./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee123207-1cb9-4e2b-ac74-e73bbc38f7d5/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee123207-1cb9-4e2b-ac74-e73bbc38f7d5/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee123207-1cb9-4e2b-ac74-e73bbc38f7d5/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee123207-1cb9-4e2b-ac74-e73bbc38f7d5/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee123207-1cb9-4e2b-ac74-e73bbc38f7d5/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee123207-1cb9-4e2b-ac74-e73bbc38f7d5/bin/uautomizer-QkZJyEgLgS --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 52f505c2033e0aec4a19441e3af9fb9949b71da33ecc0d15d8cd0b9d7a123c92 --- 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-4e7fbc6 [2022-11-23 03:09:39,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:09:39,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:09:39,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:09:39,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:09:39,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:09:39,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:09:39,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:09:39,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:09:39,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:09:39,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:09:39,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:09:39,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:09:39,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:09:39,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:09:39,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:09:39,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:09:39,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:09:39,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:09:39,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:09:39,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:09:39,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:09:39,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:09:39,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:09:39,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:09:39,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:09:39,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:09:39,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:09:39,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:09:39,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:09:39,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:09:39,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:09:39,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:09:39,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:09:39,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:09:39,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:09:39,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:09:39,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:09:39,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:09:39,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:09:39,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:09:39,128 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee123207-1cb9-4e2b-ac74-e73bbc38f7d5/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 03:09:39,157 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:09:39,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:09:39,158 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:09:39,158 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:09:39,159 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:09:39,159 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:09:39,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:09:39,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:09:39,160 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:09:39,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:09:39,160 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:09:39,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:09:39,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:09:39,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:09:39,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:09:39,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:09:39,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:09:39,162 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:09:39,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:09:39,162 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:09:39,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:09:39,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:09:39,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:09:39,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:09:39,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:09:39,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:09:39,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:09:39,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:09:39,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:09:39,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:09:39,164 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:09:39,164 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:09:39,164 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:09:39,165 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:09:39,165 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_ee123207-1cb9-4e2b-ac74-e73bbc38f7d5/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee123207-1cb9-4e2b-ac74-e73bbc38f7d5/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52f505c2033e0aec4a19441e3af9fb9949b71da33ecc0d15d8cd0b9d7a123c92 [2022-11-23 03:09:39,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:09:39,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:09:39,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:09:39,501 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:09:39,502 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:09:39,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee123207-1cb9-4e2b-ac74-e73bbc38f7d5/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-23 03:09:42,602 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:09:42,891 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:09:42,921 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee123207-1cb9-4e2b-ac74-e73bbc38f7d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-23 03:09:42,938 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee123207-1cb9-4e2b-ac74-e73bbc38f7d5/bin/uautomizer-QkZJyEgLgS/data/70cde97ac/bae124fc238a48979d097b0e9a05c124/FLAG8f061ce00 [2022-11-23 03:09:42,953 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee123207-1cb9-4e2b-ac74-e73bbc38f7d5/bin/uautomizer-QkZJyEgLgS/data/70cde97ac/bae124fc238a48979d097b0e9a05c124 [2022-11-23 03:09:42,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:09:42,964 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:09:42,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:09:42,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:09:42,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:09:42,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:09:42" (1/1) ... [2022-11-23 03:09:42,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c3a8f0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:09:42, skipping insertion in model container [2022-11-23 03:09:42,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:09:42" (1/1) ... [2022-11-23 03:09:42,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:09:43,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:09:43,296 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_ee123207-1cb9-4e2b-ac74-e73bbc38f7d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7836,7849] [2022-11-23 03:09:43,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:09:43,382 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:09:43,449 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_ee123207-1cb9-4e2b-ac74-e73bbc38f7d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7836,7849] [2022-11-23 03:09:43,494 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:09:43,530 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:09:43,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:09:43 WrapperNode [2022-11-23 03:09:43,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:09:43,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:09:43,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:09:43,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:09:43,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:09:43" (1/1) ... [2022-11-23 03:09:43,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:09:43" (1/1) ... [2022-11-23 03:09:43,614 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 618 [2022-11-23 03:09:43,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:09:43,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:09:43,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:09:43,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:09:43,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:09:43" (1/1) ... [2022-11-23 03:09:43,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:09:43" (1/1) ... [2022-11-23 03:09:43,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:09:43" (1/1) ... [2022-11-23 03:09:43,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:09:43" (1/1) ... [2022-11-23 03:09:43,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:09:43" (1/1) ... [2022-11-23 03:09:43,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:09:43" (1/1) ... [2022-11-23 03:09:43,669 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:09:43" (1/1) ... [2022-11-23 03:09:43,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:09:43" (1/1) ... [2022-11-23 03:09:43,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:09:43,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:09:43,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:09:43,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:09:43,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:09:43" (1/1) ... [2022-11-23 03:09:43,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:09:43,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee123207-1cb9-4e2b-ac74-e73bbc38f7d5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:09:43,713 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee123207-1cb9-4e2b-ac74-e73bbc38f7d5/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:09:43,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee123207-1cb9-4e2b-ac74-e73bbc38f7d5/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:09:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:09:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:09:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:09:43,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:09:43,922 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:09:43,928 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:09:44,675 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:09:44,683 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:09:44,683 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 03:09:44,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:09:44 BoogieIcfgContainer [2022-11-23 03:09:44,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:09:44,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:09:44,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:09:44,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:09:44,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:09:42" (1/3) ... [2022-11-23 03:09:44,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cdd7f99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:09:44, skipping insertion in model container [2022-11-23 03:09:44,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:09:43" (2/3) ... [2022-11-23 03:09:44,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cdd7f99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:09:44, skipping insertion in model container [2022-11-23 03:09:44,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:09:44" (3/3) ... [2022-11-23 03:09:44,705 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-23 03:09:44,726 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:09:44,727 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 03:09:44,802 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:09:44,812 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;@2437745a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:09:44,812 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 03:09:44,818 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 147 states have (on average 1.7551020408163265) internal successors, (258), 148 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:44,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-23 03:09:44,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:09:44,831 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] [2022-11-23 03:09:44,831 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:09:44,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:09:44,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1577999170, now seen corresponding path program 1 times [2022-11-23 03:09:44,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:09:44,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114077205] [2022-11-23 03:09:44,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:09:44,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:09:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:45,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:09:45,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:09:45,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114077205] [2022-11-23 03:09:45,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114077205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:09:45,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:09:45,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:09:45,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878444386] [2022-11-23 03:09:45,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:09:45,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:09:45,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:09:45,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:09:45,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:09:45,724 INFO L87 Difference]: Start difference. First operand has 149 states, 147 states have (on average 1.7551020408163265) internal successors, (258), 148 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:46,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:09:46,185 INFO L93 Difference]: Finished difference Result 832 states and 1345 transitions. [2022-11-23 03:09:46,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 03:09:46,188 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-11-23 03:09:46,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:09:46,203 INFO L225 Difference]: With dead ends: 832 [2022-11-23 03:09:46,203 INFO L226 Difference]: Without dead ends: 750 [2022-11-23 03:09:46,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-23 03:09:46,210 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 1621 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 03:09:46,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1621 Valid, 1874 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 03:09:46,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-11-23 03:09:46,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 226. [2022-11-23 03:09:46,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 1.4622222222222223) internal successors, (329), 225 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:46,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 329 transitions. [2022-11-23 03:09:46,312 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 329 transitions. Word has length 75 [2022-11-23 03:09:46,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:09:46,314 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 329 transitions. [2022-11-23 03:09:46,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:46,315 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 329 transitions. [2022-11-23 03:09:46,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 03:09:46,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:09:46,321 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] [2022-11-23 03:09:46,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:09:46,322 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:09:46,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:09:46,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1882204162, now seen corresponding path program 1 times [2022-11-23 03:09:46,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:09:46,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705920932] [2022-11-23 03:09:46,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:09:46,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:09:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:46,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:09:46,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:09:46,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705920932] [2022-11-23 03:09:46,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705920932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:09:46,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:09:46,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:09:46,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812699108] [2022-11-23 03:09:46,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:09:46,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:09:46,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:09:46,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:09:46,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:09:46,616 INFO L87 Difference]: Start difference. First operand 226 states and 329 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:46,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:09:46,961 INFO L93 Difference]: Finished difference Result 921 states and 1431 transitions. [2022-11-23 03:09:46,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:09:46,962 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-23 03:09:46,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:09:46,967 INFO L225 Difference]: With dead ends: 921 [2022-11-23 03:09:46,967 INFO L226 Difference]: Without dead ends: 801 [2022-11-23 03:09:46,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-23 03:09:46,978 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 1028 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 03:09:46,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 1248 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 03:09:46,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-11-23 03:09:47,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 355. [2022-11-23 03:09:47,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.5112994350282485) internal successors, (535), 354 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:47,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 535 transitions. [2022-11-23 03:09:47,053 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 535 transitions. Word has length 77 [2022-11-23 03:09:47,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:09:47,053 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 535 transitions. [2022-11-23 03:09:47,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:47,054 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 535 transitions. [2022-11-23 03:09:47,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 03:09:47,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:09:47,056 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] [2022-11-23 03:09:47,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 03:09:47,056 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:09:47,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:09:47,057 INFO L85 PathProgramCache]: Analyzing trace with hash -120044916, now seen corresponding path program 1 times [2022-11-23 03:09:47,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:09:47,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351667338] [2022-11-23 03:09:47,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:09:47,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:09:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:47,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:09:47,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:09:47,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351667338] [2022-11-23 03:09:47,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351667338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:09:47,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:09:47,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:09:47,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057462882] [2022-11-23 03:09:47,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:09:47,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:09:47,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:09:47,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:09:47,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:09:47,313 INFO L87 Difference]: Start difference. First operand 355 states and 535 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:47,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:09:47,592 INFO L93 Difference]: Finished difference Result 1045 states and 1629 transitions. [2022-11-23 03:09:47,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:09:47,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-23 03:09:47,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:09:47,597 INFO L225 Difference]: With dead ends: 1045 [2022-11-23 03:09:47,598 INFO L226 Difference]: Without dead ends: 925 [2022-11-23 03:09:47,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-23 03:09:47,602 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 1295 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:09:47,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1295 Valid, 1056 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:09:47,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2022-11-23 03:09:47,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 538. [2022-11-23 03:09:47,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 1.5400372439478585) internal successors, (827), 537 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:47,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 827 transitions. [2022-11-23 03:09:47,679 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 827 transitions. Word has length 77 [2022-11-23 03:09:47,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:09:47,680 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 827 transitions. [2022-11-23 03:09:47,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:47,680 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 827 transitions. [2022-11-23 03:09:47,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 03:09:47,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:09:47,682 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] [2022-11-23 03:09:47,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 03:09:47,682 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:09:47,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:09:47,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1696566079, now seen corresponding path program 1 times [2022-11-23 03:09:47,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:09:47,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066600323] [2022-11-23 03:09:47,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:09:47,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:09:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:48,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:09:48,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:09:48,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066600323] [2022-11-23 03:09:48,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066600323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:09:48,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:09:48,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:09:48,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488945234] [2022-11-23 03:09:48,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:09:48,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:09:48,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:09:48,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:09:48,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:09:48,034 INFO L87 Difference]: Start difference. First operand 538 states and 827 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:48,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:09:48,339 INFO L93 Difference]: Finished difference Result 955 states and 1491 transitions. [2022-11-23 03:09:48,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:09:48,339 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-23 03:09:48,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:09:48,343 INFO L225 Difference]: With dead ends: 955 [2022-11-23 03:09:48,344 INFO L226 Difference]: Without dead ends: 540 [2022-11-23 03:09:48,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-23 03:09:48,355 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 352 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:09:48,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 808 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:09:48,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-11-23 03:09:48,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 538. [2022-11-23 03:09:48,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 1.5325884543761639) internal successors, (823), 537 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:48,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 823 transitions. [2022-11-23 03:09:48,440 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 823 transitions. Word has length 77 [2022-11-23 03:09:48,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:09:48,442 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 823 transitions. [2022-11-23 03:09:48,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:48,442 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 823 transitions. [2022-11-23 03:09:48,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 03:09:48,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:09:48,443 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] [2022-11-23 03:09:48,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 03:09:48,444 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:09:48,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:09:48,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1904417886, now seen corresponding path program 1 times [2022-11-23 03:09:48,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:09:48,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411252756] [2022-11-23 03:09:48,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:09:48,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:09:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:48,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:09:48,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:09:48,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411252756] [2022-11-23 03:09:48,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411252756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:09:48,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:09:48,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:09:48,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397773191] [2022-11-23 03:09:48,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:09:48,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:09:48,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:09:48,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:09:48,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:09:48,558 INFO L87 Difference]: Start difference. First operand 538 states and 823 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:48,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:09:48,758 INFO L93 Difference]: Finished difference Result 1323 states and 2066 transitions. [2022-11-23 03:09:48,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:09:48,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-23 03:09:48,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:09:48,762 INFO L225 Difference]: With dead ends: 1323 [2022-11-23 03:09:48,763 INFO L226 Difference]: Without dead ends: 908 [2022-11-23 03:09:48,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:09:48,764 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 83 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:09:48,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 467 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:09:48,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2022-11-23 03:09:48,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 892. [2022-11-23 03:09:48,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 891 states have (on average 1.5387205387205387) internal successors, (1371), 891 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:48,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1371 transitions. [2022-11-23 03:09:48,909 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1371 transitions. Word has length 77 [2022-11-23 03:09:48,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:09:48,911 INFO L495 AbstractCegarLoop]: Abstraction has 892 states and 1371 transitions. [2022-11-23 03:09:48,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:48,915 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1371 transitions. [2022-11-23 03:09:48,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 03:09:48,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:09:48,922 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] [2022-11-23 03:09:48,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 03:09:48,922 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:09:48,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:09:48,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1745860562, now seen corresponding path program 1 times [2022-11-23 03:09:48,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:09:48,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227547258] [2022-11-23 03:09:48,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:09:48,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:09:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:49,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:09:49,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:09:49,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227547258] [2022-11-23 03:09:49,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227547258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:09:49,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:09:49,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:09:49,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114519276] [2022-11-23 03:09:49,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:09:49,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:09:49,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:09:49,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:09:49,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:09:49,163 INFO L87 Difference]: Start difference. First operand 892 states and 1371 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:49,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:09:49,640 INFO L93 Difference]: Finished difference Result 2023 states and 3143 transitions. [2022-11-23 03:09:49,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:09:49,641 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-23 03:09:49,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:09:49,647 INFO L225 Difference]: With dead ends: 2023 [2022-11-23 03:09:49,648 INFO L226 Difference]: Without dead ends: 1802 [2022-11-23 03:09:49,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-23 03:09:49,649 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 1037 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:09:49,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 1397 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:09:49,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2022-11-23 03:09:49,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1112. [2022-11-23 03:09:49,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1111 states have (on average 1.5445544554455446) internal successors, (1716), 1111 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:49,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1716 transitions. [2022-11-23 03:09:49,825 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1716 transitions. Word has length 77 [2022-11-23 03:09:49,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:09:49,826 INFO L495 AbstractCegarLoop]: Abstraction has 1112 states and 1716 transitions. [2022-11-23 03:09:49,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:49,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1716 transitions. [2022-11-23 03:09:49,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 03:09:49,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:09:49,827 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] [2022-11-23 03:09:49,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 03:09:49,828 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:09:49,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:09:49,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1856951880, now seen corresponding path program 1 times [2022-11-23 03:09:49,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:09:49,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566496438] [2022-11-23 03:09:49,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:09:49,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:09:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:50,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:09:50,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:09:50,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566496438] [2022-11-23 03:09:50,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566496438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:09:50,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:09:50,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:09:50,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313153664] [2022-11-23 03:09:50,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:09:50,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:09:50,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:09:50,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:09:50,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:09:50,039 INFO L87 Difference]: Start difference. First operand 1112 states and 1716 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:50,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:09:50,579 INFO L93 Difference]: Finished difference Result 2253 states and 3504 transitions. [2022-11-23 03:09:50,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:09:50,580 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-23 03:09:50,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:09:50,587 INFO L225 Difference]: With dead ends: 2253 [2022-11-23 03:09:50,587 INFO L226 Difference]: Without dead ends: 2032 [2022-11-23 03:09:50,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-23 03:09:50,589 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 1080 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:09:50,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 1702 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:09:50,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2022-11-23 03:09:50,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 1347. [2022-11-23 03:09:50,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 1346 states have (on average 1.549034175334324) internal successors, (2085), 1346 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:50,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 2085 transitions. [2022-11-23 03:09:50,843 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 2085 transitions. Word has length 77 [2022-11-23 03:09:50,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:09:50,844 INFO L495 AbstractCegarLoop]: Abstraction has 1347 states and 2085 transitions. [2022-11-23 03:09:50,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:50,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 2085 transitions. [2022-11-23 03:09:50,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 03:09:50,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:09:50,845 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] [2022-11-23 03:09:50,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 03:09:50,846 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:09:50,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:09:50,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1646651862, now seen corresponding path program 1 times [2022-11-23 03:09:50,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:09:50,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322213360] [2022-11-23 03:09:50,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:09:50,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:09:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:51,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:09:51,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:09:51,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322213360] [2022-11-23 03:09:51,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322213360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:09:51,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:09:51,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:09:51,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934304292] [2022-11-23 03:09:51,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:09:51,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:09:51,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:09:51,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:09:51,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:09:51,048 INFO L87 Difference]: Start difference. First operand 1347 states and 2085 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:51,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:09:51,709 INFO L93 Difference]: Finished difference Result 2488 states and 3873 transitions. [2022-11-23 03:09:51,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:09:51,710 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-23 03:09:51,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:09:51,718 INFO L225 Difference]: With dead ends: 2488 [2022-11-23 03:09:51,718 INFO L226 Difference]: Without dead ends: 2267 [2022-11-23 03:09:51,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-23 03:09:51,720 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 1087 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:09:51,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 1265 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:09:51,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2022-11-23 03:09:52,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 1582. [2022-11-23 03:09:52,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1581 states have (on average 1.5521821631878558) internal successors, (2454), 1581 states have internal predecessors, (2454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:52,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2454 transitions. [2022-11-23 03:09:52,095 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2454 transitions. Word has length 77 [2022-11-23 03:09:52,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:09:52,096 INFO L495 AbstractCegarLoop]: Abstraction has 1582 states and 2454 transitions. [2022-11-23 03:09:52,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:52,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2454 transitions. [2022-11-23 03:09:52,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-23 03:09:52,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:09:52,098 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] [2022-11-23 03:09:52,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 03:09:52,100 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:09:52,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:09:52,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1055850175, now seen corresponding path program 1 times [2022-11-23 03:09:52,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:09:52,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908827110] [2022-11-23 03:09:52,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:09:52,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:09:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:52,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:09:52,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:09:52,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908827110] [2022-11-23 03:09:52,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908827110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:09:52,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:09:52,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:09:52,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175848448] [2022-11-23 03:09:52,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:09:52,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:09:52,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:09:52,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:09:52,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:09:52,238 INFO L87 Difference]: Start difference. First operand 1582 states and 2454 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:53,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:09:53,098 INFO L93 Difference]: Finished difference Result 4619 states and 7211 transitions. [2022-11-23 03:09:53,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:09:53,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-11-23 03:09:53,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:09:53,109 INFO L225 Difference]: With dead ends: 4619 [2022-11-23 03:09:53,109 INFO L226 Difference]: Without dead ends: 3074 [2022-11-23 03:09:53,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:09:53,116 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 813 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 03:09:53,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 180 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 03:09:53,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2022-11-23 03:09:53,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 3072. [2022-11-23 03:09:53,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3071 states have (on average 1.552263106479974) internal successors, (4767), 3071 states have internal predecessors, (4767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:53,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 4767 transitions. [2022-11-23 03:09:53,743 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 4767 transitions. Word has length 78 [2022-11-23 03:09:53,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:09:53,743 INFO L495 AbstractCegarLoop]: Abstraction has 3072 states and 4767 transitions. [2022-11-23 03:09:53,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:53,743 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 4767 transitions. [2022-11-23 03:09:53,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-23 03:09:53,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:09:53,745 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] [2022-11-23 03:09:53,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 03:09:53,745 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:09:53,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:09:53,746 INFO L85 PathProgramCache]: Analyzing trace with hash -2025338944, now seen corresponding path program 1 times [2022-11-23 03:09:53,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:09:53,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522650665] [2022-11-23 03:09:53,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:09:53,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:09:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:53,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:09:53,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:09:53,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522650665] [2022-11-23 03:09:53,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522650665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:09:53,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:09:53,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:09:53,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159154377] [2022-11-23 03:09:53,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:09:53,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:09:53,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:09:53,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:09:53,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:09:53,861 INFO L87 Difference]: Start difference. First operand 3072 states and 4767 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:54,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:09:54,600 INFO L93 Difference]: Finished difference Result 6091 states and 9477 transitions. [2022-11-23 03:09:54,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:09:54,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-11-23 03:09:54,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:09:54,614 INFO L225 Difference]: With dead ends: 6091 [2022-11-23 03:09:54,615 INFO L226 Difference]: Without dead ends: 3072 [2022-11-23 03:09:54,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:09:54,619 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 507 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:09:54,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 143 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:09:54,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2022-11-23 03:09:55,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 3072. [2022-11-23 03:09:55,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3071 states have (on average 1.5350048844024748) internal successors, (4714), 3071 states have internal predecessors, (4714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:55,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 4714 transitions. [2022-11-23 03:09:55,218 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 4714 transitions. Word has length 79 [2022-11-23 03:09:55,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:09:55,219 INFO L495 AbstractCegarLoop]: Abstraction has 3072 states and 4714 transitions. [2022-11-23 03:09:55,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:55,219 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 4714 transitions. [2022-11-23 03:09:55,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-23 03:09:55,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:09:55,221 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] [2022-11-23 03:09:55,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 03:09:55,221 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:09:55,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:09:55,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1784244513, now seen corresponding path program 1 times [2022-11-23 03:09:55,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:09:55,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109839658] [2022-11-23 03:09:55,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:09:55,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:09:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:55,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:09:55,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:09:55,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109839658] [2022-11-23 03:09:55,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109839658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:09:55,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:09:55,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:09:55,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013690056] [2022-11-23 03:09:55,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:09:55,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:09:55,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:09:55,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:09:55,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:09:55,339 INFO L87 Difference]: Start difference. First operand 3072 states and 4714 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:56,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:09:56,245 INFO L93 Difference]: Finished difference Result 6095 states and 9376 transitions. [2022-11-23 03:09:56,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:09:56,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-23 03:09:56,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:09:56,256 INFO L225 Difference]: With dead ends: 6095 [2022-11-23 03:09:56,256 INFO L226 Difference]: Without dead ends: 3072 [2022-11-23 03:09:56,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:09:56,260 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 512 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:09:56,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 135 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:09:56,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2022-11-23 03:09:56,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 3072. [2022-11-23 03:09:56,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3071 states have (on average 1.5177466623249756) internal successors, (4661), 3071 states have internal predecessors, (4661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:56,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 4661 transitions. [2022-11-23 03:09:56,838 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 4661 transitions. Word has length 80 [2022-11-23 03:09:56,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:09:56,839 INFO L495 AbstractCegarLoop]: Abstraction has 3072 states and 4661 transitions. [2022-11-23 03:09:56,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:56,839 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 4661 transitions. [2022-11-23 03:09:56,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-23 03:09:56,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:09:56,841 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] [2022-11-23 03:09:56,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 03:09:56,841 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:09:56,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:09:56,842 INFO L85 PathProgramCache]: Analyzing trace with hash -511041836, now seen corresponding path program 1 times [2022-11-23 03:09:56,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:09:56,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966618533] [2022-11-23 03:09:56,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:09:56,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:09:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:56,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:09:56,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:09:56,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966618533] [2022-11-23 03:09:56,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966618533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:09:56,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:09:56,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:09:56,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136501680] [2022-11-23 03:09:56,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:09:56,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:09:56,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:09:56,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:09:56,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:09:56,964 INFO L87 Difference]: Start difference. First operand 3072 states and 4661 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:57,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:09:57,741 INFO L93 Difference]: Finished difference Result 6103 states and 9280 transitions. [2022-11-23 03:09:57,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:09:57,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-11-23 03:09:57,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:09:57,752 INFO L225 Difference]: With dead ends: 6103 [2022-11-23 03:09:57,753 INFO L226 Difference]: Without dead ends: 3072 [2022-11-23 03:09:57,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:09:57,757 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 528 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:09:57,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 119 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:09:57,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2022-11-23 03:09:58,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 3072. [2022-11-23 03:09:58,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3071 states have (on average 1.5004884402474763) internal successors, (4608), 3071 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:58,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 4608 transitions. [2022-11-23 03:09:58,597 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 4608 transitions. Word has length 81 [2022-11-23 03:09:58,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:09:58,598 INFO L495 AbstractCegarLoop]: Abstraction has 3072 states and 4608 transitions. [2022-11-23 03:09:58,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:58,598 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 4608 transitions. [2022-11-23 03:09:58,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-23 03:09:58,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:09:58,600 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] [2022-11-23 03:09:58,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 03:09:58,601 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:09:58,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:09:58,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1919227007, now seen corresponding path program 1 times [2022-11-23 03:09:58,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:09:58,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691662921] [2022-11-23 03:09:58,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:09:58,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:09:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:58,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:09:58,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:09:58,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691662921] [2022-11-23 03:09:58,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691662921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:09:58,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:09:58,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:09:58,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704220130] [2022-11-23 03:09:58,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:09:58,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:09:58,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:09:58,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:09:58,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:09:58,736 INFO L87 Difference]: Start difference. First operand 3072 states and 4608 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:59,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:09:59,537 INFO L93 Difference]: Finished difference Result 6099 states and 9170 transitions. [2022-11-23 03:09:59,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:09:59,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-23 03:09:59,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:09:59,561 INFO L225 Difference]: With dead ends: 6099 [2022-11-23 03:09:59,567 INFO L226 Difference]: Without dead ends: 3072 [2022-11-23 03:09:59,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:09:59,572 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 510 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:09:59,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 127 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:09:59,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2022-11-23 03:10:00,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 3072. [2022-11-23 03:10:00,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3071 states have (on average 1.4832302181699772) internal successors, (4555), 3071 states have internal predecessors, (4555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:10:00,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 4555 transitions. [2022-11-23 03:10:00,096 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 4555 transitions. Word has length 82 [2022-11-23 03:10:00,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:10:00,097 INFO L495 AbstractCegarLoop]: Abstraction has 3072 states and 4555 transitions. [2022-11-23 03:10:00,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:10:00,097 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 4555 transitions. [2022-11-23 03:10:00,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-23 03:10:00,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:10:00,099 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] [2022-11-23 03:10:00,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 03:10:00,099 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:10:00,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:10:00,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1274660632, now seen corresponding path program 1 times [2022-11-23 03:10:00,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:10:00,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032181172] [2022-11-23 03:10:00,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:10:00,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:10:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:10:00,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:10:00,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:10:00,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032181172] [2022-11-23 03:10:00,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032181172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:10:00,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:10:00,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 03:10:00,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466477884] [2022-11-23 03:10:00,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:10:00,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:10:00,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:10:00,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:10:00,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:10:00,349 INFO L87 Difference]: Start difference. First operand 3072 states and 4555 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:10:01,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:10:01,517 INFO L93 Difference]: Finished difference Result 5104 states and 7560 transitions. [2022-11-23 03:10:01,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:10:01,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-11-23 03:10:01,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:10:01,528 INFO L225 Difference]: With dead ends: 5104 [2022-11-23 03:10:01,529 INFO L226 Difference]: Without dead ends: 5102 [2022-11-23 03:10:01,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:10:01,531 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 170 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:10:01,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 777 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:10:01,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2022-11-23 03:10:02,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 3096. [2022-11-23 03:10:02,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3096 states, 3095 states have (on average 1.4749596122778674) internal successors, (4565), 3095 states have internal predecessors, (4565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:10:02,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3096 states to 3096 states and 4565 transitions. [2022-11-23 03:10:02,278 INFO L78 Accepts]: Start accepts. Automaton has 3096 states and 4565 transitions. Word has length 83 [2022-11-23 03:10:02,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:10:02,279 INFO L495 AbstractCegarLoop]: Abstraction has 3096 states and 4565 transitions. [2022-11-23 03:10:02,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:10:02,279 INFO L276 IsEmpty]: Start isEmpty. Operand 3096 states and 4565 transitions. [2022-11-23 03:10:02,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-23 03:10:02,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:10:02,281 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] [2022-11-23 03:10:02,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 03:10:02,281 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:10:02,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:10:02,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1071199524, now seen corresponding path program 1 times [2022-11-23 03:10:02,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:10:02,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501153519] [2022-11-23 03:10:02,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:10:02,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:10:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:10:02,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:10:02,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:10:02,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501153519] [2022-11-23 03:10:02,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501153519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:10:02,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:10:02,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 03:10:02,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124340380] [2022-11-23 03:10:02,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:10:02,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 03:10:02,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:10:02,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 03:10:02,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 03:10:02,718 INFO L87 Difference]: Start difference. First operand 3096 states and 4565 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:10:04,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:10:04,831 INFO L93 Difference]: Finished difference Result 8921 states and 13184 transitions. [2022-11-23 03:10:04,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 03:10:04,832 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-11-23 03:10:04,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:10:04,845 INFO L225 Difference]: With dead ends: 8921 [2022-11-23 03:10:04,845 INFO L226 Difference]: Without dead ends: 5981 [2022-11-23 03:10:04,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-23 03:10:04,850 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 1253 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 03:10:04,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1253 Valid, 433 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 03:10:04,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5981 states. [2022-11-23 03:10:05,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5981 to 3096. [2022-11-23 03:10:05,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3096 states, 3095 states have (on average 1.4746365105008077) internal successors, (4564), 3095 states have internal predecessors, (4564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:10:05,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3096 states to 3096 states and 4564 transitions. [2022-11-23 03:10:05,567 INFO L78 Accepts]: Start accepts. Automaton has 3096 states and 4564 transitions. Word has length 83 [2022-11-23 03:10:05,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:10:05,567 INFO L495 AbstractCegarLoop]: Abstraction has 3096 states and 4564 transitions. [2022-11-23 03:10:05,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:10:05,568 INFO L276 IsEmpty]: Start isEmpty. Operand 3096 states and 4564 transitions. [2022-11-23 03:10:05,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-23 03:10:05,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:10:05,570 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] [2022-11-23 03:10:05,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 03:10:05,570 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:10:05,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:10:05,571 INFO L85 PathProgramCache]: Analyzing trace with hash -49884989, now seen corresponding path program 1 times [2022-11-23 03:10:05,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:10:05,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581308699] [2022-11-23 03:10:05,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:10:05,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:10:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:10:05,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:10:05,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:10:05,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581308699] [2022-11-23 03:10:05,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581308699] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:10:05,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:10:05,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 03:10:05,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773492360] [2022-11-23 03:10:05,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:10:05,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 03:10:05,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:10:05,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 03:10:05,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-23 03:10:05,886 INFO L87 Difference]: Start difference. First operand 3096 states and 4564 transitions. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:10:07,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:10:07,891 INFO L93 Difference]: Finished difference Result 6612 states and 9728 transitions. [2022-11-23 03:10:07,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 03:10:07,891 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-11-23 03:10:07,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:10:07,899 INFO L225 Difference]: With dead ends: 6612 [2022-11-23 03:10:07,899 INFO L226 Difference]: Without dead ends: 3637 [2022-11-23 03:10:07,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-11-23 03:10:07,904 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 1204 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1204 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 03:10:07,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1204 Valid, 435 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 03:10:07,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3637 states. [2022-11-23 03:10:08,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3637 to 3096. [2022-11-23 03:10:08,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3096 states, 3095 states have (on average 1.4736672051696285) internal successors, (4561), 3095 states have internal predecessors, (4561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:10:08,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3096 states to 3096 states and 4561 transitions. [2022-11-23 03:10:08,622 INFO L78 Accepts]: Start accepts. Automaton has 3096 states and 4561 transitions. Word has length 84 [2022-11-23 03:10:08,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:10:08,623 INFO L495 AbstractCegarLoop]: Abstraction has 3096 states and 4561 transitions. [2022-11-23 03:10:08,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:10:08,623 INFO L276 IsEmpty]: Start isEmpty. Operand 3096 states and 4561 transitions. [2022-11-23 03:10:08,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-23 03:10:08,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:10:08,625 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] [2022-11-23 03:10:08,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 03:10:08,625 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:10:08,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:10:08,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1500586117, now seen corresponding path program 1 times [2022-11-23 03:10:08,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:10:08,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637403535] [2022-11-23 03:10:08,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:10:08,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:10:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:10:09,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:10:09,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:10:09,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637403535] [2022-11-23 03:10:09,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637403535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:10:09,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:10:09,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 03:10:09,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988162362] [2022-11-23 03:10:09,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:10:09,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 03:10:09,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:10:09,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 03:10:09,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-23 03:10:09,036 INFO L87 Difference]: Start difference. First operand 3096 states and 4561 transitions. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:10:11,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:10:11,541 INFO L93 Difference]: Finished difference Result 9135 states and 13457 transitions. [2022-11-23 03:10:11,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 03:10:11,542 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-11-23 03:10:11,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:10:11,555 INFO L225 Difference]: With dead ends: 9135 [2022-11-23 03:10:11,555 INFO L226 Difference]: Without dead ends: 6175 [2022-11-23 03:10:11,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-11-23 03:10:11,560 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 1286 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1286 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 03:10:11,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1286 Valid, 548 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 03:10:11,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6175 states. [2022-11-23 03:10:12,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6175 to 3096. [2022-11-23 03:10:12,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3096 states, 3095 states have (on average 1.4717285945072698) internal successors, (4555), 3095 states have internal predecessors, (4555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:10:12,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3096 states to 3096 states and 4555 transitions. [2022-11-23 03:10:12,617 INFO L78 Accepts]: Start accepts. Automaton has 3096 states and 4555 transitions. Word has length 84 [2022-11-23 03:10:12,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:10:12,617 INFO L495 AbstractCegarLoop]: Abstraction has 3096 states and 4555 transitions. [2022-11-23 03:10:12,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:10:12,618 INFO L276 IsEmpty]: Start isEmpty. Operand 3096 states and 4555 transitions. [2022-11-23 03:10:12,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-23 03:10:12,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:10:12,619 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] [2022-11-23 03:10:12,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-23 03:10:12,620 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:10:12,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:10:12,620 INFO L85 PathProgramCache]: Analyzing trace with hash 842057330, now seen corresponding path program 1 times [2022-11-23 03:10:12,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:10:12,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118613005] [2022-11-23 03:10:12,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:10:12,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:10:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:10:13,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:10:13,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:10:13,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118613005] [2022-11-23 03:10:13,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118613005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:10:13,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:10:13,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 03:10:13,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691367234] [2022-11-23 03:10:13,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:10:13,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 03:10:13,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:10:13,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 03:10:13,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-23 03:10:13,030 INFO L87 Difference]: Start difference. First operand 3096 states and 4555 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:10:15,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:10:15,752 INFO L93 Difference]: Finished difference Result 9090 states and 13379 transitions. [2022-11-23 03:10:15,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 03:10:15,753 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-11-23 03:10:15,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:10:15,765 INFO L225 Difference]: With dead ends: 9090 [2022-11-23 03:10:15,765 INFO L226 Difference]: Without dead ends: 6160 [2022-11-23 03:10:15,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2022-11-23 03:10:15,769 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 1424 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1424 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 03:10:15,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1424 Valid, 423 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 03:10:15,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6160 states. [2022-11-23 03:10:16,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6160 to 3096. [2022-11-23 03:10:16,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3096 states, 3095 states have (on average 1.4688206785137319) internal successors, (4546), 3095 states have internal predecessors, (4546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:10:16,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3096 states to 3096 states and 4546 transitions. [2022-11-23 03:10:16,900 INFO L78 Accepts]: Start accepts. Automaton has 3096 states and 4546 transitions. Word has length 85 [2022-11-23 03:10:16,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:10:16,900 INFO L495 AbstractCegarLoop]: Abstraction has 3096 states and 4546 transitions. [2022-11-23 03:10:16,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:10:16,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3096 states and 4546 transitions. [2022-11-23 03:10:16,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-23 03:10:16,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:10:16,902 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:10:16,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-23 03:10:16,902 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:10:16,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:10:16,903 INFO L85 PathProgramCache]: Analyzing trace with hash 2050544046, now seen corresponding path program 1 times [2022-11-23 03:10:16,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:10:16,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085661296] [2022-11-23 03:10:16,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:10:16,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:10:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:10:17,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:10:17,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:10:17,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085661296] [2022-11-23 03:10:17,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085661296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:10:17,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:10:17,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-23 03:10:17,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523892514] [2022-11-23 03:10:17,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:10:17,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 03:10:17,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:10:17,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 03:10:17,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:10:17,677 INFO L87 Difference]: Start difference. First operand 3096 states and 4546 transitions. Second operand has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:10:40,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:10:40,539 INFO L93 Difference]: Finished difference Result 53738 states and 78321 transitions. [2022-11-23 03:10:40,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-23 03:10:40,539 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-23 03:10:40,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:10:40,613 INFO L225 Difference]: With dead ends: 53738 [2022-11-23 03:10:40,613 INFO L226 Difference]: Without dead ends: 50853 [2022-11-23 03:10:40,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=627, Invalid=2025, Unknown=0, NotChecked=0, Total=2652 [2022-11-23 03:10:40,624 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 5710 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5710 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-23 03:10:40,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5710 Valid, 1159 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-23 03:10:40,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50853 states. [2022-11-23 03:10:42,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50853 to 3123. [2022-11-23 03:10:42,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3123 states, 3122 states have (on average 1.4641255605381165) internal successors, (4571), 3122 states have internal predecessors, (4571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:10:42,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 4571 transitions. [2022-11-23 03:10:42,416 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 4571 transitions. Word has length 86 [2022-11-23 03:10:42,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:10:42,417 INFO L495 AbstractCegarLoop]: Abstraction has 3123 states and 4571 transitions. [2022-11-23 03:10:42,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:10:42,417 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 4571 transitions. [2022-11-23 03:10:42,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-23 03:10:42,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:10:42,419 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] [2022-11-23 03:10:42,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-23 03:10:42,419 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:10:42,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:10:42,420 INFO L85 PathProgramCache]: Analyzing trace with hash 420822697, now seen corresponding path program 1 times [2022-11-23 03:10:42,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:10:42,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644384844] [2022-11-23 03:10:42,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:10:42,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:10:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:10:43,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:10:43,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:10:43,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644384844] [2022-11-23 03:10:43,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644384844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:10:43,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:10:43,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 03:10:43,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063122424] [2022-11-23 03:10:43,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:10:43,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 03:10:43,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:10:43,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 03:10:43,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:10:43,291 INFO L87 Difference]: Start difference. First operand 3123 states and 4571 transitions. Second operand has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:10:51,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:10:51,785 INFO L93 Difference]: Finished difference Result 12896 states and 18999 transitions. [2022-11-23 03:10:51,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 03:10:51,786 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-11-23 03:10:51,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:10:51,797 INFO L225 Difference]: With dead ends: 12896 [2022-11-23 03:10:51,797 INFO L226 Difference]: Without dead ends: 11954 [2022-11-23 03:10:51,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-11-23 03:10:51,800 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 1507 mSDsluCounter, 1716 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 2018 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 03:10:51,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 2018 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 03:10:51,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11954 states. [2022-11-23 03:10:53,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11954 to 3087. [2022-11-23 03:10:53,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3087 states, 3086 states have (on average 1.4633830200907323) internal successors, (4516), 3086 states have internal predecessors, (4516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:10:53,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3087 states to 3087 states and 4516 transitions. [2022-11-23 03:10:53,651 INFO L78 Accepts]: Start accepts. Automaton has 3087 states and 4516 transitions. Word has length 87 [2022-11-23 03:10:53,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:10:53,651 INFO L495 AbstractCegarLoop]: Abstraction has 3087 states and 4516 transitions. [2022-11-23 03:10:53,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:10:53,652 INFO L276 IsEmpty]: Start isEmpty. Operand 3087 states and 4516 transitions. [2022-11-23 03:10:53,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-23 03:10:53,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:10:53,653 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] [2022-11-23 03:10:53,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-23 03:10:53,653 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:10:53,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:10:53,654 INFO L85 PathProgramCache]: Analyzing trace with hash -891179609, now seen corresponding path program 1 times [2022-11-23 03:10:53,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:10:53,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008151976] [2022-11-23 03:10:53,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:10:53,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:10:53,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:10:54,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:10:54,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:10:54,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008151976] [2022-11-23 03:10:54,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008151976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:10:54,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:10:54,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-23 03:10:54,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717762974] [2022-11-23 03:10:54,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:10:54,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-23 03:10:54,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:10:54,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-23 03:10:54,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-11-23 03:10:54,893 INFO L87 Difference]: Start difference. First operand 3087 states and 4516 transitions. Second operand has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:03,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:11:03,252 INFO L93 Difference]: Finished difference Result 9426 states and 13874 transitions. [2022-11-23 03:11:03,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-23 03:11:03,252 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-11-23 03:11:03,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:11:03,263 INFO L225 Difference]: With dead ends: 9426 [2022-11-23 03:11:03,264 INFO L226 Difference]: Without dead ends: 8492 [2022-11-23 03:11:03,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=326, Invalid=1156, Unknown=0, NotChecked=0, Total=1482 [2022-11-23 03:11:03,267 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 2016 mSDsluCounter, 4287 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2016 SdHoareTripleChecker+Valid, 4683 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:11:03,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2016 Valid, 4683 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 03:11:03,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8492 states. [2022-11-23 03:11:05,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8492 to 3087. [2022-11-23 03:11:05,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3087 states, 3086 states have (on average 1.4624108878807518) internal successors, (4513), 3086 states have internal predecessors, (4513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:05,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3087 states to 3087 states and 4513 transitions. [2022-11-23 03:11:05,331 INFO L78 Accepts]: Start accepts. Automaton has 3087 states and 4513 transitions. Word has length 87 [2022-11-23 03:11:05,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:11:05,331 INFO L495 AbstractCegarLoop]: Abstraction has 3087 states and 4513 transitions. [2022-11-23 03:11:05,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:05,332 INFO L276 IsEmpty]: Start isEmpty. Operand 3087 states and 4513 transitions. [2022-11-23 03:11:05,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-23 03:11:05,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:11:05,333 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] [2022-11-23 03:11:05,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-23 03:11:05,334 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:11:05,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:11:05,334 INFO L85 PathProgramCache]: Analyzing trace with hash -359518871, now seen corresponding path program 1 times [2022-11-23 03:11:05,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:11:05,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847818455] [2022-11-23 03:11:05,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:11:05,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:11:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:11:08,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:11:08,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:11:08,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847818455] [2022-11-23 03:11:08,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847818455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:11:08,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:11:08,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-11-23 03:11:08,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201772916] [2022-11-23 03:11:08,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:11:08,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-23 03:11:08,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:11:08,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-23 03:11:08,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2022-11-23 03:11:08,188 INFO L87 Difference]: Start difference. First operand 3087 states and 4513 transitions. Second operand has 34 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 34 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:26,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:11:26,261 INFO L93 Difference]: Finished difference Result 13407 states and 19763 transitions. [2022-11-23 03:11:26,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-23 03:11:26,264 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 34 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-11-23 03:11:26,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:11:26,278 INFO L225 Difference]: With dead ends: 13407 [2022-11-23 03:11:26,278 INFO L226 Difference]: Without dead ends: 12962 [2022-11-23 03:11:26,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=651, Invalid=3771, Unknown=0, NotChecked=0, Total=4422 [2022-11-23 03:11:26,285 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 2531 mSDsluCounter, 10798 mSDsCounter, 0 mSdLazyCounter, 6484 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2531 SdHoareTripleChecker+Valid, 11341 SdHoareTripleChecker+Invalid, 6512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 6484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-23 03:11:26,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2531 Valid, 11341 Invalid, 6512 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 6484 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-23 03:11:26,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12962 states. [2022-11-23 03:11:28,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12962 to 3101. [2022-11-23 03:11:28,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3101 states, 3100 states have (on average 1.4616129032258065) internal successors, (4531), 3100 states have internal predecessors, (4531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:28,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3101 states to 3101 states and 4531 transitions. [2022-11-23 03:11:28,510 INFO L78 Accepts]: Start accepts. Automaton has 3101 states and 4531 transitions. Word has length 87 [2022-11-23 03:11:28,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:11:28,510 INFO L495 AbstractCegarLoop]: Abstraction has 3101 states and 4531 transitions. [2022-11-23 03:11:28,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 34 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:28,511 INFO L276 IsEmpty]: Start isEmpty. Operand 3101 states and 4531 transitions. [2022-11-23 03:11:28,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-23 03:11:28,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:11:28,512 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] [2022-11-23 03:11:28,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-23 03:11:28,512 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:11:28,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:11:28,513 INFO L85 PathProgramCache]: Analyzing trace with hash 633451142, now seen corresponding path program 1 times [2022-11-23 03:11:28,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:11:28,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62744929] [2022-11-23 03:11:28,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:11:28,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:11:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:11:29,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:11:29,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:11:29,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62744929] [2022-11-23 03:11:29,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62744929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:11:29,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:11:29,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-23 03:11:29,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530114289] [2022-11-23 03:11:29,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:11:29,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 03:11:29,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:11:29,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 03:11:29,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-23 03:11:29,154 INFO L87 Difference]: Start difference. First operand 3101 states and 4531 transitions. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:39,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:11:39,318 INFO L93 Difference]: Finished difference Result 12623 states and 18619 transitions. [2022-11-23 03:11:39,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 03:11:39,318 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-11-23 03:11:39,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:11:39,329 INFO L225 Difference]: With dead ends: 12623 [2022-11-23 03:11:39,329 INFO L226 Difference]: Without dead ends: 11694 [2022-11-23 03:11:39,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=159, Invalid=393, Unknown=0, NotChecked=0, Total=552 [2022-11-23 03:11:39,333 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 1357 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 03:11:39,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1357 Valid, 1386 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 03:11:39,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11694 states. [2022-11-23 03:11:41,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11694 to 3064. [2022-11-23 03:11:41,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3064 states, 3063 states have (on average 1.4632713026444661) internal successors, (4482), 3063 states have internal predecessors, (4482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:41,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 4482 transitions. [2022-11-23 03:11:41,732 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 4482 transitions. Word has length 87 [2022-11-23 03:11:41,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:11:41,732 INFO L495 AbstractCegarLoop]: Abstraction has 3064 states and 4482 transitions. [2022-11-23 03:11:41,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:41,732 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 4482 transitions. [2022-11-23 03:11:41,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-23 03:11:41,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:11:41,734 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] [2022-11-23 03:11:41,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-23 03:11:41,734 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:11:41,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:11:41,735 INFO L85 PathProgramCache]: Analyzing trace with hash 377130840, now seen corresponding path program 1 times [2022-11-23 03:11:41,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:11:41,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276606208] [2022-11-23 03:11:41,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:11:41,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:11:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:11:42,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:11:42,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:11:42,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276606208] [2022-11-23 03:11:42,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276606208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:11:42,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:11:42,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-23 03:11:42,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139792093] [2022-11-23 03:11:42,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:11:42,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 03:11:42,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:11:42,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 03:11:42,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-23 03:11:42,422 INFO L87 Difference]: Start difference. First operand 3064 states and 4482 transitions. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:12:04,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:12:04,444 INFO L93 Difference]: Finished difference Result 24098 states and 35604 transitions. [2022-11-23 03:12:04,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-23 03:12:04,444 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-11-23 03:12:04,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:12:04,470 INFO L225 Difference]: With dead ends: 24098 [2022-11-23 03:12:04,470 INFO L226 Difference]: Without dead ends: 23208 [2022-11-23 03:12:04,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-11-23 03:12:04,475 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 1998 mSDsluCounter, 2129 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1998 SdHoareTripleChecker+Valid, 2451 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 03:12:04,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1998 Valid, 2451 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 03:12:04,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23208 states. [2022-11-23 03:12:07,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23208 to 3048. [2022-11-23 03:12:07,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3048 states, 3047 states have (on average 1.4617656711519527) internal successors, (4454), 3047 states have internal predecessors, (4454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:12:07,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 4454 transitions. [2022-11-23 03:12:07,377 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 4454 transitions. Word has length 88 [2022-11-23 03:12:07,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:12:07,377 INFO L495 AbstractCegarLoop]: Abstraction has 3048 states and 4454 transitions. [2022-11-23 03:12:07,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:12:07,377 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 4454 transitions. [2022-11-23 03:12:07,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-23 03:12:07,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:12:07,378 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] [2022-11-23 03:12:07,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-23 03:12:07,379 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:12:07,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:12:07,379 INFO L85 PathProgramCache]: Analyzing trace with hash -2099303399, now seen corresponding path program 1 times [2022-11-23 03:12:07,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:12:07,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434598415] [2022-11-23 03:12:07,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:12:07,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:12:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:12:08,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:12:08,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:12:08,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434598415] [2022-11-23 03:12:08,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434598415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:12:08,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:12:08,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 03:12:08,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887378463] [2022-11-23 03:12:08,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:12:08,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 03:12:08,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:12:08,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 03:12:08,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:12:08,072 INFO L87 Difference]: Start difference. First operand 3048 states and 4454 transitions. Second operand has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:12:14,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:12:14,791 INFO L93 Difference]: Finished difference Result 6858 states and 10082 transitions. [2022-11-23 03:12:14,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 03:12:14,791 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-11-23 03:12:14,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:12:14,797 INFO L225 Difference]: With dead ends: 6858 [2022-11-23 03:12:14,797 INFO L226 Difference]: Without dead ends: 5922 [2022-11-23 03:12:14,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2022-11-23 03:12:14,800 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 795 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 03:12:14,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 1597 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 03:12:14,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5922 states. [2022-11-23 03:12:17,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5922 to 2998. [2022-11-23 03:12:17,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2998 states, 2997 states have (on average 1.4654654654654655) internal successors, (4392), 2997 states have internal predecessors, (4392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:12:17,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2998 states to 2998 states and 4392 transitions. [2022-11-23 03:12:17,640 INFO L78 Accepts]: Start accepts. Automaton has 2998 states and 4392 transitions. Word has length 88 [2022-11-23 03:12:17,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:12:17,641 INFO L495 AbstractCegarLoop]: Abstraction has 2998 states and 4392 transitions. [2022-11-23 03:12:17,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:12:17,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2998 states and 4392 transitions. [2022-11-23 03:12:17,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-23 03:12:17,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:12:17,642 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] [2022-11-23 03:12:17,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-23 03:12:17,642 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:12:17,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:12:17,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1915986027, now seen corresponding path program 1 times [2022-11-23 03:12:17,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:12:17,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712887926] [2022-11-23 03:12:17,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:12:17,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:12:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:12:17,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:12:17,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:12:17,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712887926] [2022-11-23 03:12:17,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712887926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:12:17,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:12:17,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:12:17,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760219275] [2022-11-23 03:12:17,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:12:17,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:12:17,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:12:17,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:12:17,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:12:17,821 INFO L87 Difference]: Start difference. First operand 2998 states and 4392 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:12:22,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:12:22,141 INFO L93 Difference]: Finished difference Result 7052 states and 10397 transitions. [2022-11-23 03:12:22,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:12:22,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-11-23 03:12:22,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:12:22,146 INFO L225 Difference]: With dead ends: 7052 [2022-11-23 03:12:22,146 INFO L226 Difference]: Without dead ends: 4178 [2022-11-23 03:12:22,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:12:22,149 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 90 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:12:22,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 436 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:12:22,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4178 states. [2022-11-23 03:12:26,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4178 to 4154. [2022-11-23 03:12:26,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4154 states, 4153 states have (on average 1.4603900794606308) internal successors, (6065), 4153 states have internal predecessors, (6065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:12:26,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4154 states to 4154 states and 6065 transitions. [2022-11-23 03:12:26,047 INFO L78 Accepts]: Start accepts. Automaton has 4154 states and 6065 transitions. Word has length 88 [2022-11-23 03:12:26,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:12:26,047 INFO L495 AbstractCegarLoop]: Abstraction has 4154 states and 6065 transitions. [2022-11-23 03:12:26,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:12:26,047 INFO L276 IsEmpty]: Start isEmpty. Operand 4154 states and 6065 transitions. [2022-11-23 03:12:26,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-23 03:12:26,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:12:26,048 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] [2022-11-23 03:12:26,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-23 03:12:26,049 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:12:26,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:12:26,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1312135, now seen corresponding path program 1 times [2022-11-23 03:12:26,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:12:26,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488142148] [2022-11-23 03:12:26,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:12:26,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:12:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:12:28,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:12:28,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:12:28,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488142148] [2022-11-23 03:12:28,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488142148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:12:28,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:12:28,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-11-23 03:12:28,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379045562] [2022-11-23 03:12:28,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:12:28,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-23 03:12:28,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:12:28,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-23 03:12:28,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=896, Unknown=0, NotChecked=0, Total=992 [2022-11-23 03:12:28,427 INFO L87 Difference]: Start difference. First operand 4154 states and 6065 transitions. Second operand has 32 states, 32 states have (on average 2.75) internal successors, (88), 32 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:12:44,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:12:44,118 INFO L93 Difference]: Finished difference Result 10438 states and 15300 transitions. [2022-11-23 03:12:44,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-23 03:12:44,118 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.75) internal successors, (88), 32 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-11-23 03:12:44,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:12:44,127 INFO L225 Difference]: With dead ends: 10438 [2022-11-23 03:12:44,127 INFO L226 Difference]: Without dead ends: 9341 [2022-11-23 03:12:44,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=575, Invalid=3085, Unknown=0, NotChecked=0, Total=3660 [2022-11-23 03:12:44,130 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 845 mSDsluCounter, 4854 mSDsCounter, 0 mSdLazyCounter, 3341 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 5145 SdHoareTripleChecker+Invalid, 3369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-23 03:12:44,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 5145 Invalid, 3369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3341 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-23 03:12:44,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9341 states. [2022-11-23 03:12:48,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9341 to 4167. [2022-11-23 03:12:48,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4167 states, 4166 states have (on average 1.4596735477676428) internal successors, (6081), 4166 states have internal predecessors, (6081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:12:48,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4167 states to 4167 states and 6081 transitions. [2022-11-23 03:12:48,341 INFO L78 Accepts]: Start accepts. Automaton has 4167 states and 6081 transitions. Word has length 88 [2022-11-23 03:12:48,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:12:48,342 INFO L495 AbstractCegarLoop]: Abstraction has 4167 states and 6081 transitions. [2022-11-23 03:12:48,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.75) internal successors, (88), 32 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:12:48,342 INFO L276 IsEmpty]: Start isEmpty. Operand 4167 states and 6081 transitions. [2022-11-23 03:12:48,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-23 03:12:48,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:12:48,342 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] [2022-11-23 03:12:48,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-23 03:12:48,343 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:12:48,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:12:48,343 INFO L85 PathProgramCache]: Analyzing trace with hash 316975013, now seen corresponding path program 1 times [2022-11-23 03:12:48,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:12:48,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844092438] [2022-11-23 03:12:48,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:12:48,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:12:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:12:49,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:12:49,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:12:49,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844092438] [2022-11-23 03:12:49,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844092438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:12:49,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:12:49,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-23 03:12:49,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28342448] [2022-11-23 03:12:49,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:12:49,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 03:12:49,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:12:49,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 03:12:49,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-23 03:12:49,047 INFO L87 Difference]: Start difference. First operand 4167 states and 6081 transitions. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:13:16,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:13:16,303 INFO L93 Difference]: Finished difference Result 25663 states and 37686 transitions. [2022-11-23 03:13:16,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-23 03:13:16,304 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-11-23 03:13:16,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:13:16,332 INFO L225 Difference]: With dead ends: 25663 [2022-11-23 03:13:16,332 INFO L226 Difference]: Without dead ends: 24341 [2022-11-23 03:13:16,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-11-23 03:13:16,338 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 1423 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 03:13:16,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1423 Valid, 2776 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 03:13:16,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24341 states. [2022-11-23 03:13:20,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24341 to 4142. [2022-11-23 03:13:20,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4142 states, 4141 states have (on average 1.460758270949046) internal successors, (6049), 4141 states have internal predecessors, (6049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:13:20,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4142 states to 4142 states and 6049 transitions. [2022-11-23 03:13:20,995 INFO L78 Accepts]: Start accepts. Automaton has 4142 states and 6049 transitions. Word has length 89 [2022-11-23 03:13:20,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:13:20,996 INFO L495 AbstractCegarLoop]: Abstraction has 4142 states and 6049 transitions. [2022-11-23 03:13:20,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:13:20,996 INFO L276 IsEmpty]: Start isEmpty. Operand 4142 states and 6049 transitions. [2022-11-23 03:13:20,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-23 03:13:20,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:13:20,999 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:13:20,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-23 03:13:20,999 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:13:21,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:13:21,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1743887154, now seen corresponding path program 1 times [2022-11-23 03:13:21,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:13:21,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436095347] [2022-11-23 03:13:21,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:13:21,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:13:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:13:21,121 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:13:21,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:13:21,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436095347] [2022-11-23 03:13:21,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436095347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:13:21,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:13:21,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:13:21,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630191229] [2022-11-23 03:13:21,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:13:21,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:13:21,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:13:21,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:13:21,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:13:21,123 INFO L87 Difference]: Start difference. First operand 4142 states and 6049 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:13:28,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:13:28,143 INFO L93 Difference]: Finished difference Result 8642 states and 12686 transitions. [2022-11-23 03:13:28,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:13:28,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2022-11-23 03:13:28,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:13:28,150 INFO L225 Difference]: With dead ends: 8642 [2022-11-23 03:13:28,150 INFO L226 Difference]: Without dead ends: 5766 [2022-11-23 03:13:28,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:13:28,153 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 83 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:13:28,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 395 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:13:28,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5766 states. [2022-11-23 03:13:34,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5766 to 5548. [2022-11-23 03:13:34,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5548 states, 5547 states have (on average 1.4564629529475392) internal successors, (8079), 5547 states have internal predecessors, (8079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:13:34,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5548 states to 5548 states and 8079 transitions. [2022-11-23 03:13:34,124 INFO L78 Accepts]: Start accepts. Automaton has 5548 states and 8079 transitions. Word has length 116 [2022-11-23 03:13:34,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:13:34,124 INFO L495 AbstractCegarLoop]: Abstraction has 5548 states and 8079 transitions. [2022-11-23 03:13:34,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:13:34,125 INFO L276 IsEmpty]: Start isEmpty. Operand 5548 states and 8079 transitions. [2022-11-23 03:13:34,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-23 03:13:34,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:13:34,126 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:13:34,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-23 03:13:34,127 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:13:34,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:13:34,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1636203635, now seen corresponding path program 1 times [2022-11-23 03:13:34,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:13:34,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192279874] [2022-11-23 03:13:34,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:13:34,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:13:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:13:34,278 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:13:34,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:13:34,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192279874] [2022-11-23 03:13:34,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192279874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:13:34,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:13:34,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 03:13:34,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702246539] [2022-11-23 03:13:34,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:13:34,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:13:34,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:13:34,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:13:34,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:13:34,281 INFO L87 Difference]: Start difference. First operand 5548 states and 8079 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:14:02,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:14:02,833 INFO L93 Difference]: Finished difference Result 29828 states and 43439 transitions. [2022-11-23 03:14:02,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 03:14:02,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2022-11-23 03:14:02,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:14:02,863 INFO L225 Difference]: With dead ends: 29828 [2022-11-23 03:14:02,863 INFO L226 Difference]: Without dead ends: 24408 [2022-11-23 03:14:02,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-23 03:14:02,870 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 1536 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 03:14:02,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 362 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 03:14:02,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24408 states. [2022-11-23 03:14:15,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24408 to 11966. [2022-11-23 03:14:15,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11966 states, 11965 states have (on average 1.4557459256163812) internal successors, (17418), 11965 states have internal predecessors, (17418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:14:15,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11966 states to 11966 states and 17418 transitions. [2022-11-23 03:14:15,932 INFO L78 Accepts]: Start accepts. Automaton has 11966 states and 17418 transitions. Word has length 116 [2022-11-23 03:14:15,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:14:15,932 INFO L495 AbstractCegarLoop]: Abstraction has 11966 states and 17418 transitions. [2022-11-23 03:14:15,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:14:15,932 INFO L276 IsEmpty]: Start isEmpty. Operand 11966 states and 17418 transitions. [2022-11-23 03:14:15,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-23 03:14:15,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:14:15,934 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:14:15,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-23 03:14:15,934 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:14:15,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:14:15,935 INFO L85 PathProgramCache]: Analyzing trace with hash 2144971769, now seen corresponding path program 1 times [2022-11-23 03:14:15,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:14:15,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027024501] [2022-11-23 03:14:15,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:14:15,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:14:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:14:16,084 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:14:16,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:14:16,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027024501] [2022-11-23 03:14:16,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027024501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:14:16,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:14:16,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 03:14:16,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726364302] [2022-11-23 03:14:16,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:14:16,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:14:16,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:14:16,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:14:16,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:14:16,086 INFO L87 Difference]: Start difference. First operand 11966 states and 17418 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:12,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:15:12,537 INFO L93 Difference]: Finished difference Result 60518 states and 87734 transitions. [2022-11-23 03:15:12,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 03:15:12,538 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2022-11-23 03:15:12,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:15:12,605 INFO L225 Difference]: With dead ends: 60518 [2022-11-23 03:15:12,605 INFO L226 Difference]: Without dead ends: 48680 [2022-11-23 03:15:12,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-23 03:15:12,620 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 1369 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 03:15:12,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1369 Valid, 366 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 03:15:12,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48680 states. [2022-11-23 03:15:41,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48680 to 25802. [2022-11-23 03:15:41,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25802 states, 25801 states have (on average 1.4532770047672572) internal successors, (37496), 25801 states have internal predecessors, (37496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:41,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25802 states to 25802 states and 37496 transitions. [2022-11-23 03:15:41,059 INFO L78 Accepts]: Start accepts. Automaton has 25802 states and 37496 transitions. Word has length 116 [2022-11-23 03:15:41,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:15:41,059 INFO L495 AbstractCegarLoop]: Abstraction has 25802 states and 37496 transitions. [2022-11-23 03:15:41,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:41,059 INFO L276 IsEmpty]: Start isEmpty. Operand 25802 states and 37496 transitions. [2022-11-23 03:15:41,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-23 03:15:41,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:15:41,061 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:15:41,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-23 03:15:41,062 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:15:41,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:15:41,062 INFO L85 PathProgramCache]: Analyzing trace with hash 531272813, now seen corresponding path program 1 times [2022-11-23 03:15:41,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:15:41,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670976050] [2022-11-23 03:15:41,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:15:41,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:15:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:15:41,204 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:15:41,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:15:41,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670976050] [2022-11-23 03:15:41,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670976050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:15:41,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:15:41,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 03:15:41,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267949102] [2022-11-23 03:15:41,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:15:41,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:15:41,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:15:41,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:15:41,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:15:41,207 INFO L87 Difference]: Start difference. First operand 25802 states and 37496 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:17:25,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:17:25,156 INFO L93 Difference]: Finished difference Result 120026 states and 174368 transitions. [2022-11-23 03:17:25,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 03:17:25,157 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2022-11-23 03:17:25,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:17:25,310 INFO L225 Difference]: With dead ends: 120026 [2022-11-23 03:17:25,310 INFO L226 Difference]: Without dead ends: 94352 [2022-11-23 03:17:25,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-23 03:17:25,341 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 1711 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 03:17:25,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1711 Valid, 356 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 03:17:25,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94352 states. [2022-11-23 03:18:26,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94352 to 55474. [2022-11-23 03:18:26,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55474 states, 55473 states have (on average 1.4502911326230778) internal successors, (80452), 55473 states have internal predecessors, (80452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:18:26,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55474 states to 55474 states and 80452 transitions. [2022-11-23 03:18:26,325 INFO L78 Accepts]: Start accepts. Automaton has 55474 states and 80452 transitions. Word has length 116 [2022-11-23 03:18:26,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:18:26,325 INFO L495 AbstractCegarLoop]: Abstraction has 55474 states and 80452 transitions. [2022-11-23 03:18:26,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:18:26,325 INFO L276 IsEmpty]: Start isEmpty. Operand 55474 states and 80452 transitions. [2022-11-23 03:18:26,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-23 03:18:26,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:18:26,327 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:18:26,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-23 03:18:26,328 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:18:26,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:18:26,328 INFO L85 PathProgramCache]: Analyzing trace with hash 590869479, now seen corresponding path program 1 times [2022-11-23 03:18:26,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:18:26,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358215916] [2022-11-23 03:18:26,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:18:26,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:18:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:18:26,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:18:26,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:18:26,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358215916] [2022-11-23 03:18:26,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358215916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:18:26,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:18:26,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 03:18:26,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945632408] [2022-11-23 03:18:26,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:18:26,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:18:26,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:18:26,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:18:26,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:18:26,481 INFO L87 Difference]: Start difference. First operand 55474 states and 80452 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:20:20,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:20:20,057 INFO L93 Difference]: Finished difference Result 151888 states and 219753 transitions. [2022-11-23 03:20:20,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 03:20:20,058 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2022-11-23 03:20:20,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:20:20,212 INFO L225 Difference]: With dead ends: 151888 [2022-11-23 03:20:20,212 INFO L226 Difference]: Without dead ends: 96542 [2022-11-23 03:20:20,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-23 03:20:20,260 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 1184 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 03:20:20,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 450 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 03:20:20,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96542 states. [2022-11-23 03:21:29,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96542 to 59236. [2022-11-23 03:21:29,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59236 states, 59235 states have (on average 1.4463914915168397) internal successors, (85677), 59235 states have internal predecessors, (85677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:29,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59236 states to 59236 states and 85677 transitions. [2022-11-23 03:21:29,641 INFO L78 Accepts]: Start accepts. Automaton has 59236 states and 85677 transitions. Word has length 116 [2022-11-23 03:21:29,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:21:29,642 INFO L495 AbstractCegarLoop]: Abstraction has 59236 states and 85677 transitions. [2022-11-23 03:21:29,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:29,642 INFO L276 IsEmpty]: Start isEmpty. Operand 59236 states and 85677 transitions. [2022-11-23 03:21:29,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-23 03:21:29,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:21:29,653 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:21:29,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-23 03:21:29,653 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:21:29,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:21:29,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1143695338, now seen corresponding path program 1 times [2022-11-23 03:21:29,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:21:29,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130665519] [2022-11-23 03:21:29,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:21:29,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:21:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:21:29,794 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 03:21:29,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:21:29,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130665519] [2022-11-23 03:21:29,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130665519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:21:29,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:21:29,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:21:29,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825432403] [2022-11-23 03:21:29,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:21:29,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:21:29,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:21:29,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:21:29,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:21:29,797 INFO L87 Difference]: Start difference. First operand 59236 states and 85677 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:22:38,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:22:38,148 INFO L93 Difference]: Finished difference Result 114104 states and 164759 transitions. [2022-11-23 03:22:38,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:22:38,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-11-23 03:22:38,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:22:38,240 INFO L225 Difference]: With dead ends: 114104 [2022-11-23 03:22:38,241 INFO L226 Difference]: Without dead ends: 55008 [2022-11-23 03:22:38,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:22:38,271 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 79 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:22:38,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 386 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:22:38,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55008 states. [2022-11-23 03:23:43,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55008 to 53746. [2022-11-23 03:23:43,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53746 states, 53745 states have (on average 1.4336589450181412) internal successors, (77052), 53745 states have internal predecessors, (77052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:43,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53746 states to 53746 states and 77052 transitions. [2022-11-23 03:23:43,776 INFO L78 Accepts]: Start accepts. Automaton has 53746 states and 77052 transitions. Word has length 143 [2022-11-23 03:23:43,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:23:43,776 INFO L495 AbstractCegarLoop]: Abstraction has 53746 states and 77052 transitions. [2022-11-23 03:23:43,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:43,777 INFO L276 IsEmpty]: Start isEmpty. Operand 53746 states and 77052 transitions. [2022-11-23 03:23:43,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-23 03:23:43,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:23:43,785 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:23:43,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-23 03:23:43,785 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:23:43,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:23:43,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1248985563, now seen corresponding path program 1 times [2022-11-23 03:23:43,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:23:43,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921456362] [2022-11-23 03:23:43,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:23:43,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:23:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:43,953 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 03:23:43,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:23:43,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921456362] [2022-11-23 03:23:43,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921456362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:23:43,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:23:43,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:23:43,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117665251] [2022-11-23 03:23:43,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:23:43,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:23:43,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:23:43,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:23:43,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:23:43,957 INFO L87 Difference]: Start difference. First operand 53746 states and 77052 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)