./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.12.cil-1.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_a271273b-58ac-4c32-b5b5-575e008f8b07/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a271273b-58ac-4c32-b5b5-575e008f8b07/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_a271273b-58ac-4c32-b5b5-575e008f8b07/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a271273b-58ac-4c32-b5b5-575e008f8b07/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.12.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a271273b-58ac-4c32-b5b5-575e008f8b07/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_a271273b-58ac-4c32-b5b5-575e008f8b07/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 962623ba1d780e7ad35b9b6d7f5839750bc2f361556d46080824a3701cf71595 --- 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 22:15:46,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:15:46,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:15:46,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:15:46,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:15:46,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:15:46,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:15:46,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:15:46,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:15:46,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:15:46,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:15:46,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:15:46,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:15:46,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:15:46,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:15:46,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:15:46,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:15:46,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:15:46,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:15:46,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:15:46,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:15:46,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:15:46,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:15:46,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:15:46,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:15:46,938 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:15:46,938 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:15:46,939 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:15:46,939 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:15:46,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:15:46,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:15:46,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:15:46,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:15:46,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:15:46,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:15:46,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:15:46,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:15:46,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:15:46,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:15:46,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:15:46,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:15:46,945 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a271273b-58ac-4c32-b5b5-575e008f8b07/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 22:15:46,960 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:15:46,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:15:46,960 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:15:46,960 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:15:46,961 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:15:46,961 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:15:46,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:15:46,961 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:15:46,961 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:15:46,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:15:46,962 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 22:15:46,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 22:15:46,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 22:15:46,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:15:46,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 22:15:46,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:15:46,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 22:15:46,962 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 22:15:46,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 22:15:46,963 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:15:46,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 22:15:46,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:15:46,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:15:46,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:15:46,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:15:46,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:15:46,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:15:46,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 22:15:46,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 22:15:46,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 22:15:46,964 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:15:46,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 22:15:46,964 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:15:46,964 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:15:46,964 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:15:46,965 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_a271273b-58ac-4c32-b5b5-575e008f8b07/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a271273b-58ac-4c32-b5b5-575e008f8b07/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 962623ba1d780e7ad35b9b6d7f5839750bc2f361556d46080824a3701cf71595 [2022-12-13 22:15:47,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:15:47,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:15:47,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:15:47,159 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:15:47,159 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:15:47,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a271273b-58ac-4c32-b5b5-575e008f8b07/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/systemc/token_ring.12.cil-1.c [2022-12-13 22:15:49,664 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:15:49,863 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:15:49,863 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a271273b-58ac-4c32-b5b5-575e008f8b07/sv-benchmarks/c/systemc/token_ring.12.cil-1.c [2022-12-13 22:15:49,875 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a271273b-58ac-4c32-b5b5-575e008f8b07/bin/uautomizer-uyxdKDjOR8/data/6a28be32e/42912e3103b34a078aa516d7b62db64f/FLAG6f3f36748 [2022-12-13 22:15:50,235 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a271273b-58ac-4c32-b5b5-575e008f8b07/bin/uautomizer-uyxdKDjOR8/data/6a28be32e/42912e3103b34a078aa516d7b62db64f [2022-12-13 22:15:50,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:15:50,239 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:15:50,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:15:50,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:15:50,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:15:50,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:15:50" (1/1) ... [2022-12-13 22:15:50,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1221949b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:50, skipping insertion in model container [2022-12-13 22:15:50,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:15:50" (1/1) ... [2022-12-13 22:15:50,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:15:50,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:15:50,394 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_a271273b-58ac-4c32-b5b5-575e008f8b07/sv-benchmarks/c/systemc/token_ring.12.cil-1.c[671,684] [2022-12-13 22:15:50,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:15:50,519 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:15:50,529 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_a271273b-58ac-4c32-b5b5-575e008f8b07/sv-benchmarks/c/systemc/token_ring.12.cil-1.c[671,684] [2022-12-13 22:15:50,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:15:50,604 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:15:50,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:50 WrapperNode [2022-12-13 22:15:50,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:15:50,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:15:50,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:15:50,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:15:50,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:50" (1/1) ... [2022-12-13 22:15:50,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:50" (1/1) ... [2022-12-13 22:15:50,645 INFO L138 Inliner]: procedures = 52, calls = 68, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 858 [2022-12-13 22:15:50,645 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:15:50,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:15:50,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:15:50,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:15:50,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:50" (1/1) ... [2022-12-13 22:15:50,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:50" (1/1) ... [2022-12-13 22:15:50,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:50" (1/1) ... [2022-12-13 22:15:50,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:50" (1/1) ... [2022-12-13 22:15:50,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:50" (1/1) ... [2022-12-13 22:15:50,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:50" (1/1) ... [2022-12-13 22:15:50,673 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:50" (1/1) ... [2022-12-13 22:15:50,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:50" (1/1) ... [2022-12-13 22:15:50,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:15:50,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:15:50,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:15:50,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:15:50,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:50" (1/1) ... [2022-12-13 22:15:50,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:15:50,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a271273b-58ac-4c32-b5b5-575e008f8b07/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:15:50,704 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a271273b-58ac-4c32-b5b5-575e008f8b07/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:15:50,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a271273b-58ac-4c32-b5b5-575e008f8b07/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:15:50,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 22:15:50,745 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-12-13 22:15:50,746 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-12-13 22:15:50,746 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-12-13 22:15:50,746 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-12-13 22:15:50,746 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-12-13 22:15:50,746 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-12-13 22:15:50,746 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-12-13 22:15:50,746 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-12-13 22:15:50,746 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-12-13 22:15:50,746 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-12-13 22:15:50,746 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-12-13 22:15:50,746 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-12-13 22:15:50,747 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-12-13 22:15:50,747 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-12-13 22:15:50,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 22:15:50,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:15:50,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:15:50,842 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:15:50,844 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:15:51,390 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:15:51,397 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:15:51,398 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-12-13 22:15:51,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:15:51 BoogieIcfgContainer [2022-12-13 22:15:51,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:15:51,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:15:51,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:15:51,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:15:51,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:15:50" (1/3) ... [2022-12-13 22:15:51,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2425ec03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:15:51, skipping insertion in model container [2022-12-13 22:15:51,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:50" (2/3) ... [2022-12-13 22:15:51,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2425ec03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:15:51, skipping insertion in model container [2022-12-13 22:15:51,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:15:51" (3/3) ... [2022-12-13 22:15:51,406 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.12.cil-1.c [2022-12-13 22:15:51,419 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:15:51,419 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 22:15:51,460 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:15:51,465 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;@35169d5f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:15:51,465 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 22:15:51,469 INFO L276 IsEmpty]: Start isEmpty. Operand has 390 states, 353 states have (on average 1.6685552407932012) internal successors, (589), 357 states have internal predecessors, (589), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-12-13 22:15:51,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-12-13 22:15:51,480 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:15:51,481 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:15:51,481 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:15:51,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:51,485 INFO L85 PathProgramCache]: Analyzing trace with hash 146781689, now seen corresponding path program 1 times [2022-12-13 22:15:51,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:51,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691487354] [2022-12-13 22:15:51,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:51,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:51,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:51,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 22:15:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:51,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 22:15:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:51,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 22:15:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:51,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 22:15:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:51,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-12-13 22:15:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:51,877 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 22:15:51,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:51,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691487354] [2022-12-13 22:15:51,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691487354] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:15:51,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:15:51,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 22:15:51,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130327692] [2022-12-13 22:15:51,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:15:51,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:15:51,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:51,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:15:51,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:15:51,917 INFO L87 Difference]: Start difference. First operand has 390 states, 353 states have (on average 1.6685552407932012) internal successors, (589), 357 states have internal predecessors, (589), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:15:53,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:15:53,800 INFO L93 Difference]: Finished difference Result 910 states and 1518 transitions. [2022-12-13 22:15:53,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 22:15:53,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-12-13 22:15:53,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:15:53,812 INFO L225 Difference]: With dead ends: 910 [2022-12-13 22:15:53,812 INFO L226 Difference]: Without dead ends: 526 [2022-12-13 22:15:53,816 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 22:15:53,819 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 1048 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-13 22:15:53,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 773 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-13 22:15:53,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2022-12-13 22:15:53,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 384. [2022-12-13 22:15:53,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 349 states have (on average 1.5816618911174785) internal successors, (552), 351 states have internal predecessors, (552), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-12-13 22:15:53,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 606 transitions. [2022-12-13 22:15:53,887 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 606 transitions. Word has length 178 [2022-12-13 22:15:53,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:15:53,887 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 606 transitions. [2022-12-13 22:15:53,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:15:53,888 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 606 transitions. [2022-12-13 22:15:53,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-12-13 22:15:53,890 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:15:53,890 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:15:53,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 22:15:53,891 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:15:53,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:53,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1554507639, now seen corresponding path program 1 times [2022-12-13 22:15:53,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:53,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679119509] [2022-12-13 22:15:53,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:53,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:53,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 22:15:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:53,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 22:15:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:54,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 22:15:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:54,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 22:15:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:54,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-12-13 22:15:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:54,043 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 22:15:54,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:54,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679119509] [2022-12-13 22:15:54,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679119509] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:15:54,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:15:54,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 22:15:54,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391786095] [2022-12-13 22:15:54,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:15:54,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:15:54,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:54,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:15:54,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:15:54,046 INFO L87 Difference]: Start difference. First operand 384 states and 606 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:15:55,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:15:55,592 INFO L93 Difference]: Finished difference Result 892 states and 1426 transitions. [2022-12-13 22:15:55,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 22:15:55,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-12-13 22:15:55,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:15:55,596 INFO L225 Difference]: With dead ends: 892 [2022-12-13 22:15:55,596 INFO L226 Difference]: Without dead ends: 526 [2022-12-13 22:15:55,601 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 22:15:55,602 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 1035 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 22:15:55,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 759 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 22:15:55,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2022-12-13 22:15:55,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 384. [2022-12-13 22:15:55,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 349 states have (on average 1.5787965616045845) internal successors, (551), 351 states have internal predecessors, (551), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-12-13 22:15:55,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 605 transitions. [2022-12-13 22:15:55,642 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 605 transitions. Word has length 178 [2022-12-13 22:15:55,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:15:55,642 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 605 transitions. [2022-12-13 22:15:55,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:15:55,643 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 605 transitions. [2022-12-13 22:15:55,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-12-13 22:15:55,646 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:15:55,646 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:15:55,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 22:15:55,646 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:15:55,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:55,647 INFO L85 PathProgramCache]: Analyzing trace with hash 887125749, now seen corresponding path program 1 times [2022-12-13 22:15:55,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:55,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598671855] [2022-12-13 22:15:55,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:55,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:55,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 22:15:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:55,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 22:15:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:55,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 22:15:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:55,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 22:15:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:55,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-12-13 22:15:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:55,890 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 22:15:55,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:55,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598671855] [2022-12-13 22:15:55,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598671855] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:15:55,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:15:55,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 22:15:55,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871641261] [2022-12-13 22:15:55,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:15:55,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 22:15:55,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:55,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 22:15:55,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 22:15:55,892 INFO L87 Difference]: Start difference. First operand 384 states and 605 transitions. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:15:58,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:15:58,479 INFO L93 Difference]: Finished difference Result 1414 states and 2276 transitions. [2022-12-13 22:15:58,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 22:15:58,479 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-12-13 22:15:58,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:15:58,483 INFO L225 Difference]: With dead ends: 1414 [2022-12-13 22:15:58,483 INFO L226 Difference]: Without dead ends: 1050 [2022-12-13 22:15:58,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-12-13 22:15:58,485 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 1576 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 22:15:58,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1595 Valid, 1338 Invalid, 2495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 22:15:58,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2022-12-13 22:15:58,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 765. [2022-12-13 22:15:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 702 states have (on average 1.5911680911680912) internal successors, (1117), 705 states have internal predecessors, (1117), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2022-12-13 22:15:58,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1216 transitions. [2022-12-13 22:15:58,548 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1216 transitions. Word has length 178 [2022-12-13 22:15:58,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:15:58,548 INFO L495 AbstractCegarLoop]: Abstraction has 765 states and 1216 transitions. [2022-12-13 22:15:58,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:15:58,549 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1216 transitions. [2022-12-13 22:15:58,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-12-13 22:15:58,550 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:15:58,550 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:15:58,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 22:15:58,551 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:15:58,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:58,551 INFO L85 PathProgramCache]: Analyzing trace with hash -498614031, now seen corresponding path program 1 times [2022-12-13 22:15:58,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:58,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111398113] [2022-12-13 22:15:58,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:58,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:58,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 22:15:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:58,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 22:15:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:58,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 22:15:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:58,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 22:15:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:58,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-12-13 22:15:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:58,782 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 22:15:58,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:58,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111398113] [2022-12-13 22:15:58,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111398113] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:15:58,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:15:58,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:15:58,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69486353] [2022-12-13 22:15:58,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:15:58,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:15:58,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:58,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:15:58,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:15:58,785 INFO L87 Difference]: Start difference. First operand 765 states and 1216 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:16:01,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:16:01,877 INFO L93 Difference]: Finished difference Result 2337 states and 3770 transitions. [2022-12-13 22:16:01,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 22:16:01,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-12-13 22:16:01,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:16:01,881 INFO L225 Difference]: With dead ends: 2337 [2022-12-13 22:16:01,882 INFO L226 Difference]: Without dead ends: 1592 [2022-12-13 22:16:01,883 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 22:16:01,884 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 1609 mSDsluCounter, 1952 mSDsCounter, 0 mSdLazyCounter, 3597 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1628 SdHoareTripleChecker+Valid, 2524 SdHoareTripleChecker+Invalid, 3664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 22:16:01,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1628 Valid, 2524 Invalid, 3664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3597 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 22:16:01,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2022-12-13 22:16:01,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1119. [2022-12-13 22:16:01,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1028 states have (on average 1.5846303501945525) internal successors, (1629), 1032 states have internal predecessors, (1629), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2022-12-13 22:16:01,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1772 transitions. [2022-12-13 22:16:01,976 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1772 transitions. Word has length 178 [2022-12-13 22:16:01,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:16:01,976 INFO L495 AbstractCegarLoop]: Abstraction has 1119 states and 1772 transitions. [2022-12-13 22:16:01,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:16:01,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1772 transitions. [2022-12-13 22:16:01,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-12-13 22:16:01,978 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:16:01,978 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:16:01,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 22:16:01,978 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:16:01,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:16:01,979 INFO L85 PathProgramCache]: Analyzing trace with hash 2026881651, now seen corresponding path program 1 times [2022-12-13 22:16:01,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:16:01,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12963731] [2022-12-13 22:16:01,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:16:01,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:16:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:02,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 22:16:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:02,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 22:16:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:02,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 22:16:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:02,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 22:16:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:02,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-12-13 22:16:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:02,179 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 22:16:02,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:16:02,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12963731] [2022-12-13 22:16:02,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12963731] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:16:02,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:16:02,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:16:02,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868893741] [2022-12-13 22:16:02,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:16:02,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:16:02,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:16:02,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:16:02,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:16:02,181 INFO L87 Difference]: Start difference. First operand 1119 states and 1772 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:16:05,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:16:05,411 INFO L93 Difference]: Finished difference Result 3698 states and 5954 transitions. [2022-12-13 22:16:05,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 22:16:05,412 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-12-13 22:16:05,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:16:05,421 INFO L225 Difference]: With dead ends: 3698 [2022-12-13 22:16:05,421 INFO L226 Difference]: Without dead ends: 2599 [2022-12-13 22:16:05,424 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 22:16:05,424 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 1723 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 3185 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1742 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 3292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-13 22:16:05,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1742 Valid, 1641 Invalid, 3292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 3185 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-13 22:16:05,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2599 states. [2022-12-13 22:16:05,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2599 to 1828. [2022-12-13 22:16:05,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1828 states, 1681 states have (on average 1.5788221296847116) internal successors, (2654), 1687 states have internal predecessors, (2654), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-12-13 22:16:05,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 2889 transitions. [2022-12-13 22:16:05,613 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 2889 transitions. Word has length 178 [2022-12-13 22:16:05,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:16:05,613 INFO L495 AbstractCegarLoop]: Abstraction has 1828 states and 2889 transitions. [2022-12-13 22:16:05,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:16:05,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 2889 transitions. [2022-12-13 22:16:05,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-12-13 22:16:05,615 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:16:05,615 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:16:05,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 22:16:05,616 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:16:05,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:16:05,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1415612593, now seen corresponding path program 1 times [2022-12-13 22:16:05,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:16:05,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340240006] [2022-12-13 22:16:05,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:16:05,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:16:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:05,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 22:16:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:05,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 22:16:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:05,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 22:16:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:05,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 22:16:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:05,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-12-13 22:16:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:05,811 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 22:16:05,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:16:05,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340240006] [2022-12-13 22:16:05,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340240006] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:16:05,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:16:05,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:16:05,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047990442] [2022-12-13 22:16:05,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:16:05,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:16:05,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:16:05,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:16:05,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:16:05,813 INFO L87 Difference]: Start difference. First operand 1828 states and 2889 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:16:09,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:16:09,333 INFO L93 Difference]: Finished difference Result 6315 states and 10127 transitions. [2022-12-13 22:16:09,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 22:16:09,334 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-12-13 22:16:09,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:16:09,344 INFO L225 Difference]: With dead ends: 6315 [2022-12-13 22:16:09,344 INFO L226 Difference]: Without dead ends: 4507 [2022-12-13 22:16:09,348 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 22:16:09,348 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 1607 mSDsluCounter, 1952 mSDsCounter, 0 mSdLazyCounter, 3586 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1626 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 3655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-13 22:16:09,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1626 Valid, 2522 Invalid, 3655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3586 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-13 22:16:09,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4507 states. [2022-12-13 22:16:09,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4507 to 3247. [2022-12-13 22:16:09,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3247 states, 2988 states have (on average 1.5742971887550201) internal successors, (4704), 2998 states have internal predecessors, (4704), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2022-12-13 22:16:09,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3247 states to 3247 states and 5129 transitions. [2022-12-13 22:16:09,664 INFO L78 Accepts]: Start accepts. Automaton has 3247 states and 5129 transitions. Word has length 178 [2022-12-13 22:16:09,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:16:09,665 INFO L495 AbstractCegarLoop]: Abstraction has 3247 states and 5129 transitions. [2022-12-13 22:16:09,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:16:09,665 INFO L276 IsEmpty]: Start isEmpty. Operand 3247 states and 5129 transitions. [2022-12-13 22:16:09,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-12-13 22:16:09,668 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:16:09,668 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:16:09,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 22:16:09,668 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:16:09,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:16:09,668 INFO L85 PathProgramCache]: Analyzing trace with hash 10420915, now seen corresponding path program 1 times [2022-12-13 22:16:09,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:16:09,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680032071] [2022-12-13 22:16:09,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:16:09,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:16:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:09,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 22:16:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:09,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 22:16:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:09,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 22:16:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:09,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 22:16:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:09,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-12-13 22:16:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:09,870 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 22:16:09,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:16:09,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680032071] [2022-12-13 22:16:09,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680032071] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:16:09,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:16:09,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:16:09,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977930781] [2022-12-13 22:16:09,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:16:09,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:16:09,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:16:09,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:16:09,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:16:09,872 INFO L87 Difference]: Start difference. First operand 3247 states and 5129 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:16:13,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:16:13,950 INFO L93 Difference]: Finished difference Result 11541 states and 18477 transitions. [2022-12-13 22:16:13,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 22:16:13,951 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-12-13 22:16:13,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:16:13,971 INFO L225 Difference]: With dead ends: 11541 [2022-12-13 22:16:13,971 INFO L226 Difference]: Without dead ends: 8314 [2022-12-13 22:16:13,977 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 22:16:13,978 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 1603 mSDsluCounter, 1952 mSDsCounter, 0 mSdLazyCounter, 3558 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 3627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-13 22:16:13,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1622 Valid, 2522 Invalid, 3627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3558 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-13 22:16:13,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8314 states. [2022-12-13 22:16:14,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8314 to 6099. [2022-12-13 22:16:14,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6099 states, 5616 states have (on average 1.5719373219373218) internal successors, (8828), 5634 states have internal predecessors, (8828), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2022-12-13 22:16:14,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6099 states to 6099 states and 9651 transitions. [2022-12-13 22:16:14,636 INFO L78 Accepts]: Start accepts. Automaton has 6099 states and 9651 transitions. Word has length 178 [2022-12-13 22:16:14,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:16:14,637 INFO L495 AbstractCegarLoop]: Abstraction has 6099 states and 9651 transitions. [2022-12-13 22:16:14,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:16:14,637 INFO L276 IsEmpty]: Start isEmpty. Operand 6099 states and 9651 transitions. [2022-12-13 22:16:14,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-12-13 22:16:14,640 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:16:14,640 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:16:14,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 22:16:14,640 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:16:14,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:16:14,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1457001781, now seen corresponding path program 1 times [2022-12-13 22:16:14,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:16:14,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091017221] [2022-12-13 22:16:14,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:16:14,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:16:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:14,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 22:16:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:14,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 22:16:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:14,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 22:16:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:14,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 22:16:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:14,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-12-13 22:16:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:14,813 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 22:16:14,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:16:14,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091017221] [2022-12-13 22:16:14,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091017221] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:16:14,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:16:14,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:16:14,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900633148] [2022-12-13 22:16:14,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:16:14,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:16:14,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:16:14,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:16:14,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:16:14,815 INFO L87 Difference]: Start difference. First operand 6099 states and 9651 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:16:19,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:16:19,811 INFO L93 Difference]: Finished difference Result 22011 states and 35269 transitions. [2022-12-13 22:16:19,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 22:16:19,812 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-12-13 22:16:19,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:16:19,852 INFO L225 Difference]: With dead ends: 22011 [2022-12-13 22:16:19,853 INFO L226 Difference]: Without dead ends: 15932 [2022-12-13 22:16:19,864 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 22:16:19,865 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 1602 mSDsluCounter, 1952 mSDsCounter, 0 mSdLazyCounter, 3545 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 3614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-13 22:16:19,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1621 Valid, 2522 Invalid, 3614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3545 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-13 22:16:19,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15932 states. [2022-12-13 22:16:21,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15932 to 11816. [2022-12-13 22:16:21,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11816 states, 10885 states have (on average 1.5704180064308682) internal successors, (17094), 10919 states have internal predecessors, (17094), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-12-13 22:16:21,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11816 states to 11816 states and 18767 transitions. [2022-12-13 22:16:21,129 INFO L78 Accepts]: Start accepts. Automaton has 11816 states and 18767 transitions. Word has length 178 [2022-12-13 22:16:21,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:16:21,129 INFO L495 AbstractCegarLoop]: Abstraction has 11816 states and 18767 transitions. [2022-12-13 22:16:21,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:16:21,129 INFO L276 IsEmpty]: Start isEmpty. Operand 11816 states and 18767 transitions. [2022-12-13 22:16:21,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-12-13 22:16:21,133 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:16:21,133 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:16:21,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 22:16:21,134 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:16:21,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:16:21,134 INFO L85 PathProgramCache]: Analyzing trace with hash 533834355, now seen corresponding path program 1 times [2022-12-13 22:16:21,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:16:21,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972439127] [2022-12-13 22:16:21,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:16:21,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:16:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:21,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 22:16:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:21,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 22:16:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:21,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 22:16:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:21,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 22:16:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:21,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-12-13 22:16:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:21,321 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 22:16:21,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:16:21,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972439127] [2022-12-13 22:16:21,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972439127] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:16:21,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:16:21,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:16:21,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195677220] [2022-12-13 22:16:21,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:16:21,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:16:21,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:16:21,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:16:21,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:16:21,323 INFO L87 Difference]: Start difference. First operand 11816 states and 18767 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:16:28,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:16:28,304 INFO L93 Difference]: Finished difference Result 42950 states and 69043 transitions. [2022-12-13 22:16:28,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 22:16:28,304 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-12-13 22:16:28,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:16:28,377 INFO L225 Difference]: With dead ends: 42950 [2022-12-13 22:16:28,377 INFO L226 Difference]: Without dead ends: 31154 [2022-12-13 22:16:28,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 22:16:28,402 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 1601 mSDsluCounter, 1952 mSDsCounter, 0 mSdLazyCounter, 3532 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 3601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-13 22:16:28,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1620 Valid, 2522 Invalid, 3601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3532 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-13 22:16:28,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31154 states. [2022-12-13 22:16:30,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31154 to 23281. [2022-12-13 22:16:30,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23281 states, 21454 states have (on average 1.56949752959821) internal successors, (33672), 21520 states have internal predecessors, (33672), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2022-12-13 22:16:31,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23281 states to 23281 states and 37207 transitions. [2022-12-13 22:16:31,025 INFO L78 Accepts]: Start accepts. Automaton has 23281 states and 37207 transitions. Word has length 178 [2022-12-13 22:16:31,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:16:31,025 INFO L495 AbstractCegarLoop]: Abstraction has 23281 states and 37207 transitions. [2022-12-13 22:16:31,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:16:31,025 INFO L276 IsEmpty]: Start isEmpty. Operand 23281 states and 37207 transitions. [2022-12-13 22:16:31,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-12-13 22:16:31,033 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:16:31,033 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:16:31,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 22:16:31,033 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:16:31,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:16:31,033 INFO L85 PathProgramCache]: Analyzing trace with hash 919696757, now seen corresponding path program 1 times [2022-12-13 22:16:31,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:16:31,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801501646] [2022-12-13 22:16:31,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:16:31,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:16:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:31,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 22:16:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:31,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 22:16:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:31,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 22:16:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:31,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 22:16:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:31,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-12-13 22:16:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:31,195 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 22:16:31,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:16:31,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801501646] [2022-12-13 22:16:31,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801501646] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:16:31,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:16:31,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:16:31,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183385381] [2022-12-13 22:16:31,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:16:31,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:16:31,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:16:31,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:16:31,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:16:31,197 INFO L87 Difference]: Start difference. First operand 23281 states and 37207 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:16:42,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:16:42,760 INFO L93 Difference]: Finished difference Result 84829 states and 137193 transitions. [2022-12-13 22:16:42,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 22:16:42,761 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-12-13 22:16:42,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:16:42,905 INFO L225 Difference]: With dead ends: 84829 [2022-12-13 22:16:42,905 INFO L226 Difference]: Without dead ends: 61568 [2022-12-13 22:16:42,952 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 22:16:42,952 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 1600 mSDsluCounter, 1952 mSDsCounter, 0 mSdLazyCounter, 3519 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 3588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-13 22:16:42,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1619 Valid, 2522 Invalid, 3588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3519 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-13 22:16:42,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61568 states. [2022-12-13 22:16:47,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61568 to 46274. [2022-12-13 22:16:47,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46274 states, 42655 states have (on average 1.5689133747509085) internal successors, (66922), 42785 states have internal predecessors, (66922), 2716 states have call successors, (2716), 775 states have call predecessors, (2716), 902 states have return successors, (5029), 2841 states have call predecessors, (5029), 2714 states have call successors, (5029) [2022-12-13 22:16:48,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46274 states to 46274 states and 74667 transitions. [2022-12-13 22:16:48,105 INFO L78 Accepts]: Start accepts. Automaton has 46274 states and 74667 transitions. Word has length 178 [2022-12-13 22:16:48,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:16:48,105 INFO L495 AbstractCegarLoop]: Abstraction has 46274 states and 74667 transitions. [2022-12-13 22:16:48,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:16:48,106 INFO L276 IsEmpty]: Start isEmpty. Operand 46274 states and 74667 transitions. [2022-12-13 22:16:48,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-12-13 22:16:48,118 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:16:48,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:16:48,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 22:16:48,118 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:16:48,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:16:48,119 INFO L85 PathProgramCache]: Analyzing trace with hash 655049267, now seen corresponding path program 1 times [2022-12-13 22:16:48,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:16:48,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331427784] [2022-12-13 22:16:48,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:16:48,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:16:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:48,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 22:16:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:48,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 22:16:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:48,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 22:16:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:48,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 22:16:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:48,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-12-13 22:16:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:48,312 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 22:16:48,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:16:48,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331427784] [2022-12-13 22:16:48,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331427784] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:16:48,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:16:48,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:16:48,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973309651] [2022-12-13 22:16:48,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:16:48,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:16:48,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:16:48,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:16:48,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:16:48,313 INFO L87 Difference]: Start difference. First operand 46274 states and 74667 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:17:08,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:17:08,900 INFO L93 Difference]: Finished difference Result 168588 states and 275343 transitions. [2022-12-13 22:17:08,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 22:17:08,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-12-13 22:17:08,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:17:09,255 INFO L225 Difference]: With dead ends: 168588 [2022-12-13 22:17:09,256 INFO L226 Difference]: Without dead ends: 122334 [2022-12-13 22:17:09,369 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 22:17:09,369 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 1599 mSDsluCounter, 1952 mSDsCounter, 0 mSdLazyCounter, 3506 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1618 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 3575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-13 22:17:09,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1618 Valid, 2522 Invalid, 3575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3506 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-13 22:17:09,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122334 states. [2022-12-13 22:17:19,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122334 to 92387. [2022-12-13 22:17:19,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92387 states, 85184 states have (on average 1.5685105184072126) internal successors, (133612), 85442 states have internal predecessors, (133612), 5404 states have call successors, (5404), 1543 states have call predecessors, (5404), 1798 states have return successors, (12219), 5657 states have call predecessors, (12219), 5402 states have call successors, (12219) [2022-12-13 22:17:20,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92387 states to 92387 states and 151235 transitions. [2022-12-13 22:17:20,093 INFO L78 Accepts]: Start accepts. Automaton has 92387 states and 151235 transitions. Word has length 178 [2022-12-13 22:17:20,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:17:20,094 INFO L495 AbstractCegarLoop]: Abstraction has 92387 states and 151235 transitions. [2022-12-13 22:17:20,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:17:20,094 INFO L276 IsEmpty]: Start isEmpty. Operand 92387 states and 151235 transitions. [2022-12-13 22:17:20,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-12-13 22:17:20,118 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:17:20,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:17:20,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 22:17:20,119 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:17:20,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:17:20,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1708792395, now seen corresponding path program 1 times [2022-12-13 22:17:20,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:17:20,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536660347] [2022-12-13 22:17:20,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:17:20,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:17:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:20,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 22:17:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:20,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 22:17:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:20,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 22:17:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:20,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 22:17:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:20,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-12-13 22:17:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:20,287 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 22:17:20,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:17:20,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536660347] [2022-12-13 22:17:20,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536660347] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:17:20,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:17:20,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:17:20,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419180179] [2022-12-13 22:17:20,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:17:20,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:17:20,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:17:20,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:17:20,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:17:20,289 INFO L87 Difference]: Start difference. First operand 92387 states and 151235 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:18:00,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:18:00,032 INFO L93 Difference]: Finished difference Result 336107 states and 557285 transitions. [2022-12-13 22:18:00,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 22:18:00,033 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-12-13 22:18:00,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:18:00,870 INFO L225 Difference]: With dead ends: 336107 [2022-12-13 22:18:00,870 INFO L226 Difference]: Without dead ends: 243740 [2022-12-13 22:18:01,104 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 22:18:01,105 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 1702 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 3118 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 3225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-13 22:18:01,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1721 Valid, 1641 Invalid, 3225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 3118 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-13 22:18:01,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243740 states. [2022-12-13 22:18:22,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243740 to 184868. [2022-12-13 22:18:22,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184868 states, 170497 states have (on average 1.5682035461034505) internal successors, (267374), 171011 states have internal predecessors, (267374), 10780 states have call successors, (10780), 3079 states have call predecessors, (10780), 3590 states have return successors, (30973), 11289 states have call predecessors, (30973), 10778 states have call successors, (30973) [2022-12-13 22:18:23,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184868 states to 184868 states and 309127 transitions. [2022-12-13 22:18:23,390 INFO L78 Accepts]: Start accepts. Automaton has 184868 states and 309127 transitions. Word has length 178 [2022-12-13 22:18:23,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:18:23,390 INFO L495 AbstractCegarLoop]: Abstraction has 184868 states and 309127 transitions. [2022-12-13 22:18:23,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:18:23,390 INFO L276 IsEmpty]: Start isEmpty. Operand 184868 states and 309127 transitions. [2022-12-13 22:18:23,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-12-13 22:18:23,442 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:18:23,442 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:18:23,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 22:18:23,442 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:18:23,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:18:23,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1262995955, now seen corresponding path program 1 times [2022-12-13 22:18:23,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:18:23,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974437620] [2022-12-13 22:18:23,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:18:23,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:18:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:23,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 22:18:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:23,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 22:18:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:23,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 22:18:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:23,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 22:18:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:23,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-12-13 22:18:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:23,622 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 22:18:23,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:18:23,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974437620] [2022-12-13 22:18:23,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974437620] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:18:23,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:18:23,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:18:23,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713705581] [2022-12-13 22:18:23,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:18:23,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:18:23,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:18:23,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:18:23,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:18:23,623 INFO L87 Difference]: Start difference. First operand 184868 states and 309127 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:19:04,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:19:04,531 INFO L93 Difference]: Finished difference Result 432379 states and 741684 transitions. [2022-12-13 22:19:04,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:19:04,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-12-13 22:19:04,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:19:05,454 INFO L225 Difference]: With dead ends: 432379 [2022-12-13 22:19:05,455 INFO L226 Difference]: Without dead ends: 247531 [2022-12-13 22:19:06,055 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 22:19:06,056 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 1164 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 1837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-13 22:19:06,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 1272 Invalid, 1837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-13 22:19:06,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247531 states. [2022-12-13 22:19:29,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247531 to 184868. [2022-12-13 22:19:30,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184868 states, 170497 states have (on average 1.5651946955078389) internal successors, (266861), 171011 states have internal predecessors, (266861), 10780 states have call successors, (10780), 3079 states have call predecessors, (10780), 3590 states have return successors, (30973), 11289 states have call predecessors, (30973), 10778 states have call successors, (30973) [2022-12-13 22:19:30,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184868 states to 184868 states and 308614 transitions. [2022-12-13 22:19:30,728 INFO L78 Accepts]: Start accepts. Automaton has 184868 states and 308614 transitions. Word has length 178 [2022-12-13 22:19:30,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:19:30,728 INFO L495 AbstractCegarLoop]: Abstraction has 184868 states and 308614 transitions. [2022-12-13 22:19:30,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:19:30,728 INFO L276 IsEmpty]: Start isEmpty. Operand 184868 states and 308614 transitions. [2022-12-13 22:19:30,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-12-13 22:19:30,890 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:19:30,890 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:19:30,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 22:19:30,890 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:19:30,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:19:30,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1134991883, now seen corresponding path program 1 times [2022-12-13 22:19:30,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:19:30,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468507247] [2022-12-13 22:19:30,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:19:30,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:19:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:30,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 22:19:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:30,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 22:19:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:31,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 22:19:31,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:31,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 22:19:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:31,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-12-13 22:19:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:31,051 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 22:19:31,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:19:31,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468507247] [2022-12-13 22:19:31,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468507247] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:19:31,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:19:31,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:19:31,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153646607] [2022-12-13 22:19:31,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:19:31,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:19:31,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:19:31,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:19:31,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:19:31,053 INFO L87 Difference]: Start difference. First operand 184868 states and 308614 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:21:28,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:21:28,405 INFO L93 Difference]: Finished difference Result 760742 states and 1272929 transitions. [2022-12-13 22:21:28,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 22:21:28,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-12-13 22:21:28,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:21:30,495 INFO L225 Difference]: With dead ends: 760742 [2022-12-13 22:21:30,495 INFO L226 Difference]: Without dead ends: 575894 [2022-12-13 22:21:31,381 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 22:21:31,382 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 2078 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 3429 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2110 SdHoareTripleChecker+Valid, 2512 SdHoareTripleChecker+Invalid, 3503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 3429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 22:21:31,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2110 Valid, 2512 Invalid, 3503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 3429 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 22:21:31,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575894 states. [2022-12-13 22:22:22,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575894 to 369831. [2022-12-13 22:22:22,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369831 states, 341636 states have (on average 1.5664479153250828) internal successors, (535155), 342662 states have internal predecessors, (535155), 21020 states have call successors, (21020), 6151 states have call predecessors, (21020), 7174 states have return successors, (81091), 22041 states have call predecessors, (81091), 21018 states have call successors, (81091) [2022-12-13 22:22:24,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369831 states to 369831 states and 637266 transitions. [2022-12-13 22:22:24,650 INFO L78 Accepts]: Start accepts. Automaton has 369831 states and 637266 transitions. Word has length 178 [2022-12-13 22:22:24,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:22:24,651 INFO L495 AbstractCegarLoop]: Abstraction has 369831 states and 637266 transitions. [2022-12-13 22:22:24,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:22:24,651 INFO L276 IsEmpty]: Start isEmpty. Operand 369831 states and 637266 transitions. [2022-12-13 22:22:24,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-12-13 22:22:24,832 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:22:24,832 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:22:24,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 22:22:24,833 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:22:24,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:22:24,833 INFO L85 PathProgramCache]: Analyzing trace with hash -708437385, now seen corresponding path program 1 times [2022-12-13 22:22:24,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:22:24,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498757422] [2022-12-13 22:22:24,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:22:24,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:22:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:22:24,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 22:22:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:22:24,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 22:22:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:22:24,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 22:22:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:22:24,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 22:22:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:22:24,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-12-13 22:22:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:22:24,960 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 22:22:24,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:22:24,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498757422] [2022-12-13 22:22:24,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498757422] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:22:24,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:22:24,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:22:24,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373324293] [2022-12-13 22:22:24,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:22:24,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:22:24,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:22:24,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:22:24,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:22:24,961 INFO L87 Difference]: Start difference. First operand 369831 states and 637266 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:26:31,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:26:31,757 INFO L93 Difference]: Finished difference Result 1504551 states and 2597243 transitions. [2022-12-13 22:26:31,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 22:26:31,757 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-12-13 22:26:31,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:26:37,081 INFO L225 Difference]: With dead ends: 1504551 [2022-12-13 22:26:37,081 INFO L226 Difference]: Without dead ends: 1134740 [2022-12-13 22:26:38,987 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 22:26:38,987 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 1703 mSDsluCounter, 1941 mSDsCounter, 0 mSdLazyCounter, 4152 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 2508 SdHoareTripleChecker+Invalid, 4223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 4152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-13 22:26:38,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1721 Valid, 2508 Invalid, 4223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 4152 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-13 22:26:39,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134740 states.