./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.11.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f24b464-09e3-4423-a7cd-58bb8b039f7f/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f24b464-09e3-4423-a7cd-58bb8b039f7f/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f24b464-09e3-4423-a7cd-58bb8b039f7f/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f24b464-09e3-4423-a7cd-58bb8b039f7f/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.11.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f24b464-09e3-4423-a7cd-58bb8b039f7f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f24b464-09e3-4423-a7cd-58bb8b039f7f/bin/uautomizer-uyxdKDjOR8 --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 c5f603027c62ff37561a520351662dbe2fd253b52e04e36028cb9a624978ef8e --- 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-2329fc7 [2022-12-13 15:55:22,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:55:22,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:55:22,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:55:22,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:55:22,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:55:22,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:55:22,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:55:22,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:55:22,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:55:22,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:55:22,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:55:22,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:55:22,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:55:22,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:55:22,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:55:22,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:55:22,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:55:22,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:55:22,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:55:22,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:55:22,847 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:55:22,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:55:22,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:55:22,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:55:22,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:55:22,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:55:22,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:55:22,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:55:22,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:55:22,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:55:22,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:55:22,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:55:22,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:55:22,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:55:22,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:55:22,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:55:22,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:55:22,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:55:22,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:55:22,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:55:22,860 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f24b464-09e3-4423-a7cd-58bb8b039f7f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 15:55:22,880 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:55:22,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:55:22,881 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:55:22,881 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:55:22,882 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:55:22,882 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:55:22,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:55:22,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:55:22,883 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:55:22,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:55:22,883 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:55:22,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:55:22,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:55:22,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:55:22,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:55:22,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:55:22,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:55:22,884 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:55:22,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:55:22,884 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:55:22,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:55:22,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:55:22,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:55:22,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:55:22,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:55:22,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:55:22,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:55:22,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:55:22,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:55:22,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:55:22,886 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:55:22,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:55:22,887 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:55:22,887 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:55:22,887 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:55:22,887 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_7f24b464-09e3-4423-a7cd-58bb8b039f7f/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f24b464-09e3-4423-a7cd-58bb8b039f7f/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5f603027c62ff37561a520351662dbe2fd253b52e04e36028cb9a624978ef8e [2022-12-13 15:55:23,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:55:23,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:55:23,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:55:23,099 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:55:23,100 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:55:23,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f24b464-09e3-4423-a7cd-58bb8b039f7f/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/systemc/token_ring.11.cil-2.c [2022-12-13 15:55:25,724 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:55:25,911 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:55:25,912 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f24b464-09e3-4423-a7cd-58bb8b039f7f/sv-benchmarks/c/systemc/token_ring.11.cil-2.c [2022-12-13 15:55:25,920 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f24b464-09e3-4423-a7cd-58bb8b039f7f/bin/uautomizer-uyxdKDjOR8/data/d4b4d7478/5d6bf74c896a48e987dc9684ee7c14c9/FLAGf27afc6e3 [2022-12-13 15:55:25,930 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f24b464-09e3-4423-a7cd-58bb8b039f7f/bin/uautomizer-uyxdKDjOR8/data/d4b4d7478/5d6bf74c896a48e987dc9684ee7c14c9 [2022-12-13 15:55:25,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:55:25,933 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:55:25,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:55:25,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:55:25,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:55:25,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:55:25" (1/1) ... [2022-12-13 15:55:25,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11f40872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:55:25, skipping insertion in model container [2022-12-13 15:55:25,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:55:25" (1/1) ... [2022-12-13 15:55:25,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:55:25,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:55:26,072 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_7f24b464-09e3-4423-a7cd-58bb8b039f7f/sv-benchmarks/c/systemc/token_ring.11.cil-2.c[671,684] [2022-12-13 15:55:26,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:55:26,159 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:55:26,167 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_7f24b464-09e3-4423-a7cd-58bb8b039f7f/sv-benchmarks/c/systemc/token_ring.11.cil-2.c[671,684] [2022-12-13 15:55:26,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:55:26,223 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:55:26,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:55:26 WrapperNode [2022-12-13 15:55:26,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:55:26,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:55:26,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:55:26,225 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:55:26,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:55:26" (1/1) ... [2022-12-13 15:55:26,238 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:55:26" (1/1) ... [2022-12-13 15:55:26,264 INFO L138 Inliner]: procedures = 50, calls = 64, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 795 [2022-12-13 15:55:26,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:55:26,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:55:26,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:55:26,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:55:26,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:55:26" (1/1) ... [2022-12-13 15:55:26,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:55:26" (1/1) ... [2022-12-13 15:55:26,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:55:26" (1/1) ... [2022-12-13 15:55:26,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:55:26" (1/1) ... [2022-12-13 15:55:26,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:55:26" (1/1) ... [2022-12-13 15:55:26,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:55:26" (1/1) ... [2022-12-13 15:55:26,296 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:55:26" (1/1) ... [2022-12-13 15:55:26,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:55:26" (1/1) ... [2022-12-13 15:55:26,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:55:26,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:55:26,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:55:26,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:55:26,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:55:26" (1/1) ... [2022-12-13 15:55:26,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:55:26,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f24b464-09e3-4423-a7cd-58bb8b039f7f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:55:26,327 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f24b464-09e3-4423-a7cd-58bb8b039f7f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:55:26,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f24b464-09e3-4423-a7cd-58bb8b039f7f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:55:26,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:55:26,363 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-12-13 15:55:26,363 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-12-13 15:55:26,363 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-12-13 15:55:26,363 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-12-13 15:55:26,363 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-12-13 15:55:26,363 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-12-13 15:55:26,363 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-12-13 15:55:26,363 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-12-13 15:55:26,363 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-12-13 15:55:26,363 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-12-13 15:55:26,364 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-12-13 15:55:26,364 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-12-13 15:55:26,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:55:26,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:55:26,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:55:26,455 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:55:26,458 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:55:27,036 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:55:27,049 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:55:27,049 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-12-13 15:55:27,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:55:27 BoogieIcfgContainer [2022-12-13 15:55:27,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:55:27,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:55:27,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:55:27,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:55:27,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:55:25" (1/3) ... [2022-12-13 15:55:27,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd50b23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:55:27, skipping insertion in model container [2022-12-13 15:55:27,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:55:26" (2/3) ... [2022-12-13 15:55:27,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd50b23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:55:27, skipping insertion in model container [2022-12-13 15:55:27,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:55:27" (3/3) ... [2022-12-13 15:55:27,060 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.11.cil-2.c [2022-12-13 15:55:27,073 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:55:27,073 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 15:55:27,123 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:55:27,128 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;@4431fae3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:55:27,129 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 15:55:27,133 INFO L276 IsEmpty]: Start isEmpty. Operand has 357 states, 324 states have (on average 1.6604938271604939) internal successors, (538), 326 states have internal predecessors, (538), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-12-13 15:55:27,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-12-13 15:55:27,146 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:55:27,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:55:27,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:55:27,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:55:27,151 INFO L85 PathProgramCache]: Analyzing trace with hash 972283439, now seen corresponding path program 1 times [2022-12-13 15:55:27,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:55:27,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096091872] [2022-12-13 15:55:27,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:55:27,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:55:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:27,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 15:55:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:27,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 15:55:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:27,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 15:55:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:27,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 15:55:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:27,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 15:55:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:27,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:55:27,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:55:27,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096091872] [2022-12-13 15:55:27,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096091872] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:55:27,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:55:27,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:55:27,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912595028] [2022-12-13 15:55:27,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:55:27,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:55:27,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:55:27,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:55:27,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:55:27,645 INFO L87 Difference]: Start difference. First operand has 357 states, 324 states have (on average 1.6604938271604939) internal successors, (538), 326 states have internal predecessors, (538), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:55:29,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:55:29,204 INFO L93 Difference]: Finished difference Result 836 states and 1389 transitions. [2022-12-13 15:55:29,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:55:29,206 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2022-12-13 15:55:29,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:55:29,215 INFO L225 Difference]: With dead ends: 836 [2022-12-13 15:55:29,215 INFO L226 Difference]: Without dead ends: 483 [2022-12-13 15:55:29,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:55:29,221 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 961 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 15:55:29,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 696 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 15:55:29,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-12-13 15:55:29,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 352. [2022-12-13 15:55:29,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 320 states have (on average 1.571875) internal successors, (503), 321 states have internal predecessors, (503), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-12-13 15:55:29,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 553 transitions. [2022-12-13 15:55:29,283 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 553 transitions. Word has length 166 [2022-12-13 15:55:29,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:55:29,284 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 553 transitions. [2022-12-13 15:55:29,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:55:29,284 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 553 transitions. [2022-12-13 15:55:29,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-12-13 15:55:29,286 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:55:29,286 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:55:29,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:55:29,287 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:55:29,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:55:29,287 INFO L85 PathProgramCache]: Analyzing trace with hash 627455277, now seen corresponding path program 1 times [2022-12-13 15:55:29,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:55:29,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174333953] [2022-12-13 15:55:29,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:55:29,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:55:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:29,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 15:55:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:29,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 15:55:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:29,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 15:55:29,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:29,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 15:55:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:29,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 15:55:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:29,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:55:29,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:55:29,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174333953] [2022-12-13 15:55:29,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174333953] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:55:29,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:55:29,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:55:29,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656020978] [2022-12-13 15:55:29,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:55:29,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:55:29,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:55:29,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:55:29,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:55:29,476 INFO L87 Difference]: Start difference. First operand 352 states and 553 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:55:31,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:55:31,047 INFO L93 Difference]: Finished difference Result 819 states and 1305 transitions. [2022-12-13 15:55:31,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:55:31,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2022-12-13 15:55:31,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:55:31,052 INFO L225 Difference]: With dead ends: 819 [2022-12-13 15:55:31,053 INFO L226 Difference]: Without dead ends: 483 [2022-12-13 15:55:31,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:55:31,055 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 948 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 15:55:31,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 682 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 15:55:31,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-12-13 15:55:31,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 352. [2022-12-13 15:55:31,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 320 states have (on average 1.56875) internal successors, (502), 321 states have internal predecessors, (502), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-12-13 15:55:31,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 552 transitions. [2022-12-13 15:55:31,085 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 552 transitions. Word has length 166 [2022-12-13 15:55:31,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:55:31,085 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 552 transitions. [2022-12-13 15:55:31,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:55:31,085 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 552 transitions. [2022-12-13 15:55:31,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-12-13 15:55:31,087 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:55:31,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:55:31,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:55:31,087 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:55:31,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:55:31,088 INFO L85 PathProgramCache]: Analyzing trace with hash 241592875, now seen corresponding path program 1 times [2022-12-13 15:55:31,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:55:31,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949641944] [2022-12-13 15:55:31,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:55:31,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:55:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:31,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 15:55:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:31,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 15:55:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:31,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 15:55:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:31,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 15:55:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:31,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 15:55:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:31,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:55:31,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:55:31,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949641944] [2022-12-13 15:55:31,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949641944] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:55:31,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:55:31,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 15:55:31,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12615107] [2022-12-13 15:55:31,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:55:31,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:55:31,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:55:31,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:55:31,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:55:31,317 INFO L87 Difference]: Start difference. First operand 352 states and 552 transitions. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:55:33,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:55:33,840 INFO L93 Difference]: Finished difference Result 1296 states and 2079 transitions. [2022-12-13 15:55:33,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 15:55:33,841 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2022-12-13 15:55:33,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:55:33,844 INFO L225 Difference]: With dead ends: 1296 [2022-12-13 15:55:33,844 INFO L226 Difference]: Without dead ends: 963 [2022-12-13 15:55:33,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:55:33,846 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 1445 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 2200 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 2304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 15:55:33,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1463 Valid, 1204 Invalid, 2304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2200 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 15:55:33,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-12-13 15:55:33,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 702. [2022-12-13 15:55:33,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 643 states have (on average 1.5816485225505443) internal successors, (1017), 645 states have internal predecessors, (1017), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2022-12-13 15:55:33,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1110 transitions. [2022-12-13 15:55:33,900 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1110 transitions. Word has length 166 [2022-12-13 15:55:33,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:55:33,900 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 1110 transitions. [2022-12-13 15:55:33,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:55:33,901 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1110 transitions. [2022-12-13 15:55:33,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-12-13 15:55:33,902 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:55:33,902 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:55:33,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 15:55:33,902 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:55:33,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:55:33,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1241179055, now seen corresponding path program 1 times [2022-12-13 15:55:33,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:55:33,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640348881] [2022-12-13 15:55:33,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:55:33,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:55:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:33,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 15:55:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:34,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 15:55:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:34,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 15:55:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:34,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 15:55:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:34,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 15:55:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:34,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:55:34,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:55:34,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640348881] [2022-12-13 15:55:34,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640348881] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:55:34,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:55:34,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:55:34,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855600738] [2022-12-13 15:55:34,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:55:34,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:55:34,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:55:34,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:55:34,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:55:34,107 INFO L87 Difference]: Start difference. First operand 702 states and 1110 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:55:37,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:55:37,098 INFO L93 Difference]: Finished difference Result 2144 states and 3444 transitions. [2022-12-13 15:55:37,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:55:37,099 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2022-12-13 15:55:37,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:55:37,103 INFO L225 Difference]: With dead ends: 2144 [2022-12-13 15:55:37,103 INFO L226 Difference]: Without dead ends: 1461 [2022-12-13 15:55:37,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:55:37,106 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 1474 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 3326 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 2255 SdHoareTripleChecker+Invalid, 3387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-13 15:55:37,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 2255 Invalid, 3387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3326 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-13 15:55:37,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2022-12-13 15:55:37,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1027. [2022-12-13 15:55:37,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 941 states have (on average 1.5749202975557917) internal successors, (1482), 944 states have internal predecessors, (1482), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2022-12-13 15:55:37,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1617 transitions. [2022-12-13 15:55:37,196 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1617 transitions. Word has length 166 [2022-12-13 15:55:37,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:55:37,196 INFO L495 AbstractCegarLoop]: Abstraction has 1027 states and 1617 transitions. [2022-12-13 15:55:37,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:55:37,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1617 transitions. [2022-12-13 15:55:37,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-12-13 15:55:37,198 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:55:37,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:55:37,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 15:55:37,198 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:55:37,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:55:37,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1579466605, now seen corresponding path program 1 times [2022-12-13 15:55:37,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:55:37,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563667121] [2022-12-13 15:55:37,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:55:37,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:55:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:37,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 15:55:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:37,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 15:55:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:37,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 15:55:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:37,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 15:55:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:37,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 15:55:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:37,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:55:37,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:55:37,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563667121] [2022-12-13 15:55:37,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563667121] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:55:37,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:55:37,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:55:37,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964757234] [2022-12-13 15:55:37,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:55:37,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:55:37,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:55:37,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:55:37,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:55:37,384 INFO L87 Difference]: Start difference. First operand 1027 states and 1617 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:55:40,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:55:40,620 INFO L93 Difference]: Finished difference Result 3394 states and 5439 transitions. [2022-12-13 15:55:40,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:55:40,620 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2022-12-13 15:55:40,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:55:40,629 INFO L225 Difference]: With dead ends: 3394 [2022-12-13 15:55:40,629 INFO L226 Difference]: Without dead ends: 2386 [2022-12-13 15:55:40,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:55:40,632 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 1472 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 3322 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 3385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-13 15:55:40,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 2253 Invalid, 3385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3322 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-13 15:55:40,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2022-12-13 15:55:40,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 1678. [2022-12-13 15:55:40,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1678 states, 1538 states have (on average 1.568920676202861) internal successors, (2413), 1543 states have internal predecessors, (2413), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2022-12-13 15:55:40,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 2636 transitions. [2022-12-13 15:55:40,830 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 2636 transitions. Word has length 166 [2022-12-13 15:55:40,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:55:40,830 INFO L495 AbstractCegarLoop]: Abstraction has 1678 states and 2636 transitions. [2022-12-13 15:55:40,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:55:40,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 2636 transitions. [2022-12-13 15:55:40,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-12-13 15:55:40,832 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:55:40,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:55:40,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 15:55:40,832 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:55:40,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:55:40,833 INFO L85 PathProgramCache]: Analyzing trace with hash 2006021103, now seen corresponding path program 1 times [2022-12-13 15:55:40,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:55:40,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593730755] [2022-12-13 15:55:40,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:55:40,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:55:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:40,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 15:55:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:40,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 15:55:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:40,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 15:55:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:41,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 15:55:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:41,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 15:55:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:41,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:55:41,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:55:41,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593730755] [2022-12-13 15:55:41,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593730755] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:55:41,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:55:41,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:55:41,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813029626] [2022-12-13 15:55:41,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:55:41,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:55:41,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:55:41,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:55:41,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:55:41,022 INFO L87 Difference]: Start difference. First operand 1678 states and 2636 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:55:44,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:55:44,192 INFO L93 Difference]: Finished difference Result 5797 states and 9250 transitions. [2022-12-13 15:55:44,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:55:44,193 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2022-12-13 15:55:44,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:55:44,202 INFO L225 Difference]: With dead ends: 5797 [2022-12-13 15:55:44,202 INFO L226 Difference]: Without dead ends: 4138 [2022-12-13 15:55:44,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:55:44,206 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 1468 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 3313 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 3376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-13 15:55:44,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 2253 Invalid, 3376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3313 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-13 15:55:44,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4138 states. [2022-12-13 15:55:44,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4138 to 2981. [2022-12-13 15:55:44,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2733 states have (on average 1.5642151481888036) internal successors, (4275), 2742 states have internal predecessors, (4275), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2022-12-13 15:55:44,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 4680 transitions. [2022-12-13 15:55:44,520 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 4680 transitions. Word has length 166 [2022-12-13 15:55:44,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:55:44,521 INFO L495 AbstractCegarLoop]: Abstraction has 2981 states and 4680 transitions. [2022-12-13 15:55:44,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:55:44,521 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 4680 transitions. [2022-12-13 15:55:44,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-12-13 15:55:44,522 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:55:44,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:55:44,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 15:55:44,523 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:55:44,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:55:44,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1465591597, now seen corresponding path program 1 times [2022-12-13 15:55:44,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:55:44,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208632496] [2022-12-13 15:55:44,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:55:44,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:55:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:44,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 15:55:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:44,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 15:55:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:44,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 15:55:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:44,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 15:55:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:44,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 15:55:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:44,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:55:44,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:55:44,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208632496] [2022-12-13 15:55:44,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208632496] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:55:44,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:55:44,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:55:44,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646175722] [2022-12-13 15:55:44,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:55:44,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:55:44,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:55:44,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:55:44,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:55:44,697 INFO L87 Difference]: Start difference. First operand 2981 states and 4680 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:55:48,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:55:48,569 INFO L93 Difference]: Finished difference Result 10602 states and 16888 transitions. [2022-12-13 15:55:48,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:55:48,569 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2022-12-13 15:55:48,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:55:48,596 INFO L225 Difference]: With dead ends: 10602 [2022-12-13 15:55:48,597 INFO L226 Difference]: Without dead ends: 7640 [2022-12-13 15:55:48,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:55:48,606 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 1464 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 3304 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 3367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-13 15:55:48,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 2253 Invalid, 3367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3304 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-13 15:55:48,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7640 states. [2022-12-13 15:55:49,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7640 to 5592. [2022-12-13 15:55:49,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5592 states, 5128 states have (on average 1.56103744149766) internal successors, (8005), 5145 states have internal predecessors, (8005), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2022-12-13 15:55:49,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5592 states to 5592 states and 8792 transitions. [2022-12-13 15:55:49,251 INFO L78 Accepts]: Start accepts. Automaton has 5592 states and 8792 transitions. Word has length 166 [2022-12-13 15:55:49,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:55:49,251 INFO L495 AbstractCegarLoop]: Abstraction has 5592 states and 8792 transitions. [2022-12-13 15:55:49,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:55:49,251 INFO L276 IsEmpty]: Start isEmpty. Operand 5592 states and 8792 transitions. [2022-12-13 15:55:49,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-12-13 15:55:49,253 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:55:49,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:55:49,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 15:55:49,254 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:55:49,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:55:49,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1309611055, now seen corresponding path program 1 times [2022-12-13 15:55:49,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:55:49,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259544207] [2022-12-13 15:55:49,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:55:49,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:55:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:49,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 15:55:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:49,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 15:55:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:49,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 15:55:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:49,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 15:55:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:49,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 15:55:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:49,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:55:49,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:55:49,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259544207] [2022-12-13 15:55:49,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259544207] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:55:49,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:55:49,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:55:49,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317493946] [2022-12-13 15:55:49,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:55:49,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:55:49,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:55:49,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:55:49,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:55:49,405 INFO L87 Difference]: Start difference. First operand 5592 states and 8792 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:55:54,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:55:54,034 INFO L93 Difference]: Finished difference Result 20211 states and 32222 transitions. [2022-12-13 15:55:54,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:55:54,035 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2022-12-13 15:55:54,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:55:54,078 INFO L225 Difference]: With dead ends: 20211 [2022-12-13 15:55:54,078 INFO L226 Difference]: Without dead ends: 14638 [2022-12-13 15:55:54,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:55:54,092 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 1466 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 3290 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 3353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 15:55:54,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 2253 Invalid, 3353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3290 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 15:55:54,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14638 states. [2022-12-13 15:55:55,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14638 to 10827. [2022-12-13 15:55:55,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10827 states, 9931 states have (on average 1.5590574967274191) internal successors, (15483), 9964 states have internal predecessors, (15483), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2022-12-13 15:55:55,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10827 states to 10827 states and 17088 transitions. [2022-12-13 15:55:55,207 INFO L78 Accepts]: Start accepts. Automaton has 10827 states and 17088 transitions. Word has length 166 [2022-12-13 15:55:55,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:55:55,207 INFO L495 AbstractCegarLoop]: Abstraction has 10827 states and 17088 transitions. [2022-12-13 15:55:55,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:55:55,207 INFO L276 IsEmpty]: Start isEmpty. Operand 10827 states and 17088 transitions. [2022-12-13 15:55:55,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-12-13 15:55:55,211 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:55:55,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:55:55,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 15:55:55,212 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:55:55,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:55:55,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1720221421, now seen corresponding path program 1 times [2022-12-13 15:55:55,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:55:55,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452335637] [2022-12-13 15:55:55,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:55:55,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:55:55,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:55,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 15:55:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:55,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 15:55:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:55,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 15:55:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:55,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 15:55:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:55,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 15:55:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:55,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:55:55,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:55:55,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452335637] [2022-12-13 15:55:55,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452335637] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:55:55,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:55:55,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:55:55,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361546144] [2022-12-13 15:55:55,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:55:55,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:55:55,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:55:55,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:55:55,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:55:55,368 INFO L87 Difference]: Start difference. First operand 10827 states and 17088 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:56:01,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:56:01,782 INFO L93 Difference]: Finished difference Result 39397 states and 63020 transitions. [2022-12-13 15:56:01,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:56:01,783 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2022-12-13 15:56:01,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:56:01,863 INFO L225 Difference]: With dead ends: 39397 [2022-12-13 15:56:01,863 INFO L226 Difference]: Without dead ends: 28589 [2022-12-13 15:56:01,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:56:01,913 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 1462 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 3262 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 3325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 15:56:01,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 2253 Invalid, 3325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3262 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 15:56:01,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28589 states. [2022-12-13 15:56:04,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28589 to 21359. [2022-12-13 15:56:04,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21359 states, 19599 states have (on average 1.558599928567784) internal successors, (30547), 19664 states have internal predecessors, (30547), 1305 states have call successors, (1305), 390 states have call predecessors, (1305), 454 states have return successors, (2098), 1368 states have call predecessors, (2098), 1305 states have call successors, (2098) [2022-12-13 15:56:04,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21359 states to 21359 states and 33950 transitions. [2022-12-13 15:56:04,661 INFO L78 Accepts]: Start accepts. Automaton has 21359 states and 33950 transitions. Word has length 166 [2022-12-13 15:56:04,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:56:04,661 INFO L495 AbstractCegarLoop]: Abstraction has 21359 states and 33950 transitions. [2022-12-13 15:56:04,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:56:04,662 INFO L276 IsEmpty]: Start isEmpty. Operand 21359 states and 33950 transitions. [2022-12-13 15:56:04,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-12-13 15:56:04,669 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:56:04,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:56:04,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 15:56:04,669 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:56:04,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:56:04,669 INFO L85 PathProgramCache]: Analyzing trace with hash -415661781, now seen corresponding path program 1 times [2022-12-13 15:56:04,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:56:04,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919091828] [2022-12-13 15:56:04,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:56:04,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:56:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:56:04,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 15:56:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:56:04,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 15:56:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:56:04,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 15:56:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:56:04,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 15:56:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:56:04,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 15:56:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:56:04,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:56:04,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:56:04,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919091828] [2022-12-13 15:56:04,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919091828] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:56:04,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:56:04,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:56:04,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227058660] [2022-12-13 15:56:04,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:56:04,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:56:04,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:56:04,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:56:04,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:56:04,884 INFO L87 Difference]: Start difference. First operand 21359 states and 33950 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:56:16,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:56:16,104 INFO L93 Difference]: Finished difference Result 77835 states and 125344 transitions. [2022-12-13 15:56:16,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:56:16,104 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2022-12-13 15:56:16,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:56:16,239 INFO L225 Difference]: With dead ends: 77835 [2022-12-13 15:56:16,239 INFO L226 Difference]: Without dead ends: 56495 [2022-12-13 15:56:16,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:56:16,280 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 1461 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 3249 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 3312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-13 15:56:16,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 2253 Invalid, 3312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3249 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-13 15:56:16,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56495 states. [2022-12-13 15:56:21,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56495 to 42484. [2022-12-13 15:56:21,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42484 states, 38996 states have (on average 1.5582367422299723) internal successors, (60765), 39125 states have internal predecessors, (60765), 2585 states have call successors, (2585), 774 states have call predecessors, (2585), 902 states have return successors, (4900), 2712 states have call predecessors, (4900), 2585 states have call successors, (4900) [2022-12-13 15:56:21,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42484 states to 42484 states and 68250 transitions. [2022-12-13 15:56:21,513 INFO L78 Accepts]: Start accepts. Automaton has 42484 states and 68250 transitions. Word has length 166 [2022-12-13 15:56:21,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:56:21,513 INFO L495 AbstractCegarLoop]: Abstraction has 42484 states and 68250 transitions. [2022-12-13 15:56:21,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:56:21,514 INFO L276 IsEmpty]: Start isEmpty. Operand 42484 states and 68250 transitions. [2022-12-13 15:56:21,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-12-13 15:56:21,530 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:56:21,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:56:21,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 15:56:21,531 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:56:21,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:56:21,531 INFO L85 PathProgramCache]: Analyzing trace with hash -346013907, now seen corresponding path program 1 times [2022-12-13 15:56:21,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:56:21,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060560672] [2022-12-13 15:56:21,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:56:21,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:56:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:56:21,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 15:56:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:56:21,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 15:56:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:56:21,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 15:56:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:56:21,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 15:56:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:56:21,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 15:56:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:56:21,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:56:21,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:56:21,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060560672] [2022-12-13 15:56:21,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060560672] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:56:21,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:56:21,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:56:21,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296039792] [2022-12-13 15:56:21,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:56:21,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:56:21,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:56:21,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:56:21,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:56:21,721 INFO L87 Difference]: Start difference. First operand 42484 states and 68250 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:56:39,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:56:39,952 INFO L93 Difference]: Finished difference Result 154710 states and 251838 transitions. [2022-12-13 15:56:39,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:56:39,952 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2022-12-13 15:56:39,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:56:40,286 INFO L225 Difference]: With dead ends: 154710 [2022-12-13 15:56:40,286 INFO L226 Difference]: Without dead ends: 112245 [2022-12-13 15:56:40,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:56:40,467 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 1460 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 3236 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 3299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-13 15:56:40,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 2253 Invalid, 3299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3236 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-13 15:56:40,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112245 states. [2022-12-13 15:56:50,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112245 to 84861. [2022-12-13 15:56:50,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84861 states, 77917 states have (on average 1.5579526932505101) internal successors, (121391), 78174 states have internal predecessors, (121391), 5145 states have call successors, (5145), 1542 states have call predecessors, (5145), 1798 states have return successors, (11962), 5400 states have call predecessors, (11962), 5145 states have call successors, (11962) [2022-12-13 15:56:50,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84861 states to 84861 states and 138498 transitions. [2022-12-13 15:56:50,651 INFO L78 Accepts]: Start accepts. Automaton has 84861 states and 138498 transitions. Word has length 166 [2022-12-13 15:56:50,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:56:50,651 INFO L495 AbstractCegarLoop]: Abstraction has 84861 states and 138498 transitions. [2022-12-13 15:56:50,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:56:50,651 INFO L276 IsEmpty]: Start isEmpty. Operand 84861 states and 138498 transitions. [2022-12-13 15:56:50,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-12-13 15:56:50,674 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:56:50,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:56:50,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 15:56:50,675 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:56:50,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:56:50,675 INFO L85 PathProgramCache]: Analyzing trace with hash 71874795, now seen corresponding path program 1 times [2022-12-13 15:56:50,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:56:50,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240620852] [2022-12-13 15:56:50,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:56:50,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:56:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:56:50,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 15:56:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:56:50,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 15:56:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:56:50,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 15:56:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:56:50,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 15:56:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:56:50,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 15:56:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:56:50,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:56:50,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:56:50,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240620852] [2022-12-13 15:56:50,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240620852] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:56:50,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:56:50,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:56:50,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663496298] [2022-12-13 15:56:50,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:56:50,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:56:50,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:56:50,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:56:50,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:56:50,838 INFO L87 Difference]: Start difference. First operand 84861 states and 138498 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:57:26,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:57:26,949 INFO L93 Difference]: Finished difference Result 308461 states and 510468 transitions. [2022-12-13 15:57:26,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:57:26,949 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2022-12-13 15:57:26,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:57:27,693 INFO L225 Difference]: With dead ends: 308461 [2022-12-13 15:57:27,693 INFO L226 Difference]: Without dead ends: 223619 [2022-12-13 15:57:27,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:57:27,941 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 1459 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 3223 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-13 15:57:27,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 2253 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3223 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-13 15:57:28,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223619 states. [2022-12-13 15:57:49,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223619 to 169870. [2022-12-13 15:57:49,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169870 states, 156014 states have (on average 1.5577127693668518) internal successors, (243025), 156527 states have internal predecessors, (243025), 10265 states have call successors, (10265), 3078 states have call predecessors, (10265), 3590 states have return successors, (30460), 10776 states have call predecessors, (30460), 10265 states have call successors, (30460) [2022-12-13 15:57:50,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169870 states to 169870 states and 283750 transitions. [2022-12-13 15:57:50,577 INFO L78 Accepts]: Start accepts. Automaton has 169870 states and 283750 transitions. Word has length 166 [2022-12-13 15:57:50,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:57:50,577 INFO L495 AbstractCegarLoop]: Abstraction has 169870 states and 283750 transitions. [2022-12-13 15:57:50,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:57:50,578 INFO L276 IsEmpty]: Start isEmpty. Operand 169870 states and 283750 transitions. [2022-12-13 15:57:50,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-12-13 15:57:50,626 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:57:50,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:57:50,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 15:57:50,626 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:57:50,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:57:50,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1470828397, now seen corresponding path program 1 times [2022-12-13 15:57:50,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:57:50,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651802401] [2022-12-13 15:57:50,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:57:50,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:57:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:50,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 15:57:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:50,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 15:57:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:50,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 15:57:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:50,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 15:57:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:50,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 15:57:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:50,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:57:50,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:57:50,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651802401] [2022-12-13 15:57:50,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651802401] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:57:50,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:57:50,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:57:50,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719275735] [2022-12-13 15:57:50,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:57:50,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:57:50,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:57:50,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:57:50,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:57:50,801 INFO L87 Difference]: Start difference. First operand 169870 states and 283750 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:58:26,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:58:26,753 INFO L93 Difference]: Finished difference Result 396755 states and 681213 transitions. [2022-12-13 15:58:26,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:58:26,754 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2022-12-13 15:58:26,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:58:27,575 INFO L225 Difference]: With dead ends: 396755 [2022-12-13 15:58:27,575 INFO L226 Difference]: Without dead ends: 226904 [2022-12-13 15:58:27,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:58:27,996 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 1217 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 1487 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 1575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 15:58:27,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1236 Valid, 961 Invalid, 1575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1487 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 15:58:28,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226904 states. [2022-12-13 15:58:49,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226904 to 169870. [2022-12-13 15:58:49,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169870 states, 156014 states have (on average 1.5544246029202506) internal successors, (242512), 156527 states have internal predecessors, (242512), 10265 states have call successors, (10265), 3078 states have call predecessors, (10265), 3590 states have return successors, (30460), 10776 states have call predecessors, (30460), 10265 states have call successors, (30460) [2022-12-13 15:58:50,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169870 states to 169870 states and 283237 transitions. [2022-12-13 15:58:50,046 INFO L78 Accepts]: Start accepts. Automaton has 169870 states and 283237 transitions. Word has length 166 [2022-12-13 15:58:50,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:50,046 INFO L495 AbstractCegarLoop]: Abstraction has 169870 states and 283237 transitions. [2022-12-13 15:58:50,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:58:50,046 INFO L276 IsEmpty]: Start isEmpty. Operand 169870 states and 283237 transitions. [2022-12-13 15:58:50,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-12-13 15:58:50,093 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:50,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:58:50,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 15:58:50,093 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:50,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:50,093 INFO L85 PathProgramCache]: Analyzing trace with hash -146612053, now seen corresponding path program 1 times [2022-12-13 15:58:50,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:50,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274325038] [2022-12-13 15:58:50,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:50,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:50,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 15:58:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:50,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 15:58:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:50,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 15:58:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:50,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 15:58:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:50,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 15:58:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:50,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:58:50,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:50,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274325038] [2022-12-13 15:58:50,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274325038] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:50,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:58:50,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:58:50,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537215710] [2022-12-13 15:58:50,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:50,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:58:50,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:50,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:58:50,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:58:50,257 INFO L87 Difference]: Start difference. First operand 169870 states and 283237 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:00:35,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:00:35,054 INFO L93 Difference]: Finished difference Result 698906 states and 1169252 transitions. [2022-12-13 16:00:35,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 16:00:35,055 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2022-12-13 16:00:35,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:00:37,032 INFO L225 Difference]: With dead ends: 698906 [2022-12-13 16:00:37,032 INFO L226 Difference]: Without dead ends: 529055 [2022-12-13 16:00:37,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 16:00:37,844 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 1898 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 3178 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1928 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 3246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-13 16:00:37,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1928 Valid, 2243 Invalid, 3246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3178 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-13 16:00:38,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529055 states. [2022-12-13 16:01:24,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529055 to 339376. [2022-12-13 16:01:24,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339376 states, 312208 states have (on average 1.5551299133910725) internal successors, (485524), 313233 states have internal predecessors, (485524), 19993 states have call successors, (19993), 6150 states have call predecessors, (19993), 7174 states have return successors, (80066), 21016 states have call predecessors, (80066), 19993 states have call successors, (80066) [2022-12-13 16:01:25,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339376 states to 339376 states and 585583 transitions. [2022-12-13 16:01:25,966 INFO L78 Accepts]: Start accepts. Automaton has 339376 states and 585583 transitions. Word has length 166 [2022-12-13 16:01:25,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:01:25,966 INFO L495 AbstractCegarLoop]: Abstraction has 339376 states and 585583 transitions. [2022-12-13 16:01:25,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:01:25,967 INFO L276 IsEmpty]: Start isEmpty. Operand 339376 states and 585583 transitions. [2022-12-13 16:01:26,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-12-13 16:01:26,138 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:01:26,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:01:26,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 16:01:26,138 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:01:26,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:01:26,139 INFO L85 PathProgramCache]: Analyzing trace with hash 216854445, now seen corresponding path program 1 times [2022-12-13 16:01:26,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:01:26,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142459175] [2022-12-13 16:01:26,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:01:26,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:01:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:26,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 16:01:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:26,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 16:01:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:26,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 16:01:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:26,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 16:01:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:26,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 16:01:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:26,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:01:26,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:01:26,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142459175] [2022-12-13 16:01:26,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142459175] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:01:26,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:01:26,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:01:26,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573587459] [2022-12-13 16:01:26,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:01:26,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:01:26,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:01:26,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:01:26,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:01:26,291 INFO L87 Difference]: Start difference. First operand 339376 states and 585583 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:05:13,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:05:13,264 INFO L93 Difference]: Finished difference Result 1380474 states and 2389052 transitions. [2022-12-13 16:05:13,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 16:05:13,264 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2022-12-13 16:05:13,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:05:18,281 INFO L225 Difference]: With dead ends: 1380474 [2022-12-13 16:05:18,281 INFO L226 Difference]: Without dead ends: 1041117 [2022-12-13 16:05:19,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 16:05:19,938 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 1558 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 3835 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 2239 SdHoareTripleChecker+Invalid, 3900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-13 16:05:19,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 2239 Invalid, 3900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3835 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-13 16:05:20,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041117 states. [2022-12-13 16:07:02,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041117 to 672753. [2022-12-13 16:07:02,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672753 states, 619473 states have (on average 1.5559386769076295) internal successors, (963862), 621522 states have internal predecessors, (963862), 38937 states have call successors, (38937), 12294 states have call predecessors, (38937), 14342 states have return successors, (218132), 40984 states have call predecessors, (218132), 38937 states have call successors, (218132) [2022-12-13 16:07:06,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672753 states to 672753 states and 1220931 transitions. [2022-12-13 16:07:06,709 INFO L78 Accepts]: Start accepts. Automaton has 672753 states and 1220931 transitions. Word has length 166 [2022-12-13 16:07:06,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:07:06,710 INFO L495 AbstractCegarLoop]: Abstraction has 672753 states and 1220931 transitions. [2022-12-13 16:07:06,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:07:06,710 INFO L276 IsEmpty]: Start isEmpty. Operand 672753 states and 1220931 transitions. [2022-12-13 16:07:06,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-12-13 16:07:06,918 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:07:06,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:07:06,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 16:07:06,919 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:07:06,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:07:06,919 INFO L85 PathProgramCache]: Analyzing trace with hash 505673835, now seen corresponding path program 1 times [2022-12-13 16:07:06,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:07:06,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542502153] [2022-12-13 16:07:06,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:07:06,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:07:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:07:06,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 16:07:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:07:07,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 16:07:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:07:07,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 16:07:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:07:07,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 16:07:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:07:07,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 16:07:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:07:07,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:07:07,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:07:07,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542502153] [2022-12-13 16:07:07,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542502153] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:07:07,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:07:07,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:07:07,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178309593] [2022-12-13 16:07:07,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:07:07,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:07:07,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:07:07,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:07:07,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:07:07,179 INFO L87 Difference]: Start difference. First operand 672753 states and 1220931 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)