05:07,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:07,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:05:07,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-11-25 18:05:07,894 INFO L87 Difference]: Start difference. First operand 385 states and 584 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-25 18:05:08,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:05:08,010 INFO L93 Difference]: Finished difference Result 759 states and 1157 transitions. [2022-11-25 18:05:08,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:05:08,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 126 [2022-11-25 18:05:08,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:05:08,016 INFO L225 Difference]: With dead ends: 759 [2022-11-25 18:05:08,016 INFO L226 Difference]: Without dead ends: 387 [2022-11-25 18:05:08,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:05:08,019 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 132 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:05:08,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1748 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:05:08,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-11-25 18:05:08,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2022-11-25 18:05:08,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 299 states have (on average 1.5183946488294315) internal successors, (454), 304 states have internal predecessors, (454), 65 states have call successors, (65), 20 states have call predecessors, (65), 22 states have return successors, (71), 64 states have call predecessors, (71), 64 states have call successors, (71) [2022-11-25 18:05:08,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 590 transitions. [2022-11-25 18:05:08,051 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 590 transitions. Word has length 126 [2022-11-25 18:05:08,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:05:08,052 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 590 transitions. [2022-11-25 18:05:08,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-25 18:05:08,052 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 590 transitions. [2022-11-25 18:05:08,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-25 18:05:08,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:05:08,055 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:05:08,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 18:05:08,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:08,267 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:05:08,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:08,268 INFO L85 PathProgramCache]: Analyzing trace with hash 133086659, now seen corresponding path program 1 times [2022-11-25 18:05:08,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:08,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342670117] [2022-11-25 18:05:08,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:08,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:08,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:05:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:08,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:05:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:08,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:05:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:08,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:05:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:08,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:05:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:08,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-25 18:05:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:08,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 18:05:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:08,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 18:05:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:08,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-25 18:05:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:08,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-25 18:05:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:08,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-25 18:05:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:08,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-25 18:05:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:08,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-25 18:05:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:08,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-25 18:05:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:08,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-25 18:05:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:08,530 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-25 18:05:08,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:08,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342670117] [2022-11-25 18:05:08,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342670117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:08,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:05:08,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 18:05:08,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442371863] [2022-11-25 18:05:08,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:08,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:05:08,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:08,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:05:08,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:05:08,533 INFO L87 Difference]: Start difference. First operand 387 states and 590 transitions. Second operand has 9 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-25 18:05:11,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:05:11,867 INFO L93 Difference]: Finished difference Result 926 states and 1420 transitions. [2022-11-25 18:05:11,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 18:05:11,868 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 127 [2022-11-25 18:05:11,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:05:11,873 INFO L225 Difference]: With dead ends: 926 [2022-11-25 18:05:11,873 INFO L226 Difference]: Without dead ends: 562 [2022-11-25 18:05:11,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 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 18:05:11,880 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 1157 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 2568 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 3049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 2568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:05:11,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 1044 Invalid, 3049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 2568 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-25 18:05:11,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-11-25 18:05:11,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 387. [2022-11-25 18:05:11,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 299 states have (on average 1.5183946488294315) internal successors, (454), 304 states have internal predecessors, (454), 65 states have call successors, (65), 20 states have call predecessors, (65), 22 states have return successors, (70), 64 states have call predecessors, (70), 64 states have call successors, (70) [2022-11-25 18:05:11,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 589 transitions. [2022-11-25 18:05:11,970 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 589 transitions. Word has length 127 [2022-11-25 18:05:11,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:05:11,971 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 589 transitions. [2022-11-25 18:05:11,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-25 18:05:11,971 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 589 transitions. [2022-11-25 18:05:11,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-25 18:05:11,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:05:11,975 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:05:11,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:05:11,975 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:05:11,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:11,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1356241106, now seen corresponding path program 2 times [2022-11-25 18:05:11,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:11,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848369427] [2022-11-25 18:05:11,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:11,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:12,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:05:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:12,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:05:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:12,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:05:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:12,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:05:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:12,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:05:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:12,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 18:05:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:12,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 18:05:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:12,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-25 18:05:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:12,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 18:05:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:12,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-25 18:05:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:12,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-25 18:05:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:12,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-25 18:05:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:12,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-25 18:05:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:12,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 18:05:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:12,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-25 18:05:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:12,319 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-25 18:05:12,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:12,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848369427] [2022-11-25 18:05:12,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848369427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:12,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:05:12,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 18:05:12,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068570780] [2022-11-25 18:05:12,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:12,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:05:12,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:12,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:05:12,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:05:12,324 INFO L87 Difference]: Start difference. First operand 387 states and 589 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, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-25 18:05:15,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:05:15,510 INFO L93 Difference]: Finished difference Result 928 states and 1423 transitions. [2022-11-25 18:05:15,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 18:05:15,511 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, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 128 [2022-11-25 18:05:15,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:05:15,516 INFO L225 Difference]: With dead ends: 928 [2022-11-25 18:05:15,516 INFO L226 Difference]: Without dead ends: 564 [2022-11-25 18:05:15,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-25 18:05:15,520 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 1152 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 2590 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 3061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 2590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-25 18:05:15,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 1044 Invalid, 3061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 2590 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-25 18:05:15,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-11-25 18:05:15,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 389. [2022-11-25 18:05:15,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 300 states have (on average 1.5166666666666666) internal successors, (455), 306 states have internal predecessors, (455), 65 states have call successors, (65), 20 states have call predecessors, (65), 23 states have return successors, (72), 64 states have call predecessors, (72), 64 states have call successors, (72) [2022-11-25 18:05:15,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 592 transitions. [2022-11-25 18:05:15,581 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 592 transitions. Word has length 128 [2022-11-25 18:05:15,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:05:15,581 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 592 transitions. [2022-11-25 18:05:15,582 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, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-25 18:05:15,582 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 592 transitions. [2022-11-25 18:05:15,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-25 18:05:15,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:05:15,586 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:05:15,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:05:15,587 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:05:15,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:15,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1805433256, now seen corresponding path program 1 times [2022-11-25 18:05:15,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:15,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144099369] [2022-11-25 18:05:15,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:15,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:15,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:05:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:15,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:05:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:15,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:05:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:15,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:05:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:15,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:05:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:15,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 18:05:15,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:15,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 18:05:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:16,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 18:05:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:16,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 18:05:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:16,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-25 18:05:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:16,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-25 18:05:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:16,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-25 18:05:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:16,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-25 18:05:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:16,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-25 18:05:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:16,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-25 18:05:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:16,039 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-25 18:05:16,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:16,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144099369] [2022-11-25 18:05:16,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144099369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:16,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:05:16,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-25 18:05:16,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386586794] [2022-11-25 18:05:16,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:16,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 18:05:16,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:16,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 18:05:16,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:05:16,043 INFO L87 Difference]: Start difference. First operand 389 states and 592 transitions. Second operand has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-25 18:05:20,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:05:20,416 INFO L93 Difference]: Finished difference Result 926 states and 1418 transitions. [2022-11-25 18:05:20,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 18:05:20,418 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 129 [2022-11-25 18:05:20,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:05:20,422 INFO L225 Difference]: With dead ends: 926 [2022-11-25 18:05:20,426 INFO L226 Difference]: Without dead ends: 564 [2022-11-25 18:05:20,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-25 18:05:20,431 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1284 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 4266 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 4783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 4266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-25 18:05:20,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1284 Valid, 1362 Invalid, 4783 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [517 Valid, 4266 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-25 18:05:20,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-11-25 18:05:20,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 389. [2022-11-25 18:05:20,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 300 states have (on average 1.5166666666666666) internal successors, (455), 306 states have internal predecessors, (455), 65 states have call successors, (65), 20 states have call predecessors, (65), 23 states have return successors, (71), 64 states have call predecessors, (71), 64 states have call successors, (71) [2022-11-25 18:05:20,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 591 transitions. [2022-11-25 18:05:20,495 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 591 transitions. Word has length 129 [2022-11-25 18:05:20,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:05:20,496 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 591 transitions. [2022-11-25 18:05:20,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-25 18:05:20,496 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 591 transitions. [2022-11-25 18:05:20,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-25 18:05:20,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:05:20,500 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:05:20,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:05:20,500 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:05:20,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:20,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2015086925, now seen corresponding path program 2 times [2022-11-25 18:05:20,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:20,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456823290] [2022-11-25 18:05:20,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:20,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:20,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:05:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:20,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:05:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:20,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:05:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:20,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:05:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:20,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:05:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:20,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 18:05:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:20,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 18:05:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:20,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 18:05:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:20,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-25 18:05:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:20,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 18:05:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:20,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 18:05:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:20,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-25 18:05:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:20,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-25 18:05:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:20,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-25 18:05:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:20,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-25 18:05:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:20,851 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-25 18:05:20,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:20,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456823290] [2022-11-25 18:05:20,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456823290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:20,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:05:20,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-25 18:05:20,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639942331] [2022-11-25 18:05:20,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:20,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 18:05:20,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:20,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 18:05:20,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:05:20,855 INFO L87 Difference]: Start difference. First operand 389 states and 591 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, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-25 18:05:25,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:05:25,250 INFO L93 Difference]: Finished difference Result 928 states and 1424 transitions. [2022-11-25 18:05:25,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 18:05:25,253 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, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 130 [2022-11-25 18:05:25,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:05:25,258 INFO L225 Difference]: With dead ends: 928 [2022-11-25 18:05:25,258 INFO L226 Difference]: Without dead ends: 566 [2022-11-25 18:05:25,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-25 18:05:25,263 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1279 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 4309 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 4815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 4309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-25 18:05:25,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1279 Valid, 1362 Invalid, 4815 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [506 Valid, 4309 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-25 18:05:25,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2022-11-25 18:05:25,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 391. [2022-11-25 18:05:25,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 301 states have (on average 1.5149501661129567) internal successors, (456), 308 states have internal predecessors, (456), 65 states have call successors, (65), 20 states have call predecessors, (65), 24 states have return successors, (76), 64 states have call predecessors, (76), 64 states have call successors, (76) [2022-11-25 18:05:25,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 597 transitions. [2022-11-25 18:05:25,321 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 597 transitions. Word has length 130 [2022-11-25 18:05:25,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:05:25,323 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 597 transitions. [2022-11-25 18:05:25,323 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, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-25 18:05:25,323 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 597 transitions. [2022-11-25 18:05:25,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-25 18:05:25,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:05:25,327 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:05:25,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:05:25,327 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:05:25,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:25,328 INFO L85 PathProgramCache]: Analyzing trace with hash 606209165, now seen corresponding path program 1 times [2022-11-25 18:05:25,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:25,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77477557] [2022-11-25 18:05:25,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:25,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:25,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:05:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:25,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:05:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:25,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:05:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:25,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:05:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:25,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:05:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:25,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 18:05:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:25,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 18:05:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:25,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 18:05:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:25,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-25 18:05:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:25,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 18:05:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:25,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-25 18:05:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:25,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-25 18:05:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:25,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-25 18:05:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:25,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-25 18:05:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:25,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 18:05:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:25,703 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-25 18:05:25,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:25,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77477557] [2022-11-25 18:05:25,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77477557] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:05:25,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627682015] [2022-11-25 18:05:25,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:25,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:25,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:05:25,707 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:05:25,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 18:05:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:26,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 1116 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:05:26,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:05:26,176 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 18:05:26,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:05:26,332 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 18:05:26,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627682015] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:05:26,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:05:26,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2022-11-25 18:05:26,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108820146] [2022-11-25 18:05:26,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:05:26,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 18:05:26,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:26,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 18:05:26,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-25 18:05:26,337 INFO L87 Difference]: Start difference. First operand 391 states and 597 transitions. Second operand has 15 states, 14 states have (on average 10.214285714285714) internal successors, (143), 11 states have internal predecessors, (143), 4 states have call successors, (35), 6 states have call predecessors, (35), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-25 18:05:32,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:05:32,232 INFO L93 Difference]: Finished difference Result 1657 states and 2732 transitions. [2022-11-25 18:05:32,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-25 18:05:32,233 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 10.214285714285714) internal successors, (143), 11 states have internal predecessors, (143), 4 states have call successors, (35), 6 states have call predecessors, (35), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) Word has length 131 [2022-11-25 18:05:32,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:05:32,245 INFO L225 Difference]: With dead ends: 1657 [2022-11-25 18:05:32,245 INFO L226 Difference]: Without dead ends: 1297 [2022-11-25 18:05:32,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-11-25 18:05:32,251 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 3530 mSDsluCounter, 2778 mSDsCounter, 0 mSdLazyCounter, 5040 mSolverCounterSat, 1363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3532 SdHoareTripleChecker+Valid, 3132 SdHoareTripleChecker+Invalid, 6403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1363 IncrementalHoareTripleChecker+Valid, 5040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:05:32,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3532 Valid, 3132 Invalid, 6403 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1363 Valid, 5040 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-25 18:05:32,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2022-11-25 18:05:32,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 744. [2022-11-25 18:05:32,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 590 states have (on average 1.571186440677966) internal successors, (927), 597 states have internal predecessors, (927), 129 states have call successors, (129), 20 states have call predecessors, (129), 24 states have return successors, (150), 128 states have call predecessors, (150), 128 states have call successors, (150) [2022-11-25 18:05:32,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1206 transitions. [2022-11-25 18:05:32,386 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1206 transitions. Word has length 131 [2022-11-25 18:05:32,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:05:32,387 INFO L495 AbstractCegarLoop]: Abstraction has 744 states and 1206 transitions. [2022-11-25 18:05:32,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 10.214285714285714) internal successors, (143), 11 states have internal predecessors, (143), 4 states have call successors, (35), 6 states have call predecessors, (35), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-25 18:05:32,388 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1206 transitions. [2022-11-25 18:05:32,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-25 18:05:32,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:05:32,393 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:05:32,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 18:05:32,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36414e8e-97f2-4a43-abbd-4b22b7733ae0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:32,609 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:05:32,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:32,610 INFO L85 PathProgramCache]: Analyzing trace with hash 2003089632, now seen corresponding path program 1 times [2022-11-25 18:05:32,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:32,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940907922] [2022-11-25 18:05:32,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:32,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:32,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:05:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:32,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:05:32,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:32,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:05:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:32,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:05:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:32,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:05:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:32,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 18:05:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:32,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 18:05:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:32,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 18:05:32,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:32,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-25 18:05:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:32,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-25 18:05:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:32,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-25 18:05:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:32,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-25 18:05:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:32,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 18:05:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:32,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-25 18:05:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:32,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-25 18:05:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:32,836 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 18:05:32,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:32,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940907922] [2022-11-25 18:05:32,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940907922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:32,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:05:32,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:05:32,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346113768] [2022-11-25 18:05:32,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:32,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:05:32,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:32,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:05:32,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:05:32,840 INFO L87 Difference]: Start difference. First operand 744 states and 1206 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 18:05:35,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:05:35,525 INFO L93 Difference]: Finished difference Result 1918 states and 3175 transitions. [2022-11-25 18:05:35,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:05:35,526 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 134 [2022-11-25 18:05:35,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:05:35,538 INFO L225 Difference]: With dead ends: 1918 [2022-11-25 18:05:35,539 INFO L226 Difference]: Without dead ends: 1252 [2022-11-25 18:05:35,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 18:05:35,544 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 1135 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 1568 mSolverCounterSat, 537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 2105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 1568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:05:35,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 926 Invalid, 2105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 1568 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-25 18:05:35,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2022-11-25 18:05:35,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1069. [2022-11-25 18:05:35,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 851 states have (on average 1.5887191539365453) internal successors, (1352), 858 states have internal predecessors, (1352), 193 states have call successors, (193), 20 states have call predecessors, (193), 24 states have return successors, (224), 192 states have call predecessors, (224), 192 states have call successors, (224) [2022-11-25 18:05:35,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1769 transitions. [2022-11-25 18:05:35,727 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1769 transitions. Word has length 134 [2022-11-25 18:05:35,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:05:35,728 INFO L495 AbstractCegarLoop]: Abstraction has 1069 states and 1769 transitions. [2022-11-25 18:05:35,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 18:05:35,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1769 transitions. [2022-11-25 18:05:35,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-25 18:05:35,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:05:35,737 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:05:35,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 18:05:35,737 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:05:35,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:35,738 INFO L85 PathProgramCache]: Analyzing trace with hash -725448431, now seen corresponding path program 1 times [2022-11-25 18:05:35,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:35,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797032436] [2022-11-25 18:05:35,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:35,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:35,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:05:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:35,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:05:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:35,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:05:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:35,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:05:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:35,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:05:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:35,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 18:05:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:35,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 18:05:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:35,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 18:05:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:35,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-25 18:05:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:35,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-25 18:05:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:35,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-25 18:05:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:35,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-25 18:05:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:35,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-25 18:05:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:35,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-25 18:05:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:35,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-25 18:05:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:35,926 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 18:05:35,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:35,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797032436] [2022-11-25 18:05:35,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797032436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:35,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:05:35,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:05:35,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923594558] [2022-11-25 18:05:35,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:35,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:05:35,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:35,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:05:35,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:05:35,930 INFO L87 Difference]: Start difference. First operand 1069 states and 1769 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 18:05:38,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:05:38,672 INFO L93 Difference]: Finished difference Result 2723 states and 4559 transitions. [2022-11-25 18:05:38,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:05:38,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 135 [2022-11-25 18:05:38,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:05:38,687 INFO L225 Difference]: With dead ends: 2723 [2022-11-25 18:05:38,687 INFO L226 Difference]: Without dead ends: 1785 [2022-11-25 18:05:38,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 18:05:38,694 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 1133 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 1549 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 2081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 1549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:05:38,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1148 Valid, 898 Invalid, 2081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 1549 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-25 18:05:38,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2022-11-25 18:05:38,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 1602. [2022-11-25 18:05:38,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1602 states, 1289 states have (on average 1.5965865011636928) internal successors, (2058), 1296 states have internal predecessors, (2058), 288 states have call successors, (288), 20 states have call predecessors, (288), 24 states have return successors, (319), 287 states have call predecessors, (319), 287 states have call successors, (319) [2022-11-25 18:05:38,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 2665 transitions. [2022-11-25 18:05:38,962 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 2665 transitions. Word has length 135 [2022-11-25 18:05:38,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:05:38,963 INFO L495 AbstractCegarLoop]: Abstraction has 1602 states and 2665 transitions. [2022-11-25 18:05:38,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 18:05:38,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 2665 transitions. [2022-11-25 18:05:38,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-25 18:05:38,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:05:38,978 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:05:38,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 18:05:38,979 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:05:38,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:38,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1399764622, now seen corresponding path program 1 times [2022-11-25 18:05:38,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:38,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043967017] [2022-11-25 18:05:38,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:38,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:39,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:05:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:05:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:05:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:05:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:05:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 18:05:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 18:05:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-25 18:05:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-25 18:05:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 18:05:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-25 18:05:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-25 18:05:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-25 18:05:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-25 18:05:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-25 18:05:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:39,190 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 18:05:39,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:39,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043967017] [2022-11-25 18:05:39,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043967017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:39,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:05:39,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:05:39,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684601843] [2022-11-25 18:05:39,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:39,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:05:39,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:39,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:05:39,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:05:39,195 INFO L87 Difference]: Start difference. First operand 1602 states and 2665 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 18:05:42,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:05:42,109 INFO L93 Difference]: Finished difference Result 3930 states and 6645 transitions. [2022-11-25 18:05:42,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:05:42,110 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2022-11-25 18:05:42,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:05:42,137 INFO L225 Difference]: With dead ends: 3930 [2022-11-25 18:05:42,138 INFO L226 Difference]: Without dead ends: 2594 [2022-11-25 18:05:42,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 18:05:42,152 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 1131 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1557 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 2080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 1557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:05:42,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1146 Valid, 871 Invalid, 2080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 1557 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-25 18:05:42,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2594 states. [2022-11-25 18:05:42,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2594 to 2411. [2022-11-25 18:05:42,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2411 states, 1975 states have (on average 1.6025316455696204) internal successors, (3165), 1982 states have internal predecessors, (3165), 411 states have call successors, (411), 20 states have call predecessors, (411), 24 states have return successors, (458), 410 states have call predecessors, (458), 410 states have call successors, (458) [2022-11-25 18:05:42,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 4034 transitions. [2022-11-25 18:05:42,589 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 4034 transitions. Word has length 136 [2022-11-25 18:05:42,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:05:42,590 INFO L495 AbstractCegarLoop]: Abstraction has 2411 states and 4034 transitions. [2022-11-25 18:05:42,590 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 18:05:42,590 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 4034 transitions. [2022-11-25 18:05:42,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-25 18:05:42,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:05:42,605 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:05:42,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 18:05:42,605 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:05:42,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:42,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1059729584, now seen corresponding path program 1 times [2022-11-25 18:05:42,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:42,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230827191] [2022-11-25 18:05:42,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:42,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:42,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:05:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:42,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:05:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:42,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:05:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:42,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:05:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:42,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:05:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:42,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 18:05:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:42,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-25 18:05:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:42,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 18:05:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:42,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 18:05:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:42,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-25 18:05:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:42,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-25 18:05:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:42,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-25 18:05:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:42,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-25 18:05:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:42,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 18:05:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:42,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-25 18:05:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:42,761 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 18:05:42,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:42,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230827191] [2022-11-25 18:05:42,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230827191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:42,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:05:42,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:05:42,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254747654] [2022-11-25 18:05:42,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:42,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:05:42,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:42,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:05:42,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:05:42,764 INFO L87 Difference]: Start difference. First operand 2411 states and 4034 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 18:05:45,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:05:45,797 INFO L93 Difference]: Finished difference Result 5814 states and 9905 transitions. [2022-11-25 18:05:45,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:05:45,798 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 137 [2022-11-25 18:05:45,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:05:45,825 INFO L225 Difference]: With dead ends: 5814 [2022-11-25 18:05:45,826 INFO L226 Difference]: Without dead ends: 3888 [2022-11-25 18:05:45,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 18:05:45,837 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 1129 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 533 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 2083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 533 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:05:45,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 871 Invalid, 2083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [533 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-25 18:05:45,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2022-11-25 18:05:46,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3705. [2022-11-25 18:05:46,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3705 states, 3090 states have (on average 1.606148867313916) internal successors, (4963), 3097 states have internal predecessors, (4963), 590 states have call successors, (590), 20 states have call predecessors, (590), 24 states have return successors, (663), 589 states have call predecessors, (663), 589 states have call successors, (663) [2022-11-25 18:05:46,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3705 states to 3705 states and 6216 transitions. [2022-11-25 18:05:46,492 INFO L78 Accepts]: Start accepts. Automaton has 3705 states and 6216 transitions. Word has length 137 [2022-11-25 18:05:46,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:05:46,493 INFO L495 AbstractCegarLoop]: Abstraction has 3705 states and 6216 transitions. [2022-11-25 18:05:46,493 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 18:05:46,494 INFO L276 IsEmpty]: Start isEmpty. Operand 3705 states and 6216 transitions. [2022-11-25 18:05:46,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-25 18:05:46,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:05:46,516 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:05:46,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 18:05:46,517 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:05:46,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:46,517 INFO L85 PathProgramCache]: Analyzing trace with hash 277368982, now seen corresponding path program 1 times [2022-11-25 18:05:46,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:46,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545953105] [2022-11-25 18:05:46,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:46,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:46,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:05:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:46,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:05:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:46,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:05:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:46,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:05:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:46,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:05:46,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:46,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 18:05:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:46,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-25 18:05:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:46,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 18:05:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:46,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-25 18:05:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:46,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-25 18:05:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:46,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-25 18:05:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:46,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-25 18:05:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:46,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-25 18:05:46,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:46,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-25 18:05:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:46,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-25 18:05:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:46,675 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 18:05:46,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:46,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545953105] [2022-11-25 18:05:46,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545953105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:46,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:05:46,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:05:46,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718600543] [2022-11-25 18:05:46,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:46,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:05:46,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:46,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:05:46,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:05:46,679 INFO L87 Difference]: Start difference. First operand 3705 states and 6216 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 18:05:49,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:05:49,907 INFO L93 Difference]: Finished difference Result 8917 states and 15269 transitions. [2022-11-25 18:05:49,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:05:49,908 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2022-11-25 18:05:49,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:05:49,950 INFO L225 Difference]: With dead ends: 8917 [2022-11-25 18:05:49,951 INFO L226 Difference]: Without dead ends: 6029 [2022-11-25 18:05:49,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 18:05:49,964 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 1127 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 1571 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 2099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 1571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:05:49,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 892 Invalid, 2099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 1571 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-25 18:05:49,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6029 states. [2022-11-25 18:05:50,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6029 to 5846. [2022-11-25 18:05:50,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5846 states, 4855 states have (on average 1.600205973223481) internal successors, (7769), 4862 states have internal predecessors, (7769), 966 states have call successors, (966), 20 states have call predecessors, (966), 24 states have return successors, (1083), 965 states have call predecessors, (1083), 965 states have call successors, (1083) [2022-11-25 18:05:50,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5846 states to 5846 states and 9818 transitions. [2022-11-25 18:05:50,973 INFO L78 Accepts]: Start accepts. Automaton has 5846 states and 9818 transitions. Word has length 138 [2022-11-25 18:05:50,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:05:50,974 INFO L495 AbstractCegarLoop]: Abstraction has 5846 states and 9818 transitions. [2022-11-25 18:05:50,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 18:05:50,975 INFO L276 IsEmpty]: Start isEmpty. Operand 5846 states and 9818 transitions. [2022-11-25 18:05:51,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-25 18:05:51,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:05:51,005 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:05:51,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 18:05:51,006 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:05:51,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:51,006 INFO L85 PathProgramCache]: Analyzing trace with hash 140546444, now seen corresponding path program 1 times [2022-11-25 18:05:51,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:51,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242089119] [2022-11-25 18:05:51,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:51,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:51,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:05:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:51,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:05:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:51,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:05:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:51,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:05:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:51,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:05:51,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:51,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 18:05:51,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:51,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 18:05:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:51,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-25 18:05:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:51,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-25 18:05:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:51,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 18:05:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:51,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-25 18:05:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:51,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-25 18:05:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:51,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-25 18:05:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:51,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-25 18:05:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:51,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-25 18:05:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:51,222 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 18:05:51,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:51,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242089119] [2022-11-25 18:05:51,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242089119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:51,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:05:51,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:05:51,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936485465] [2022-11-25 18:05:51,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:51,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:05:51,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:51,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:05:51,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:05:51,228 INFO L87 Difference]: Start difference. First operand 5846 states and 9818 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 18:05:54,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:05:54,783 INFO L93 Difference]: Finished difference Result 14534 states and 24882 transitions. [2022-11-25 18:05:54,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:05:54,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 139 [2022-11-25 18:05:54,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:05:54,854 INFO L225 Difference]: With dead ends: 14534 [2022-11-25 18:05:54,854 INFO L226 Difference]: Without dead ends: 9907 [2022-11-25 18:05:54,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 18:05:54,877 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 1125 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 1557 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 2088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 1557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:05:54,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 877 Invalid, 2088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 1557 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-25 18:05:54,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9907 states. [2022-11-25 18:05:56,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9907 to 9724. [2022-11-25 18:05:56,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9724 states, 8127 states have (on average 1.598129691152947) internal successors, (12988), 8134 states have internal predecessors, (12988), 1572 states have call successors, (1572), 20 states have call predecessors, (1572), 24 states have return successors, (1767), 1571 states have call predecessors, (1767), 1571 states have call successors, (1767) [2022-11-25 18:05:56,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9724 states to 9724 states and 16327 transitions. [2022-11-25 18:05:56,372 INFO L78 Accepts]: Start accepts. Automaton has 9724 states and 16327 transitions. Word has length 139 [2022-11-25 18:05:56,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:05:56,373 INFO L495 AbstractCegarLoop]: Abstraction has 9724 states and 16327 transitions. [2022-11-25 18:05:56,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 18:05:56,373 INFO L276 IsEmpty]: Start isEmpty. Operand 9724 states and 16327 transitions. [2022-11-25 18:05:56,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-25 18:05:56,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:05:56,428 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:05:56,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 18:05:56,429 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:05:56,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:56,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1438515912, now seen corresponding path program 1 times [2022-11-25 18:05:56,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:56,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644886147] [2022-11-25 18:05:56,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:56,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:56,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:05:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:56,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:05:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:56,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:05:56,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:56,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:05:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:56,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:05:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:56,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 18:05:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:56,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 18:05:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:56,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-25 18:05:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:56,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-25 18:05:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:56,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-25 18:05:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:56,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-25 18:05:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:56,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-25 18:05:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:56,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-25 18:05:56,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:56,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-25 18:05:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:56,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 18:05:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:56,713 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 18:05:56,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:56,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644886147] [2022-11-25 18:05:56,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644886147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:05:56,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:05:56,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:05:56,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8178820] [2022-11-25 18:05:56,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:05:56,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:05:56,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:56,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:05:56,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:05:56,717 INFO L87 Difference]: Start difference. First operand 9724 states and 16327 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 18:06:01,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:06:01,060 INFO L93 Difference]: Finished difference Result 25243 states and 43163 transitions. [2022-11-25 18:06:01,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:06:01,061 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 140 [2022-11-25 18:06:01,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:06:01,152 INFO L225 Difference]: With dead ends: 25243 [2022-11-25 18:06:01,152 INFO L226 Difference]: Without dead ends: 17220 [2022-11-25 18:06:01,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 18:06:01,188 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 1123 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 2090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:06:01,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 934 Invalid, 2090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 1575 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-25 18:06:01,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17220 states. [2022-11-25 18:06:03,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17220 to 17037. [2022-11-25 18:06:03,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17037 states, 14237 states have (on average 1.5898012221675915) internal successors, (22634), 14244 states have internal predecessors, (22634), 2775 states have call successors, (2775), 20 states have call predecessors, (2775), 24 states have return successors, (3114), 2774 states have call predecessors, (3114), 2774 states have call successors, (3114) [2022-11-25 18:06:03,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17037 states to 17037 states and 28523 transitions. [2022-11-25 18:06:03,842 INFO L78 Accepts]: Start accepts. Automaton has 17037 states and 28523 transitions. Word has length 140 [2022-11-25 18:06:03,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:06:03,843 INFO L495 AbstractCegarLoop]: Abstraction has 17037 states and 28523 transitions. [2022-11-25 18:06:03,843 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 18:06:03,843 INFO L276 IsEmpty]: Start isEmpty. Operand 17037 states and 28523 transitions. [2022-11-25 18:06:03,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-25 18:06:03,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:06:03,897 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:06:03,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 18:06:03,897 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:06:03,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:03,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1518474229, now seen corresponding path program 1 times [2022-11-25 18:06:03,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:03,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969116822] [2022-11-25 18:06:03,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:03,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:03,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:06:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:06:04,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:06:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:06:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:06:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 18:06:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-25 18:06:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-25 18:06:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-25 18:06:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-25 18:06:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-25 18:06:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 18:06:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-25 18:06:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-25 18:06:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-25 18:06:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:04,068 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 18:06:04,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:04,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969116822] [2022-11-25 18:06:04,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969116822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:06:04,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:06:04,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:06:04,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587746897] [2022-11-25 18:06:04,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:06:04,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:06:04,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:04,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:06:04,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:06:04,073 INFO L87 Difference]: Start difference. First operand 17037 states and 28523 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 18:06:10,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:06:10,370 INFO L93 Difference]: Finished difference Result 45219 states and 77176 transitions. [2022-11-25 18:06:10,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:06:10,371 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2022-11-25 18:06:10,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:06:10,563 INFO L225 Difference]: With dead ends: 45219 [2022-11-25 18:06:10,563 INFO L226 Difference]: Without dead ends: 30560 [2022-11-25 18:06:10,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 18:06:10,622 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 1121 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1557 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 2089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 1557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:06:10,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1136 Valid, 872 Invalid, 2089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 1557 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-25 18:06:10,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30560 states. [2022-11-25 18:06:14,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30560 to 30377. [2022-11-25 18:06:14,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30377 states, 25538 states have (on average 1.5857545618294306) internal successors, (40497), 25545 states have internal predecessors, (40497), 4814 states have call successors, (4814), 20 states have call predecessors, (4814), 24 states have return successors, (5427), 4813 states have call predecessors, (5427), 4813 states have call successors, (5427) [2022-11-25 18:06:15,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30377 states to 30377 states and 50738 transitions. [2022-11-25 18:06:15,034 INFO L78 Accepts]: Start accepts. Automaton has 30377 states and 50738 transitions. Word has length 141 [2022-11-25 18:06:15,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:06:15,035 INFO L495 AbstractCegarLoop]: Abstraction has 30377 states and 50738 transitions. [2022-11-25 18:06:15,035 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 18:06:15,035 INFO L276 IsEmpty]: Start isEmpty. Operand 30377 states and 50738 transitions. [2022-11-25 18:06:15,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-25 18:06:15,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:06:15,110 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:06:15,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 18:06:15,111 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:06:15,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:15,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1327471622, now seen corresponding path program 1 times [2022-11-25 18:06:15,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:15,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832526439] [2022-11-25 18:06:15,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:15,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:15,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:06:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:15,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:06:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:15,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:06:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:15,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:06:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:15,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:06:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:15,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 18:06:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:15,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 18:06:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:15,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-25 18:06:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:15,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-25 18:06:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:15,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-25 18:06:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:15,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-25 18:06:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:15,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-25 18:06:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:15,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-25 18:06:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:15,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-25 18:06:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:15,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-25 18:06:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:15,297 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 18:06:15,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:15,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832526439] [2022-11-25 18:06:15,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832526439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:06:15,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:06:15,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:06:15,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568188939] [2022-11-25 18:06:15,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:06:15,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:06:15,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:15,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:06:15,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:06:15,302 INFO L87 Difference]: Start difference. First operand 30377 states and 50738 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 18:06:24,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:06:24,455 INFO L93 Difference]: Finished difference Result 82956 states and 140700 transitions. [2022-11-25 18:06:24,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:06:24,456 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 142 [2022-11-25 18:06:24,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:06:24,812 INFO L225 Difference]: With dead ends: 82956 [2022-11-25 18:06:24,813 INFO L226 Difference]: Without dead ends: 55769 [2022-11-25 18:06:24,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 18:06:24,925 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 1119 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1557 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 2088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 1557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:06:24,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 872 Invalid, 2088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 1557 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-25 18:06:24,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55769 states. [2022-11-25 18:06:32,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55769 to 55586. [2022-11-25 18:06:32,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55586 states, 47032 states have (on average 1.5803708113624766) internal successors, (74328), 47039 states have internal predecessors, (74328), 8529 states have call successors, (8529), 20 states have call predecessors, (8529), 24 states have return successors, (9674), 8528 states have call predecessors, (9674), 8528 states have call successors, (9674) [2022-11-25 18:06:33,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55586 states to 55586 states and 92531 transitions. [2022-11-25 18:06:33,205 INFO L78 Accepts]: Start accepts. Automaton has 55586 states and 92531 transitions. Word has length 142 [2022-11-25 18:06:33,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:06:33,206 INFO L495 AbstractCegarLoop]: Abstraction has 55586 states and 92531 transitions. [2022-11-25 18:06:33,206 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 18:06:33,206 INFO L276 IsEmpty]: Start isEmpty. Operand 55586 states and 92531 transitions. [2022-11-25 18:06:33,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-25 18:06:33,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:06:33,295 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:06:33,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 18:06:33,295 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:06:33,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:33,296 INFO L85 PathProgramCache]: Analyzing trace with hash -862922485, now seen corresponding path program 1 times [2022-11-25 18:06:33,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:33,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809082954] [2022-11-25 18:06:33,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:33,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:33,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:06:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:33,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:06:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:33,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:06:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:33,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:06:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:33,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:06:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:33,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 18:06:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:33,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 18:06:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:33,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-25 18:06:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:33,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 18:06:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:33,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-25 18:06:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:33,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-25 18:06:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:33,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-25 18:06:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:33,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 18:06:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:33,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-25 18:06:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:33,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-25 18:06:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:33,490 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 18:06:33,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:33,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809082954] [2022-11-25 18:06:33,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809082954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:06:33,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:06:33,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:06:33,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44887397] [2022-11-25 18:06:33,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:06:33,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:06:33,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:33,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:06:33,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:06:33,495 INFO L87 Difference]: Start difference. First operand 55586 states and 92531 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15)